brandsweets

Named gradient · uiGradients

Crimson Tide

Crimson Tide is a purple gradient from uiGradients (MIT) — #642b73 → #c6426e at 90°. Shown here interpolated in OKLab, next to the original sRGB, with the worst-case contrast for white and black text and every export.

#642b73#c6426e
Open in the makerOriginal sRGB in the maker
Aa — the quick brown fox
white text · worst 4.77:1 · AA
white 4.77 AAblack 2.13 failsbanding high

Same stops, three spaces

The source renders this in sRGB. The number is how much chroma survives at the dullest point along the line — the difference between the first bar and the others is the grey that OKLab removes.

sRGB86%
OKLab86%
OKLCH86%

Report

  • white ink: worst 4.77:1 at 100% (AA); black ink: worst 2.13:1 at 0% (fails AA) → use white text.
  • Banding high: ~15px bands at 1440px — add grain 30 (≈2% soft-light noise) or shorten the ramp.

Export

css
.gradient {
  background-image: linear-gradient(90deg, #642b73 0%, #6b2d73 7.14%, #713073 14.29%, #783273 21.43%, #7f3473 28.57%, #863673 35.71%, #8c3773 42.86%, #933972 50%, #9b3b72 57.14%, #a23c71 64.29%, #a93d71 71.43%, #b03f70 78.57%, #b74070 85.71%, #bf416f 92.86%, #c6426e 100%);
  background-image: linear-gradient(90deg in oklab, #642b73 0%, #c6426e 100%);
}
tailwind v4
bg-linear-to-r/oklab from-[#642b73] to-[#c6426e]
svg
<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="0" y1="300" x2="1440" y2="300"><stop offset="0%" stop-color="#642b73"/><stop offset="7.14%" stop-color="#6b2d73"/><stop offset="14.29%" stop-color="#713073"/><stop offset="21.43%" stop-color="#783273"/><stop offset="28.57%" stop-color="#7f3473"/><stop offset="35.71%" stop-color="#863673"/><stop offset="42.86%" stop-color="#8c3773"/><stop offset="50%" stop-color="#933972"/><stop offset="57.14%" stop-color="#9b3b72"/><stop offset="64.29%" stop-color="#a23c71"/><stop offset="71.43%" stop-color="#a93d71"/><stop offset="78.57%" stop-color="#b03f70"/><stop offset="85.71%" stop-color="#b74070"/><stop offset="92.86%" stop-color="#bf416f"/><stop offset="100%" stop-color="#c6426e"/></linearGradient></defs><rect width="1440" height="600" fill="url(#bs-gradient)"/></svg>
dtcg
{
  "crimson-tide": {
    "$type": "gradient",
    "$value": [
      {
        "color": {
          "colorSpace": "srgb",
          "components": [
            0.392,
            0.169,
            0.451
          ],
          "hex": "#642b73"
        },
        "position": 0
      },
      {
        "color": {
          "colorSpace": "srgb",
          "components": [
            0.776,
            0.259,
            0.431
          ],
          "hex": "#c6426e"
        },
        "position": 1
      }
    ],
    "$extensions": {
      "com.brandsweets": {
        "kind": "linear",
        "css": "linear-gradient(90deg in oklab, #642b73 0%, #c6426e 100%)",
        "interpolation": "oklab",
        "angle": 90,
        "name": "Crimson Tide",
        "contrast": {
          "white": {
            "ratio": 4.767,
            "at": 1,
            "passesAA": true,
            "passesAALarge": true
          },
          "black": {
            "ratio": 2.135,
            "at": 0,
            "passesAA": false,
            "passesAALarge": false
          },
          "suggestedInk": "#ffffff"
        }
      }
    },
    "$description": "Crimson Tide (uiGradients, MIT), rendered in OKLab."
  }
}

Tagged

Purple gradientsPink gradientsJewel Tones

More purple gradients

mcpConnect your agent to the gradient engine
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

›take the Crimson Tide gradient (#642b73, #c6426e), re-interpolate it in oklch, and tell me the worst-case contrast for white text

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

Machine-readable: gradients.md · From uiGradients (MIT) — licences