Brand colors

GitHub colors

GitHub's 8 brand colors as structured tokens — every role's hex with copy buttons, contrast pairs measured against the brand's own surface, and CSS / DTCG downloads. Ask your agent for a palette inspired by GitHub via the colors MCP.

Full brand page →developer tools and software collaboration

primary181717 accent0969da surfaceffffff text1f2328 textMuted57606a borderd0d7de dangercf222e success1a7f37

Role tokens

primary#181717 · GitHub Black
accent#0969da · Primer Blue
surface#ffffff
text#1f2328
textMuted#57606a
border#d0d7de
danger#cf222e
success#1a7f37

Open in palette tool Contrast checker

Contrast pairs

Pair	Ratio	AA	AA large	AAA	Fix
Aaprimary on surface	17.89:1	pass	pass	pass	—
Aaaccent on surface	5.19:1	pass	pass	fail	AAA: accent → #0756b0 (7.08:1)
Aatext on surface	15.8:1	pass	pass	pass	—
AatextMuted on surface	6.39:1	pass	pass	fail	AAA: textMuted → #505962 (7.13:1)
Aaborder on surface	1.45:1	fail	fail	fail	AA: border → #62788d (4.57:1)
Aadanger on surface	5.36:1	pass	pass	fail	AAA: danger → #ab1c25 (7.18:1)
Aasuccess on surface	5.08:1	pass	pass	fail	AAA: success → #15662c (7.07:1)
Aatext on primary	1.13:1	fail	fail	fail	AA: text → #758395 (4.63:1)
Aatext on accent	3.04:1	fail	pass	fail	AA: text → #eef0f2 (4.54:1)

Measured against the brand's own surface where it has one; fixes move lightness only so they stay on-hue.

Download

The same tokens as CSS custom properties, a Tailwind theme block, and a W3C DTCG color group — or fetch tokens.json / brand.css for the full brand.

css · github-colors.css

:root {
  --color-primary: #181717;
  --color-accent: #0969da;
  --color-surface: #ffffff;
  --color-text: #1f2328;
  --color-textMuted: #57606a;
  --color-border: #d0d7de;
  --color-danger: #cf222e;
  --color-success: #1a7f37;
}

tailwind · tailwind.config.js

// tailwind.config.js
module.exports = {
  theme: {
    extend: {
      colors: {
        primary: "#181717",
        accent: "#0969da",
        surface: "#ffffff",
        text: "#1f2328",
        textMuted: "#57606a",
        border: "#d0d7de",
        danger: "#cf222e",
        success: "#1a7f37",
      },
    },
  },
};

dtcg · github-colors.tokens.json

{
  "$description": "GitHub brand colors",
  "color": {
    "primary": {
      "$type": "color",
      "$value": "#181717"
    },
    "accent": {
      "$type": "color",
      "$value": "#0969da"
    },
    "surface": {
      "$type": "color",
      "$value": "#ffffff"
    },
    "text": {
      "$type": "color",
      "$value": "#1f2328"
    },
    "textMuted": {
      "$type": "color",
      "$value": "#57606a"
    },
    "border": {
      "$type": "color",
      "$value": "#d0d7de"
    },
    "danger": {
      "$type": "color",
      "$value": "#cf222e"
    },
    "success": {
      "$type": "color",
      "$value": "#1a7f37"
    }
  }
}

Similar brand palettes

Public brands whose primary sits closest on the hue wheel.

mcpConnect your agent — riff on GitHub

live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp

claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp

try this prompt

›build a palette inspired by GitHub for a developer tools and software collaboration startup — keep the feel, change the primary, and give me the /palettes/new link

tool url/palettes/new/181717-0969da-ffffff-1f2328-57606a?lock=0

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.