Brand gradient

GitHub gradient

The gradient GitHub's published colour tokens imply, derived by a pure function of the palette: primary → secondary in OKLab (OKLCH shorter hue when the hues are more than 140° apart; a tonal ramp when they are within ΔE 0.15), then a hero background with an ink that passes AA at the worst point along the line, a button surface with hover and active states, and the variant contact sheet. Same inputs, same gradients, forever — which is what makes them citable; the same values are served as --brand-gradient in the brand's brand.css.

#181717 #0969da

Open in the maker GitHub colors →Full brand page →developer tools and software collaboration

Source: github.com
Extracted: 2 September 2026
Version: 3

GitHub

white text · worst 5.19:1 · AA

white 5.19 AAblack 1.17 failsbanding medium

Hero and button

Hero background

Open in maker →

Chroma ×0.35 so it can carry text; ink white (inkFor at the midpoint). Passes AA for that ink at the worst point (5.06:1) without adjusting L.

white 5.06 AAblack 1.17 failsbanding medium

css

linear-gradient(135deg in oklab, #181717 0%, #567095 100%)

tailwind v4

bg-linear-to-br/oklab from-[#181717] to-[#567095]

Button / CTA

Open in maker →

ΔL 0.08 top→bottom in the primary's hue (a lit surface, not a rainbow); hover L +0.03, active L −0.03. White ink passes AA on the surface and both states (worst 14.85:1).

white 16.25 AAblack 1.09 failsbanding high

Get started

hover

active

label ink passes AA on all three

css

linear-gradient(180deg in oklch shorter hue, #212020 0%, #0f0e0e 100%)

tailwind v4

bg-linear-to-b/oklch from-[#212020] to-[#0f0e0e]

Variants

Tonal ramp

Open in maker →

white 9.83 AAblack 1.00 failsbanding medium

css

linear-gradient(135deg in oklch shorter hue, #454343 0%, #181717 50%, #000000 100%)

tailwind v4

bg-linear-to-br/oklch from-[#454343] via-[#181717] to-[#000000]

Analogous

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Primary #181717 is achromatic — harmony rotates #0969da instead. Partner hue from the analogous rule at the source colour's lightness.

white 4.88 AAblack 4.03 AA largebanding high

css

linear-gradient(135deg in oklab, #0969da 0%, #0c7a9d 100%)

tailwind v4

bg-linear-to-br/oklab from-[#0969da] to-[#0c7a9d]

Complementary

Open in maker →

Primary #181717 is achromatic — harmony rotates #0969da instead. Partner hue from the complementary rule at the source colour's lightness. ΔH 180° > 140° — interpolating in oklch (shorter hue) keeps the midpoint saturated.

white 5.14 AAblack 3.79 AA largebanding medium

css

linear-gradient(135deg in oklch shorter hue, #0969da 0%, #926509 100%)

tailwind v4

bg-linear-to-br/oklch from-[#0969da] to-[#926509]

Triadic

Open in maker →

Primary #181717 is achromatic — harmony rotates #0969da instead. Partner hue from the triadic rule at the source colour's lightness.

white 5.17 AAblack 3.69 AA largebanding medium

css

linear-gradient(135deg in oklab, #0969da 0%, #cc0e3e 100%)

tailwind v4

bg-linear-to-br/oklab from-[#0969da] to-[#cc0e3e]

Report — brand gradient

white ink: worst 5.19:1 at 100% (AA); black ink: worst 1.17:1 at 0% (fails AA) → use white text.
Banding medium: ~7px bands at 1440px — add grain 14 (≈2% soft-light noise) or shorten the ramp.

Export

The custom properties below are byte-identical to the gradient block in brand.css; the DTCG token is what tokens.json carries.

css custom properties · brand.css

:root {
  /* Brand gradient (derived) */
  /* worst-case contrast: white 5.19:1 AA, black 1.17:1 */
  --brand-gradient: linear-gradient(135deg in oklab, #181717 0%, #0969da 100%);
  /* hero — worst-case contrast: white 5.06:1 AA, black 1.17:1; ink passes AA at the worst point */
  --brand-gradient-hero: linear-gradient(135deg in oklab, #181717 0%, #567095 100%);
  --brand-gradient-hero-ink: #ffffff;
  /* button — worst-case contrast: white 16.25:1 AA, black 1.09:1 */
  --brand-gradient-button: linear-gradient(180deg in oklch shorter hue, #212020 0%, #0f0e0e 100%);
  --brand-gradient-button-hover: linear-gradient(180deg in oklch shorter hue, #292727 0%, #161515 100%);
  --brand-gradient-button-active: linear-gradient(180deg in oklch shorter hue, #1a1919 0%, #090808 100%);
  --brand-gradient-button-ink: #ffffff;
}

svg · brand gradient

<svg xmlns="http://www.w3.org/2000/svg" width="1440" height="600" viewBox="0 0 1440 600"><defs><linearGradient id="bs-gradient" gradientUnits="userSpaceOnUse" x1="210" y1="-210" x2="1230" y2="810"><stop offset="0%" stop-color="#181717"/><stop offset="7.14%" stop-color="#1a1d23"/><stop offset="14.29%" stop-color="#1b232f"/><stop offset="21.43%" stop-color="#1c293c"/><stop offset="28.57%" stop-color="#1d2e49"/><stop offset="35.71%" stop-color="#1d3456"/><stop offset="42.86%" stop-color="#1d3a64"/><stop offset="50%" stop-color="#1d4072"/><stop offset="57.14%" stop-color="#1d4680"/><stop offset="64.29%" stop-color="#1c4b8e"/><stop offset="71.43%" stop-color="#1a519d"/><stop offset="78.57%" stop-color="#1857ac"/><stop offset="85.71%" stop-color="#155dbb"/><stop offset="92.86%" stop-color="#1063ca"/><stop offset="100%" stop-color="#0969da"/></linearGradient></defs><rect width="1440" height="600" fill="url(#bs-gradient)"/></svg>

dtcg · tokens.json

{
  "gradient": {
    "brand": {
      "$type": "gradient",
      "$value": [
        {
          "color": {
            "colorSpace": "srgb",
            "components": [
              0.094,
              0.09,
              0.09
            ],
            "hex": "#181717"
          },
          "position": 0
        },
        {
          "color": {
            "colorSpace": "srgb",
            "components": [
              0.035,
              0.412,
              0.855
            ],
            "hex": "#0969da"
          },
          "position": 1
        }
      ],
      "$extensions": {
        "com.brandsweets": {
          "kind": "linear",
          "css": "linear-gradient(135deg in oklab, #181717 0%, #0969da 100%)",
          "interpolation": "oklab",
          "angle": 135,
          "name": "brand",
          "contrast": {
            "white": {
              "ratio": 5.192,
              "at": 1,
              "passesAA": true,
              "passesAALarge": true
            },
            "black": {
              "ratio": 1.174,
              "at": 0,
              "passesAA": false,
              "passesAALarge": false
            },
            "suggestedInk": "#ffffff"
          }
        }
      },
      "$description": "The canonical brand gradient (--brand-gradient)."
    },
    "hero": {
      "$type": "gradient",
      "$value": [
        {
          "color": {
            "colorSpace": "srgb",
            "components": [
              0.094,
              0.09,
              0.09
            ],
            "hex": "#181717"
          },
          "position": 0
        },
        {
          "color": {
            "colorSpace": "srgb",
            "components": [
              0.337,
              0.439,
              0.584
            ],
            "hex": "#567095"
          },
          "position": 1
        }
      ],
      "$extensions": {
        "com.brandsweets": {
          "kind": "linear",
          "css": "linear-gradient(135deg in oklab, #181717 0%, #567095 100%)",
          "interpolation": "oklab",
          "angle": 135,
          "name": "hero",
          "ink": "#ffffff",
          "contrast": {
            "white": {
              "ratio": 5.063,
              "at": 1,
              "passesAA": true,
              "passesAALarge": true
            },
            "black": {
              "ratio": 1.174,
              "at": 0,
              "passesAA": false,
              "passesAALarge": false
            },
            "suggestedInk": "#ffffff"
          }
        }
      },
      "$description": "Low-chroma hero background with a text-safe ink (--brand-gradient-hero)."
    },
    "button": {
      "$type": "gradient",
      "$value": [
        {
          "color": {
            "colorSpace": "srgb",
            "components": [
              0.129,
              0.125,
              0.125
            ],
            "hex": "#212020"
          },
          "position": 0
        },
        {
          "color": {
            "colorSpace": "srgb",
            "components": [
              0.059,
              0.055,
              0.055
            ],
            "hex": "#0f0e0e"
          },
          "position": 1
        }
      ],
      "$extensions": {
        "com.brandsweets": {
          "kind": "linear",
          "css": "linear-gradient(180deg in oklch shorter hue, #212020 0%, #0f0e0e 100%)",
          "interpolation": "oklch",
          "hue": "shorter",
          "angle": 180,
          "name": "button",
          "ink": "#ffffff",
          "states": {
            "hover": "linear-gradient(180deg in oklch shorter hue, #292727 0%, #161515 100%)",
            "active": "linear-gradient(180deg in oklch shorter hue, #1a1919 0%, #090808 100%)"
          },
          "contrast": {
            "white": {
              "ratio": 16.252,
              "at": 0,
              "passesAA": true,
              "passesAALarge": true
            },
            "black": {
              "ratio": 1.089,
              "at": 1,
              "passesAA": false,
              "passesAALarge": false
            },
            "suggestedInk": "#ffffff"
          }
        }
      },
      "$description": "Button / CTA surface with hover and active states (--brand-gradient-button)."
    }
  }
}

Colours

#181717 #0969da

mcpConnect your agent — GitHub's gradients on demand

live endpoint

Point any MCP client at the shared gradients endpoint and your agent gets the same engine as this page — make_gradient returns CSS with the interpolation space, Tailwind v4, SVG, a PNG URL, a DTCG token and the contrast report in one call; brand_gradients derives the whole contact sheet from a brand or a palette. Read-only, no key. Every gradient is a /gradients/new/… link: open it, refine, paste it back.

endpointhttps://mcp.brandsweets.com/gradients/mcp

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

try this prompt

›brand_gradients for github — give me the hero CSS and the ink that passes AA, then a version in oklch

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GitHub and its marks belong to their owner. This page uses the name nominatively to describe gradients derived from the brand's published colour values; it does not reproduce logos or other brand assets, and it is not affiliated with or endorsed by GitHub. Owner of this brand? Request a correction or removal → Machine-readable: gradients.md