Named gradient · uiGradients

Celestial

Celestial is a pink gradient from uiGradients (MIT) — #c33764 → #1d2671 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.

#c33764 #1d2671

Open in the maker Original sRGB in the maker

Aa — the quick brown fox

white text · worst 5.18:1 · AA

white 5.18 AAblack 1.57 failsbanding medium

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.

sRGB73%

OKLab65%

OKLCH84%

Report

white ink: worst 5.18:1 at 0% (AA); black ink: worst 1.57:1 at 100% (fails AA) → use white text.
Banding medium: ~9px bands at 1440px — add grain 18 (≈2% soft-light noise) or shorten the ramp.

Export

css

.gradient {
  background-image: linear-gradient(90deg, #c33764 0%, #b73966 7.14%, #ab3a68 14.29%, #9f3b69 21.43%, #933b6b 28.57%, #873b6c 35.71%, #7c3b6d 42.86%, #703a6e 50%, #65386f 57.14%, #59366f 64.29%, #4e3470 71.43%, #423170 78.57%, #362e71 85.71%, #2a2a71 92.86%, #1d2671 100%);
  background-image: linear-gradient(90deg in oklab, #c33764 0%, #1d2671 100%);
}

tailwind v4

bg-linear-to-r/oklab from-[#c33764] to-[#1d2671]

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="#c33764"/><stop offset="7.14%" stop-color="#b73966"/><stop offset="14.29%" stop-color="#ab3a68"/><stop offset="21.43%" stop-color="#9f3b69"/><stop offset="28.57%" stop-color="#933b6b"/><stop offset="35.71%" stop-color="#873b6c"/><stop offset="42.86%" stop-color="#7c3b6d"/><stop offset="50%" stop-color="#703a6e"/><stop offset="57.14%" stop-color="#65386f"/><stop offset="64.29%" stop-color="#59366f"/><stop offset="71.43%" stop-color="#4e3470"/><stop offset="78.57%" stop-color="#423170"/><stop offset="85.71%" stop-color="#362e71"/><stop offset="92.86%" stop-color="#2a2a71"/><stop offset="100%" stop-color="#1d2671"/></linearGradient></defs><rect width="1440" height="600" fill="url(#bs-gradient)"/></svg>

dtcg

{
  "celestial": {
    "$type": "gradient",
    "$value": [
      {
        "color": {
          "colorSpace": "srgb",
          "components": [
            0.765,
            0.216,
            0.392
          ],
          "hex": "#c33764"
        },
        "position": 0
      },
      {
        "color": {
          "colorSpace": "srgb",
          "components": [
            0.114,
            0.149,
            0.443
          ],
          "hex": "#1d2671"
        },
        "position": 1
      }
    ],
    "$extensions": {
      "com.brandsweets": {
        "kind": "linear",
        "css": "linear-gradient(90deg in oklab, #c33764 0%, #1d2671 100%)",
        "interpolation": "oklab",
        "angle": 90,
        "name": "Celestial",
        "contrast": {
          "white": {
            "ratio": 5.184,
            "at": 0,
            "passesAA": true,
            "passesAALarge": true
          },
          "black": {
            "ratio": 1.568,
            "at": 1,
            "passesAA": false,
            "passesAALarge": false
          },
          "suggestedInk": "#ffffff"
        }
      }
    },
    "$description": "Celestial (uiGradients, MIT), rendered in OKLab."
  }
}

Tagged

white 1.06 failsblack 9.08 AA

Open in maker →

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 Celestial gradient (#c33764, #1d2671), 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