brandsweets

Named gradient · uiGradients

Black Rosé

Black Rosé is a purple gradient from uiGradients (MIT) — #f4c4f3 → #fc67fa 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.

#f4c4f3#fc67fa
Open in the makerOriginal sRGB in the maker
Aa — the quick brown fox
black text · worst 8.46:1 · AA
white 1.50 failsblack 8.46 AAbanding 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.

sRGB50%
OKLab50%
OKLCH50%

Report

  • white ink: worst 1.50:1 at 0% (fails AA); black ink: worst 8.46:1 at 100% (AA) → use black text.
  • Banding high: ~15px bands at 1440px — add grain 32 (≈2% soft-light noise) or shorten the ramp.

Export

css
.gradient {
  background-image: linear-gradient(90deg, #f4c4f3 0%, #f5bef4 7.14%, #f6b8f4 14.29%, #f7b2f5 21.43%, #f8acf6 28.57%, #f9a6f6 35.71%, #f9a0f7 42.86%, #fa9af7 50%, #fa93f8 57.14%, #fb8cf8 64.29%, #fb86f9 71.43%, #fc7ef9 78.57%, #fc77f9 85.71%, #fc6ffa 92.86%, #fc67fa 100%);
  background-image: linear-gradient(90deg in oklab, #f4c4f3 0%, #fc67fa 100%);
}
tailwind v4
bg-linear-to-r/oklab from-[#f4c4f3] to-[#fc67fa]
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="#f4c4f3"/><stop offset="7.14%" stop-color="#f5bef4"/><stop offset="14.29%" stop-color="#f6b8f4"/><stop offset="21.43%" stop-color="#f7b2f5"/><stop offset="28.57%" stop-color="#f8acf6"/><stop offset="35.71%" stop-color="#f9a6f6"/><stop offset="42.86%" stop-color="#f9a0f7"/><stop offset="50%" stop-color="#fa9af7"/><stop offset="57.14%" stop-color="#fa93f8"/><stop offset="64.29%" stop-color="#fb8cf8"/><stop offset="71.43%" stop-color="#fb86f9"/><stop offset="78.57%" stop-color="#fc7ef9"/><stop offset="85.71%" stop-color="#fc77f9"/><stop offset="92.86%" stop-color="#fc6ffa"/><stop offset="100%" stop-color="#fc67fa"/></linearGradient></defs><rect width="1440" height="600" fill="url(#bs-gradient)"/></svg>
dtcg
{
  "black-rose": {
    "$type": "gradient",
    "$value": [
      {
        "color": {
          "colorSpace": "srgb",
          "components": [
            0.957,
            0.769,
            0.953
          ],
          "hex": "#f4c4f3"
        },
        "position": 0
      },
      {
        "color": {
          "colorSpace": "srgb",
          "components": [
            0.988,
            0.404,
            0.98
          ],
          "hex": "#fc67fa"
        },
        "position": 1
      }
    ],
    "$extensions": {
      "com.brandsweets": {
        "kind": "linear",
        "css": "linear-gradient(90deg in oklab, #f4c4f3 0%, #fc67fa 100%)",
        "interpolation": "oklab",
        "angle": 90,
        "name": "Black Rosé",
        "contrast": {
          "white": {
            "ratio": 1.496,
            "at": 0,
            "passesAA": false,
            "passesAALarge": false
          },
          "black": {
            "ratio": 8.46,
            "at": 1,
            "passesAA": true,
            "passesAALarge": true
          },
          "suggestedInk": "#000000"
        }
      }
    },
    "$description": "Black Rosé (uiGradients, MIT), rendered in OKLab."
  }
}

Tagged

Purple gradientsCoolVividLightMonochrome

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 Black Rosé gradient (#f4c4f3, #fc67fa), 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