brandsweets

Named gradient · uiGradients

Radioactive Heat

Radioactive Heat is a orange gradient from uiGradients (MIT) — #f7941e → #72c6ef → #00a651 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.

#f7941e#72c6ef#00a651
Open in the makerOriginal sRGB in the maker
Aa — the quick brown fox
black text · worst 6.57:1 · AA
white 1.90 failsblack 6.57 AAbanding 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.

sRGB19%
OKLab8%
OKLCH60%

Report

  • white ink: worst 1.90:1 at 49% (fails AA); black ink: worst 6.57:1 at 100% (AA) → use black text.
  • Banding medium: ~5px bands at 1440px — add grain 6 (≈1% soft-light noise) or shorten the ramp.

Export

css
.gradient {
  background-image: linear-gradient(90deg, #f7941e 0%, #f0993e 3.57%, #e99e53 7.14%, #e1a364 10.71%, #daa774 14.29%, #d2ab82 17.86%, #c9af8f 21.43%, #c1b39c 25%, #b8b6a9 28.57%, #aeb9b5 32.14%, #a4bcc1 35.71%, #99bfcd 39.29%, #8dc1d8 42.86%, #81c4e4 46.43%, #72c6ef 50%, #6cc4e4 53.57%, #66c2d9 57.14%, #60c0cf 60.71%, #5abec4 64.29%, #54bcb9 67.86%, #4ebaae 71.43%, #47b8a3 75%, #41b598 78.57%, #39b38d 82.14%, #32b082 85.71%, #2aae76 89.29%, #20ab6a 92.86%, #14a95e 96.43%, #00a651 100%);
  background-image: linear-gradient(90deg in oklab, #f7941e 0%, #72c6ef 50%, #00a651 100%);
}
tailwind v4
bg-linear-to-r/oklab from-[#f7941e] via-[#72c6ef] to-[#00a651]
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="#f7941e"/><stop offset="3.57%" stop-color="#f0993e"/><stop offset="7.14%" stop-color="#e99e53"/><stop offset="10.71%" stop-color="#e1a364"/><stop offset="14.29%" stop-color="#daa774"/><stop offset="17.86%" stop-color="#d2ab82"/><stop offset="21.43%" stop-color="#c9af8f"/><stop offset="25%" stop-color="#c1b39c"/><stop offset="28.57%" stop-color="#b8b6a9"/><stop offset="32.14%" stop-color="#aeb9b5"/><stop offset="35.71%" stop-color="#a4bcc1"/><stop offset="39.29%" stop-color="#99bfcd"/><stop offset="42.86%" stop-color="#8dc1d8"/><stop offset="46.43%" stop-color="#81c4e4"/><stop offset="50%" stop-color="#72c6ef"/><stop offset="53.57%" stop-color="#6cc4e4"/><stop offset="57.14%" stop-color="#66c2d9"/><stop offset="60.71%" stop-color="#60c0cf"/><stop offset="64.29%" stop-color="#5abec4"/><stop offset="67.86%" stop-color="#54bcb9"/><stop offset="71.43%" stop-color="#4ebaae"/><stop offset="75%" stop-color="#47b8a3"/><stop offset="78.57%" stop-color="#41b598"/><stop offset="82.14%" stop-color="#39b38d"/><stop offset="85.71%" stop-color="#32b082"/><stop offset="89.29%" stop-color="#2aae76"/><stop offset="92.86%" stop-color="#20ab6a"/><stop offset="96.43%" stop-color="#14a95e"/><stop offset="100%" stop-color="#00a651"/></linearGradient></defs><rect width="1440" height="600" fill="url(#bs-gradient)"/></svg>
dtcg
{
  "radioactive-heat": {
    "$type": "gradient",
    "$value": [
      {
        "color": {
          "colorSpace": "srgb",
          "components": [
            0.969,
            0.58,
            0.118
          ],
          "hex": "#f7941e"
        },
        "position": 0
      },
      {
        "color": {
          "colorSpace": "srgb",
          "components": [
            0.447,
            0.776,
            0.937
          ],
          "hex": "#72c6ef"
        },
        "position": 0.5
      },
      {
        "color": {
          "colorSpace": "srgb",
          "components": [
            0,
            0.651,
            0.318
          ],
          "hex": "#00a651"
        },
        "position": 1
      }
    ],
    "$extensions": {
      "com.brandsweets": {
        "kind": "linear",
        "css": "linear-gradient(90deg in oklab, #f7941e 0%, #72c6ef 50%, #00a651 100%)",
        "interpolation": "oklab",
        "angle": 90,
        "name": "Radioactive Heat",
        "contrast": {
          "white": {
            "ratio": 1.901,
            "at": 0.4921,
            "passesAA": false,
            "passesAALarge": false
          },
          "black": {
            "ratio": 6.573,
            "at": 1,
            "passesAA": true,
            "passesAALarge": true
          },
          "suggestedInk": "#000000"
        }
      }
    },
    "$description": "Radioactive Heat (uiGradients, MIT), rendered in OKLab."
  }
}

Tagged

Orange gradientsGreen gradients

More orange 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 Radioactive Heat gradient (#f7941e, #72c6ef, #00a651), re-interpolate it in oklch, and tell me the worst-case contrast for white text

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