PickShade color tools

by pickshade.com · remote · no sign-in to list tools · v0.2.0 · published by com.pickshade

18 color tools: OKLCH, WCAG and APCA contrast fixes, palettes, gradients, color blindness, tokens.

Changes · 10

Compare Registry entry

18 tools: 10 change things and 8 only read.

Scanned Oct 21, 2026

Deletes or cancels0Claude Code: deny
Can't be undone0Claude Code: ask
Changes things10Claude Code: ask: see these tools
Only reads8Claude Code: allow: see these tools

3 checks matched something in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http pickshade https://pickshade.com/api/mcp

Findings

Matches of fixed checks, with the text they matched.

3 warn

Warnconvert_color
The server marks "convert_color" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
Matched text
annotations: {"readOnlyHint":true,"openWorldHint":false}; The name "convert_color" says "convert": a word for a change.
What this check looks for
Warngenerate_scale
The server marks "generate_scale" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
Matched text
annotations: {"readOnlyHint":true,"openWorldHint":false}; The name "generate_scale" says "generate": a word for a change.
What this check looks for
Warngenerate_palette
The server marks "generate_palette" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
Matched text
annotations: {"readOnlyHint":true,"openWorldHint":false}; The name "generate_palette" says "generate": a word for a change.
What this check looks for

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

18 tools

Changes things 10Creates or changes something that can be changed back.Claude Code: ask

audit_paletteCheck every text and background pair in a palette with WCAG 2 and APCA, list which pairs are safe for body text, large text or only decoration, find colors that people with color b…No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it
Check every text and background pair in a palette with WCAG 2 and APCA, list which pairs are safe for body text, large text or only decoration, find colors that people with color blindness cannot tell apart, and flag colors outside sRGB. Use it before shipping a theme or chart palette.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: false
build_systemBuild a full color system from a brand color: 50–950 scales for primary, secondary, accent, neutral and status colors, light and dark theme roles, exported as a Tailwind v4 theme, …No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it
Build a full color system from a brand color: 50–950 scales for primary, secondary, accent, neutral and status colors, light and dark theme roles, exported as a Tailwind v4 theme, CSS variables, shadcn/ui globals.css or DTCG tokens, with a contrast audit of text and surface pairs.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: false
check_contrastCheck text contrast against a background with both WCAG 2 (ratio, AA and AAA for normal and large text) and APCA (Lc value and the usage level it allows).No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it
Check text contrast against a background with both WCAG 2 (ratio, AA and AAA for normal and large text) and APCA (Lc value and the usage level it allows). Also suggests the nearest text color that passes AA and AAA while keeping its hue.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: false
check_gamutCheck whether a color fits the sRGB, Display P3 and Rec.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it
Check whether a color fits the sRGB, Display P3 and Rec. 2020 gamuts, and get the closest sRGB fallback that keeps lightness and hue (CSS Color 4 gamut mapping in OKLCH).
Annotations the server declares
- readOnlyHint: true
- openWorldHint: false
convert_colorConvert a color between formats: hex, rgb, hsl, hsv, hwb, cmyk, lab, lch, oklab, oklch, display-p3, rec2020, xyz and platform code (swiftui, uikit, flutter, android).1 finding
Why it is in this group
- The name "convert_color" says "convert": a word for a change.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Findings
- Warn
  The server marks "convert_color" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
  Matched text
  annotations: {"readOnlyHint":true,"openWorldHint":false}; The name "convert_color" says "convert": a word for a change.
  What this check looks for
Description, as the server wrote it
Convert a color between formats: hex, rgb, hsl, hsv, hwb, cmyk, lab, lch, oklab, oklch, display-p3, rec2020, xyz and platform code (swiftui, uikit, flutter, android). Values follow CSS Color 4.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: false
export_tokensTurn a list of colors into ready code: CSS custom properties, a Tailwind v4 @theme block, SCSS variables, JSON, W3C design tokens (DTCG), a JavaScript array or an SVG swatch strip.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it
Turn a list of colors into ready code: CSS custom properties, a Tailwind v4 @theme block, SCSS variables, JSON, W3C design tokens (DTCG), a JavaScript array or an SVG swatch strip. Unnamed colors get their closest color name.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: false
generate_paletteGenerate a harmonious palette in OKLCH.1 finding
Why it is in this group
- The name "generate_palette" says "generate": a word for a change.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Findings
- Warn
  The server marks "generate_palette" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
  Matched text
  annotations: {"readOnlyHint":true,"openWorldHint":false}; The name "generate_palette" says "generate": a word for a change.
  What this check looks for
Description, as the server wrote it
Generate a harmonious palette in OKLCH. Keep colors you already have, pick a style (auto, analogous, complementary, triadic, monochromatic, pastel, vivid, muted, dark) and pass a seed to get the same palette every time.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: false
generate_scaleBuild an 11-step tint and shade scale (50, 100 … 900, 950) from one color in OKLCH, the same shape as Tailwind palettes, with even perceived lightness steps.1 finding
Why it is in this group
- The name "generate_scale" says "generate": a word for a change.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Findings
- Warn
  The server marks "generate_scale" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
  Matched text
  annotations: {"readOnlyHint":true,"openWorldHint":false}; The name "generate_scale" says "generate": a word for a change.
  What this check looks for
Description, as the server wrote it
Build an 11-step tint and shade scale (50, 100 … 900, 950) from one color in OKLCH, the same shape as Tailwind palettes, with even perceived lightness steps.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: false
make_gradientBuild a CSS gradient from 2 or more colors with interpolation in OKLab, OKLCH or sRGB.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it
Build a CSS gradient from 2 or more colors with interpolation in OKLab, OKLCH or sRGB. Returns modern CSS with the color space, a fallback with precomputed stops for older browsers, and the stop colors. OKLab avoids the gray middle that sRGB gradients get.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: false
mix_colorsMix two colors at a ratio in a chosen color space, like CSS color-mix().No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it
Mix two colors at a ratio in a chosen color space, like CSS color-mix(). OKLab keeps the middle bright, sRGB tends to turn gray. Returns the result and a ready color-mix() expression.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: false

Only reads 8Looks things up and changes nothing.Claude Code: allow

compare_colorsCompare two colors: CIEDE2000 and deltaE OK difference with a plain verdict (identical, nearly, similar, different, opposite), lightness shift in percent, chroma and hue shift, and…No findings
Why it is in this group
- The name "compare_colors" says "compare": a word for reading.
Description, as the server wrote it
Compare two colors: CIEDE2000 and deltaE OK difference with a plain verdict (identical, nearly, similar, different, opposite), lightness shift in percent, chroma and hue shift, and the contrast between them.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: false
find_colorsSearch color names by words, like "sage", "dusty rose", "midnight blue" or "бордовый", and get their HEX values.No findings
Why it is in this group
- The name "find_colors" says "find": a word for reading.
Description, as the server wrote it
Search color names by words, like "sage", "dusty rose", "midnight blue" or "бордовый", and get their HEX values. Searches common names in English and Russian and about 30 000 extended color names. Use it to turn a description into real colors.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: false
fix_contrastFind the closest color that reaches a contrast target by changing only OKLCH lightness, so the hue and character stay.No findings
Why it is in this group
- The description's first verb is "find": a word for reading.
Description, as the server wrote it
Find the closest color that reaches a contrast target by changing only OKLCH lightness, so the hue and character stay. Targets: aa (4.5:1), aa-large (3:1), aaa (7:1), apca-body (Lc 75), apca-content (Lc 60), apca-large (Lc 45). Adjust the text color or the background.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: false
harmoniesGet color harmonies for a base color, computed in OKLCH so lightness stays even: complementary, split-complementary, analogous, triadic, tetradic, square and monochromatic.No findings
Why it is in this group
- The description's first verb is "get": a word for reading.
Description, as the server wrote it
Get color harmonies for a base color, computed in OKLCH so lightness stays even: complementary, split-complementary, analogous, triadic, tetradic, square and monochromatic.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: false
nearest_namesFind the closest named colors, CSS color keywords and Tailwind CSS classes for a color, ranked by perceptual distance (deltaE OK).No findings
Why it is in this group
- The description's first verb is "find": a word for reading.
Description, as the server wrote it
Find the closest named colors, CSS color keywords and Tailwind CSS classes for a color, ranked by perceptual distance (deltaE OK).
Annotations the server declares
- readOnlyHint: true
- openWorldHint: false
parse_colorRead any color and describe it: HEX, RGB, HSL and OKLCH values, the closest human name, the closest Tailwind class, its hue family, whether it fits sRGB and Display P3, and which t…No findings
Why it is in this group
- The description's first verb is "read": a word for reading.
Description, as the server wrote it
Read any color and describe it: HEX, RGB, HSL and OKLCH values, the closest human name, the closest Tailwind class, its hue family, whether it fits sRGB and Display P3, and which text color, white or black, reads better on it.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: false
simulate_cvdShow how colors look with protanopia, deuteranopia, tritanopia and achromatopsia (Machado 2009 at full severity), and list the pairs that become hard to tell apart.No findings
Why it is in this group
- The description's first verb is "show": a word for reading.
Description, as the server wrote it
Show how colors look with protanopia, deuteranopia, tritanopia and achromatopsia (Machado 2009 at full severity), and list the pairs that become hard to tell apart.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: false
tints_shadesGet tints (mixed with white), shades (mixed with black) and tones (mixed with gray) of a color, evenly spaced, as HEX.No findings
Why it is in this group
- The description's first verb is "get": a word for reading.
Description, as the server wrote it
Get tints (mixed with white), shades (mixed with black) and tones (mixed with gray) of a color, evenly spaced, as HEX. Good for hover states, borders and backgrounds.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: false

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Exfil surface

Which tools read private data, which read text someone else can write, and which can send data out. One of each is a path a prompt injection can use.

No private-data, untrusted-input, outbound path in this server alone: no tool is tagged private-data or untrusted-input or outbound.

Reads private data0: Reads files, mail, messages, databases, secrets, calendars or repositories.
Reads text others write0: Brings in text someone else can write: web pages, inbound email, messages, issues and comments.
Can send data out0: Can carry data to people or systems: it sends, posts or publishes, or takes a recipient, channel or URL.

Other servers in the same agent add their own tools to these paths. Audit your whole setup to see them together.

Remote posture

What anyone on the internet sees at the remote endpoint: an anonymous initialize and tools/list, and the public OAuth metadata.

Looked at Oct 22, 2026, 14:38 UTC, unchanged since Oct 22, 2026. No credentials were sent and no tool was called. What is looked at.

Reachable: yes
HTTP status of an anonymous initialize: 200
tools/list served without credentials: yes
Tools that change things, listed without credentials: 10
Protocol version: 2025-06-18
WWW-Authenticate on 401: not observed
resource_metadata in WWW-Authenticate: none
RFC 9728 protected resource metadata: none
Authorization servers: none
Legacy HTTP+SSE transport: no
Dynamic client registration: not observed
Client ID metadata documents: not observed

WarnThe whole server
The endpoint served tools/list without credentials, and the list has 10 tools that change things (10 write). Whether a call also works without credentials was not tested: tools are never called.
Matched text
https://pickshade.com/api/mcp: tools/list returned 18 tools to an anonymous client, including convert_color (write), check_contrast (write), audit_palette (write), check_gamut (write), generate_scale (write) and 5 more
What this check looks for

Install

Pinned to version 0.2.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http pickshade https://pickshade.com/api/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change or a way out, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json

{
  "permissions": {
    "allow": [
      "mcp__pickshade__parse_color",
      "mcp__pickshade__find_colors",
      "mcp__pickshade__fix_contrast",
      "mcp__pickshade__nearest_names",
      "mcp__pickshade__compare_colors",
      "mcp__pickshade__tints_shades",
      "mcp__pickshade__harmonies",
      "mcp__pickshade__simulate_cvd"
    ],
    "ask": [
      "mcp__pickshade__convert_color",
      "mcp__pickshade__check_contrast",
      "mcp__pickshade__audit_palette",
      "mcp__pickshade__check_gamut",
      "mcp__pickshade__generate_scale",
      "mcp__pickshade__mix_colors",
      "mcp__pickshade__make_gradient",
      "mcp__pickshade__generate_palette",
      "mcp__pickshade__export_tokens",
      "mcp__pickshade__build_system"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. A read that can send data out (it takes a URL, say) asks first too. It assumes the server is installed as pickshade. Review it before you use it.

Keep track

Get told when this server's tools change: a new tool, a new description, a new class.

https://anlyon.dev/servers/com.pickshade/pickshade/changes.xml

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Declare what an action changes, and Anlyon puts it under a shared limit, binds every approval to the exact request, and grades the outcome. It works on any HTTPS API you can describe as an action.

Anlyon does not run, proxy or govern this MCP server. A tool your own code calls directly is not routed through Anlyon and is not governed by it.

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Source: MCP Registry · repository. Synced Oct 21, 2026, 18:00 UTC.

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