brandsweets

Named gradient · WebGradients

Cold Evening

Cold Evening is a blue gradient from WebGradients (MIT) — #0c3483 → #a2b6df → #6b8cce 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.

#0c3483#a2b6df#6b8cce
Open in the makerOriginal sRGB in the maker
Aa — the quick brown fox
white text · worst 2.04:1 · fails
white 2.04 failsblack 1.83 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.

sRGB52%
OKLab52%
OKLCH52%

Report

  • white ink: worst 2.04:1 at 100% (fails AA); black ink: worst 1.83:1 at 0% (fails AA) → use white text.
  • Neither ink passes AA at the worst point — treat as decorative or add a scrim (rgba(0,0,0,.35) typically lifts white ink past 4:1).
  • Banding medium: ~15px bands at 1440px — add grain 31 (≈2% soft-light noise) or shorten the ramp.

Export

css
.gradient {
  background-image: linear-gradient(0deg, #0c3483 0%, #173e8a 7.14%, #224790 14.29%, #2c5097 21.43%, #36599e 28.57%, #4162a4 35.71%, #4b6cab 42.86%, #5575b2 50%, #607eb8 57.14%, #6b87bf 64.29%, #7690c5 71.43%, #809acc 78.57%, #8ca3d2 85.71%, #97add9 92.86%, #a2b6df 100%, #6b8cce 100%, #6b8cce 100%, #6b8cce 100%, #6b8cce 100%, #6b8cce 100%, #6b8cce 100%, #6b8cce 100%, #6b8cce 100%, #6b8cce 100%, #6b8cce 100%, #6b8cce 100%, #6b8cce 100%, #6b8cce 100%, #6b8cce 100%);
  background-image: linear-gradient(0deg in oklab, #0c3483 0%, #a2b6df 100%, #6b8cce 100%);
}
tailwind v4
bg-linear-to-t/oklab from-[#0c3483] via-[#a2b6df] via-100% to-[#6b8cce]
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="#0c3483"/><stop offset="7.14%" stop-color="#173e8a"/><stop offset="14.29%" stop-color="#224790"/><stop offset="21.43%" stop-color="#2c5097"/><stop offset="28.57%" stop-color="#36599e"/><stop offset="35.71%" stop-color="#4162a4"/><stop offset="42.86%" stop-color="#4b6cab"/><stop offset="50%" stop-color="#5575b2"/><stop offset="57.14%" stop-color="#607eb8"/><stop offset="64.29%" stop-color="#6b87bf"/><stop offset="71.43%" stop-color="#7690c5"/><stop offset="78.57%" stop-color="#809acc"/><stop offset="85.71%" stop-color="#8ca3d2"/><stop offset="92.86%" stop-color="#97add9"/><stop offset="100%" stop-color="#a2b6df"/><stop offset="100%" stop-color="#6b8cce"/><stop offset="100%" stop-color="#6b8cce"/><stop offset="100%" stop-color="#6b8cce"/><stop offset="100%" stop-color="#6b8cce"/><stop offset="100%" stop-color="#6b8cce"/><stop offset="100%" stop-color="#6b8cce"/><stop offset="100%" stop-color="#6b8cce"/><stop offset="100%" stop-color="#6b8cce"/><stop offset="100%" stop-color="#6b8cce"/><stop offset="100%" stop-color="#6b8cce"/><stop offset="100%" stop-color="#6b8cce"/><stop offset="100%" stop-color="#6b8cce"/><stop offset="100%" stop-color="#6b8cce"/><stop offset="100%" stop-color="#6b8cce"/></linearGradient></defs><rect width="1440" height="600" fill="url(#bs-gradient)"/></svg>
dtcg
{
  "cold-evening": {
    "$type": "gradient",
    "$value": [
      {
        "color": {
          "colorSpace": "srgb",
          "components": [
            0.047,
            0.204,
            0.514
          ],
          "hex": "#0c3483"
        },
        "position": 0
      },
      {
        "color": {
          "colorSpace": "srgb",
          "components": [
            0.635,
            0.714,
            0.875
          ],
          "hex": "#a2b6df"
        },
        "position": 1
      },
      {
        "color": {
          "colorSpace": "srgb",
          "components": [
            0.42,
            0.549,
            0.808
          ],
          "hex": "#6b8cce"
        },
        "position": 1
      }
    ],
    "$extensions": {
      "com.brandsweets": {
        "kind": "linear",
        "css": "linear-gradient(0deg in oklab, #0c3483 0%, #a2b6df 100%, #6b8cce 100%)",
        "interpolation": "oklab",
        "angle": 0,
        "name": "Cold Evening",
        "contrast": {
          "white": {
            "ratio": 2.04,
            "at": 1,
            "passesAA": false,
            "passesAALarge": false
          },
          "black": {
            "ratio": 1.835,
            "at": 0,
            "passesAA": false,
            "passesAALarge": false
          },
          "suggestedInk": "#ffffff"
        }
      }
    },
    "$description": "Cold Evening (WebGradients, MIT), rendered in OKLab."
  }
}

Tagged

Blue gradientsCoolMonochromeOcean

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 Cold Evening gradient (#0c3483, #a2b6df, #6b8cce), 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