brandsweets

Named gradient · uiGradients

Sea Blue

Sea Blue is a blue gradient from uiGradients (MIT) — #2b5876 → #4e4376 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.

#2b5876#4e4376
Open in the makerOriginal sRGB in the maker
Aa — the quick brown fox
white text · worst 7.60:1 · AA
white 7.60 AAblack 2.39 failsbanding 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.

sRGB90%
OKLab87%
OKLCH90%

Report

  • white ink: worst 7.60:1 at 2% (AA); black ink: worst 2.39:1 at 98% (fails AA) → use white text.
  • Banding high: ~41px bands at 1440px — add grain 50 (≈3% soft-light noise) or shorten the ramp.

Export

css
.gradient {
  background-image: linear-gradient(90deg, #2b5876 0%, #2f5776 7.14%, #325576 14.29%, #355476 21.43%, #385276 28.57%, #3b5176 35.71%, #3e4f76 42.86%, #404e76 50%, #424c76 57.14%, #444b76 64.29%, #464976 71.43%, #484876 78.57%, #4a4676 85.71%, #4c4576 92.86%, #4e4376 100%);
  background-image: linear-gradient(90deg in oklab, #2b5876 0%, #4e4376 100%);
}
tailwind v4
bg-linear-to-r/oklab from-[#2b5876] to-[#4e4376]
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="#2b5876"/><stop offset="7.14%" stop-color="#2f5776"/><stop offset="14.29%" stop-color="#325576"/><stop offset="21.43%" stop-color="#355476"/><stop offset="28.57%" stop-color="#385276"/><stop offset="35.71%" stop-color="#3b5176"/><stop offset="42.86%" stop-color="#3e4f76"/><stop offset="50%" stop-color="#404e76"/><stop offset="57.14%" stop-color="#424c76"/><stop offset="64.29%" stop-color="#444b76"/><stop offset="71.43%" stop-color="#464976"/><stop offset="78.57%" stop-color="#484876"/><stop offset="85.71%" stop-color="#4a4676"/><stop offset="92.86%" stop-color="#4c4576"/><stop offset="100%" stop-color="#4e4376"/></linearGradient></defs><rect width="1440" height="600" fill="url(#bs-gradient)"/></svg>
dtcg
{
  "sea-blue": {
    "$type": "gradient",
    "$value": [
      {
        "color": {
          "colorSpace": "srgb",
          "components": [
            0.169,
            0.345,
            0.463
          ],
          "hex": "#2b5876"
        },
        "position": 0
      },
      {
        "color": {
          "colorSpace": "srgb",
          "components": [
            0.306,
            0.263,
            0.463
          ],
          "hex": "#4e4376"
        },
        "position": 1
      }
    ],
    "$extensions": {
      "com.brandsweets": {
        "kind": "linear",
        "css": "linear-gradient(90deg in oklab, #2b5876 0%, #4e4376 100%)",
        "interpolation": "oklab",
        "angle": 90,
        "name": "Sea Blue",
        "contrast": {
          "white": {
            "ratio": 7.596,
            "at": 0.0159,
            "passesAA": true,
            "passesAALarge": true
          },
          "black": {
            "ratio": 2.388,
            "at": 0.9841,
            "passesAA": false,
            "passesAALarge": false
          },
          "suggestedInk": "#ffffff"
        }
      }
    },
    "$description": "Sea Blue (uiGradients, MIT), rendered in OKLab."
  }
}

Tagged

Blue gradientsPurple gradientsCoolMutedDark

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 Sea Blue gradient (#2b5876, #4e4376), 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