brandsweets

Named gradient · WebGradients

Eternal Constance

Eternal Constance is a blue gradient from WebGradients (MIT) — #09203f → #537895 at 0°. Shown here interpolated in OKLab, next to the original sRGB, with the worst-case contrast for white and black text and every export.

#09203f#537895
Open in the makerOriginal sRGB in the maker
Aa — the quick brown fox
white text · worst 4.68:1 · AA
white 4.68 AAblack 1.29 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.

sRGB95%
OKLab96%
OKLCH96%

Report

  • white ink: worst 4.68:1 at 100% (AA); black ink: worst 1.29:1 at 0% (fails AA) → use white text.
  • Banding medium: ~16px bands at 1440px — add grain 34 (≈2% soft-light noise) or shorten the ramp.

Export

css
.gradient {
  background-image: linear-gradient(0deg, #09203f 0%, #0e2645 7.14%, #132c4b 14.29%, #183251 21.43%, #1d3857 28.57%, #223e5d 35.71%, #274463 42.86%, #2c4a69 50%, #31516f 57.14%, #375775 64.29%, #3c5d7b 71.43%, #426482 78.57%, #486b88 85.71%, #4d718f 92.86%, #537895 100%);
  background-image: linear-gradient(0deg in oklab, #09203f 0%, #537895 100%);
}
tailwind v4
bg-linear-to-t/oklab from-[#09203f] to-[#537895]
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="720" y1="600" x2="720" y2="0"><stop offset="0%" stop-color="#09203f"/><stop offset="7.14%" stop-color="#0e2645"/><stop offset="14.29%" stop-color="#132c4b"/><stop offset="21.43%" stop-color="#183251"/><stop offset="28.57%" stop-color="#1d3857"/><stop offset="35.71%" stop-color="#223e5d"/><stop offset="42.86%" stop-color="#274463"/><stop offset="50%" stop-color="#2c4a69"/><stop offset="57.14%" stop-color="#31516f"/><stop offset="64.29%" stop-color="#375775"/><stop offset="71.43%" stop-color="#3c5d7b"/><stop offset="78.57%" stop-color="#426482"/><stop offset="85.71%" stop-color="#486b88"/><stop offset="92.86%" stop-color="#4d718f"/><stop offset="100%" stop-color="#537895"/></linearGradient></defs><rect width="1440" height="600" fill="url(#bs-gradient)"/></svg>
dtcg
{
  "eternal-constance": {
    "$type": "gradient",
    "$value": [
      {
        "color": {
          "colorSpace": "srgb",
          "components": [
            0.035,
            0.125,
            0.247
          ],
          "hex": "#09203f"
        },
        "position": 0
      },
      {
        "color": {
          "colorSpace": "srgb",
          "components": [
            0.325,
            0.471,
            0.584
          ],
          "hex": "#537895"
        },
        "position": 1
      }
    ],
    "$extensions": {
      "com.brandsweets": {
        "kind": "linear",
        "css": "linear-gradient(0deg in oklab, #09203f 0%, #537895 100%)",
        "interpolation": "oklab",
        "angle": 0,
        "name": "Eternal Constance",
        "contrast": {
          "white": {
            "ratio": 4.679,
            "at": 1,
            "passesAA": true,
            "passesAALarge": true
          },
          "black": {
            "ratio": 1.29,
            "at": 0,
            "passesAA": false,
            "passesAALarge": false
          },
          "suggestedInk": "#ffffff"
        }
      }
    },
    "$description": "Eternal Constance (WebGradients, MIT), rendered in OKLab."
  }
}

Tagged

Blue gradientsCoolMutedMonochromeOcean

More blue 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 Eternal Constance gradient (#09203f, #537895), 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 WebGradients (MIT) — licences