Brand gradient

Mastodon hosted on mastodon.social gradient

The gradient Mastodon hosted on mastodon.social'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.

#6464fc #8484fc #ffb900

Open in the maker Mastodon hosted on mastodon.social colors →Full brand page →social

Source: mastodon.social
Extracted: 2 September 2026
Version: 3

Mastodon hosted on mastodon.social

black text · worst 2.15:1 · fails

white 2.15 failsblack 2.15 failsbanding high

Hero and button

Hero background

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Chroma ×0.35 so it can carry text; ink white (inkFor at the midpoint). L shifted −0.20 until the ink passes AA at the worst point (4.53:1).

white 4.53 AAblack 1.13 failsbanding high

css

linear-gradient(135deg in oklch shorter hue, #6f7592 0%, #363d6f 50%, #140a38 100%)

tailwind v4

bg-linear-to-br/oklch from-[#6f7592] via-[#363d6f] to-[#140a38]

Button / CTA

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ΔL 0.08 top→bottom in the primary's hue (a lit surface, not a rainbow); hover L +0.03, active L −0.03. L shifted −0.08 so white ink passes AA on the surface and both states (worst 4.59:1).

white 5.21 AAblack 2.82 failsbanding high

Get started

hover

active

label ink passes AA on all three

css

linear-gradient(180deg in oklch shorter hue, #5a57ee 0%, #473bd2 100%)

tailwind v4

bg-linear-to-b/oklch from-[#5a57ee] to-[#473bd2]

Variants

Tonal ramp

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white 2.15 failsblack 2.15 failsbanding high

css

linear-gradient(135deg in oklch shorter hue, #9fabff 0%, #6464fc 50%, #3a23bd 100%)

tailwind v4

bg-linear-to-br/oklch from-[#9fabff] via-[#6464fc] to-[#3a23bd]

Analogous

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Partner hue from the analogous rule at the source colour's lightness.

white 4.07 AA largeblack 4.75 AAbanding high

css

linear-gradient(135deg in oklab, #6464fc 0%, #0d82d2 100%)

tailwind v4

bg-linear-to-br/oklab from-[#6464fc] to-[#0d82d2]

Complementary

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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 3.69 AA largeblack 4.76 AAbanding medium

css

linear-gradient(135deg in oklch shorter hue, #6464fc 0%, #917d0c 100%)

tailwind v4

bg-linear-to-br/oklch from-[#6464fc] to-[#917d0c]

Triadic

Open in maker →

Partner hue from the triadic rule at the source colour's lightness.

white 4.28 AA largeblack 4.72 AAbanding medium

css

linear-gradient(135deg in oklab, #6464fc 0%, #d7440b 100%)

tailwind v4

bg-linear-to-br/oklab from-[#6464fc] to-[#d7440b]

Report — brand gradient

white ink: worst 2.15:1 at 0% (fails AA); black ink: worst 2.15:1 at 100% (fails AA) → use black text.
Neither ink passes AA at the worst point — treat as decorative or add a scrim (rgba(0,0,0,.35) typically lifts white ink past 4:1).
Banding high: ~11px bands at 1440px — add grain 23 (≈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 2.15:1, black 2.15:1 */
  --brand-gradient: linear-gradient(135deg in oklch shorter hue, #9fabff 0%, #6464fc 50%, #3a23bd 100%);
  /* hero — worst-case contrast: white 4.53:1 AA, black 1.13:1; ink passes AA at the worst point */
  --brand-gradient-hero: linear-gradient(135deg in oklch shorter hue, #6f7592 0%, #363d6f 50%, #140a38 100%);
  --brand-gradient-hero-ink: #ffffff;
  /* button — worst-case contrast: white 5.21:1 AA, black 2.82:1 */
  --brand-gradient-button: linear-gradient(180deg in oklch shorter hue, #5a57ee 0%, #473bd2 100%);
  --brand-gradient-button-hover: linear-gradient(180deg in oklch shorter hue, #6161f8 0%, #4e46dc 100%);
  --brand-gradient-button-active: linear-gradient(180deg in oklch shorter hue, #524ce3 0%, #4030c7 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="#9fabff"/><stop offset="3.57%" stop-color="#9aa6ff"/><stop offset="7.14%" stop-color="#96a2ff"/><stop offset="10.71%" stop-color="#919dff"/><stop offset="14.29%" stop-color="#8c98ff"/><stop offset="17.86%" stop-color="#8893ff"/><stop offset="21.43%" stop-color="#848eff"/><stop offset="25%" stop-color="#7f89fe"/><stop offset="28.57%" stop-color="#7b84fe"/><stop offset="32.14%" stop-color="#777ffe"/><stop offset="35.71%" stop-color="#737afe"/><stop offset="39.29%" stop-color="#6f75fd"/><stop offset="42.86%" stop-color="#6b6ffd"/><stop offset="46.43%" stop-color="#686afc"/><stop offset="50%" stop-color="#6464fc"/><stop offset="53.57%" stop-color="#6160f7"/><stop offset="57.14%" stop-color="#5d5bf3"/><stop offset="60.71%" stop-color="#5a57ee"/><stop offset="64.29%" stop-color="#5753ea"/><stop offset="67.86%" stop-color="#544ee5"/><stop offset="71.43%" stop-color="#514ae1"/><stop offset="75%" stop-color="#4e46dc"/><stop offset="78.57%" stop-color="#4b41d8"/><stop offset="82.14%" stop-color="#483cd3"/><stop offset="85.71%" stop-color="#4538cf"/><stop offset="89.29%" stop-color="#4233ca"/><stop offset="92.86%" stop-color="#3f2ec6"/><stop offset="96.43%" stop-color="#3d29c1"/><stop offset="100%" stop-color="#3a23bd"/></linearGradient></defs><rect width="1440" height="600" fill="url(#bs-gradient)"/></svg>

dtcg · tokens.json

{
  "gradient": {
    "brand": {
      "$type": "gradient",
      "$value": [
        {
          "color": {
            "colorSpace": "srgb",
            "components": [
              0.624,
              0.671,
              1
            ],
            "hex": "#9fabff"
          },
          "position": 0
        },
        {
          "color": {
            "colorSpace": "srgb",
            "components": [
              0.392,
              0.392,
              0.988
            ],
            "hex": "#6464fc"
          },
          "position": 0.5
        },
        {
          "color": {
            "colorSpace": "srgb",
            "components": [
              0.227,
              0.137,
              0.741
            ],
            "hex": "#3a23bd"
          },
          "position": 1
        }
      ],
      "$extensions": {
        "com.brandsweets": {
          "kind": "linear",
          "css": "linear-gradient(135deg in oklch shorter hue, #9fabff 0%, #6464fc 50%, #3a23bd 100%)",
          "interpolation": "oklch",
          "hue": "shorter",
          "angle": 135,
          "name": "brand",
          "contrast": {
            "white": {
              "ratio": 2.155,
              "at": 0,
              "passesAA": false,
              "passesAALarge": false
            },
            "black": {
              "ratio": 2.155,
              "at": 1,
              "passesAA": false,
              "passesAALarge": false
            },
            "suggestedInk": "#000000"
          }
        }
      },
      "$description": "The canonical brand gradient (--brand-gradient)."
    },
    "hero": {
      "$type": "gradient",
      "$value": [
        {
          "color": {
            "colorSpace": "srgb",
            "components": [
              0.435,
              0.459,
              0.573
            ],
            "hex": "#6f7592"
          },
          "position": 0
        },
        {
          "color": {
            "colorSpace": "srgb",
            "components": [
              0.212,
              0.239,
              0.435
            ],
            "hex": "#363d6f"
          },
          "position": 0.5
        },
        {
          "color": {
            "colorSpace": "srgb",
            "components": [
              0.078,
              0.039,
              0.22
            ],
            "hex": "#140a38"
          },
          "position": 1
        }
      ],
      "$extensions": {
        "com.brandsweets": {
          "kind": "linear",
          "css": "linear-gradient(135deg in oklch shorter hue, #6f7592 0%, #363d6f 50%, #140a38 100%)",
          "interpolation": "oklch",
          "hue": "shorter",
          "angle": 135,
          "name": "hero",
          "ink": "#ffffff",
          "contrast": {
            "white": {
              "ratio": 4.53,
              "at": 0,
              "passesAA": true,
              "passesAALarge": true
            },
            "black": {
              "ratio": 1.13,
              "at": 1,
              "passesAA": false,
              "passesAALarge": false
            },
            "suggestedInk": "#ffffff"
          }
        }
      },
      "$description": "Low-chroma hero background with a text-safe ink (--brand-gradient-hero)."
    },
    "button": {
      "$type": "gradient",
      "$value": [
        {
          "color": {
            "colorSpace": "srgb",
            "components": [
              0.353,
              0.341,
              0.933
            ],
            "hex": "#5a57ee"
          },
          "position": 0
        },
        {
          "color": {
            "colorSpace": "srgb",
            "components": [
              0.278,
              0.231,
              0.824
            ],
            "hex": "#473bd2"
          },
          "position": 1
        }
      ],
      "$extensions": {
        "com.brandsweets": {
          "kind": "linear",
          "css": "linear-gradient(180deg in oklch shorter hue, #5a57ee 0%, #473bd2 100%)",
          "interpolation": "oklch",
          "hue": "shorter",
          "angle": 180,
          "name": "button",
          "ink": "#ffffff",
          "states": {
            "hover": "linear-gradient(180deg in oklch shorter hue, #6161f8 0%, #4e46dc 100%)",
            "active": "linear-gradient(180deg in oklch shorter hue, #524ce3 0%, #4030c7 100%)"
          },
          "contrast": {
            "white": {
              "ratio": 5.208,
              "at": 0,
              "passesAA": true,
              "passesAALarge": true
            },
            "black": {
              "ratio": 2.824,
              "at": 0.9841,
              "passesAA": false,
              "passesAALarge": false
            },
            "suggestedInk": "#ffffff"
          }
        }
      },
      "$description": "Button / CTA surface with hover and active states (--brand-gradient-button)."
    }
  }
}

Colours

#6464fc #8484fc #ffb900

mcpConnect your agent — Mastodon hosted on mastodon.social'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 mastodon-social — give me the hero CSS and the ink that passes AA, then a version in oklch

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

Mastodon hosted on mastodon.social 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 Mastodon hosted on mastodon.social. Owner of this brand? Request a correction or removal → Machine-readable: gradients.md