Colour to colour

Fuchsia to Medium Sea Green gradient

Fuchsia (#ff00ff) into Medium Sea Green (#3cb371) — 173° apart on the OKLCH hue wheel. Below: the same two stops interpolated in OKLab and in OKLCH, side by side, because the difference is real and most generators never let you see it; then an eased version and a mesh, each with the worst-case contrast for white and black text. The engine's own pick for this pair is oklch: ΔH 173° > 140° — interpolating in oklch (shorter hue) keeps the midpoint saturated.

Fuchsia → Medium Sea Green
black text · worst 6.52:1 · AA
white 2.54 failsblack 6.52 AAbanding medium

OKLab and OKLCH, side by side

Aa

A straight line through the a/b plane: the two hues meet halfway and desaturate a little at the midpoint. The safe default — it is what CSS and Tailwind default to.

white 2.65 failsblack 6.68 AAbanding medium
css
linear-gradient(135deg in oklab, #ff00ff 0%, #3cb371 100%)
Aa

OKLCH (shorter hue)

Open in maker →

Chroma and hue interpolate separately, so the midpoint keeps its saturation and the hue travels the short way round the wheel — richer, and it can pass through hues neither colour has.

white 2.54 failsblack 6.52 AAbanding medium
css
linear-gradient(135deg in oklch shorter hue, #ff00ff 0%, #3cb371 100%)

And the sRGB line most tools draw, for comparison — the number is the chroma that survives at the dullest point.

sRGB15%
OKLab5%
OKLCH51%

Eased and mesh

Aa

Eased (soft)

Open in maker →

A cubic-bezier(.4, 0, .6, 1) mix ratio baked into 15 stops: the transition lingers on each colour and moves faster through the middle, which is what makes a gradient read as designed rather than default.

white 2.54 failsblack 6.52 AAbanding medium
css
linear-gradient(135deg in oklch shorter hue, #ff00ff 0%, #fa16ff 8.28%, #e545ff 16.03%, #c769ff 23.35%, #a77eff 30.32%, #858dff 37.03%, #5599ff 43.56%, #00a6ff 50%, #00aedf 56.44%, #00b2c4 62.97%, #00b5ad 69.68%, #00b796 76.65%, #00b781 83.97%, #2fb475 91.72%, #3cb371 100%)
Aa

Both colours as stacked radials over a base, laid out by a seeded Poisson-disc sampler — the same seed gives the same mesh forever. Exports as CSS, SVG and PNG.

white 2.86 failsblack 5.89 AAbanding high
css
background-color: #b889bd;
background-image: radial-gradient(circle farthest-corner at 84.34% 96.22%, rgba(255, 0, 255, 0.841) 0%, rgba(255, 0, 255, 0) 54.64%), radial-gradient(circle farthest-corner at 17.58% 55.16%, rgba(60, 179, 113, 0.762) 0%, rgba(60, 179, 113, 0) 49.03%);
background-image: radial-gradient(circle farthest-corner at 84.34% 96.22%, oklch(from #ff00ff l c h / 0.8411) 0%, rgb(from #ff00ff r g b / 0) 54.64%), radial-gradient(circle farthest-corner at 17.58% 55.16%, oklch(from #3cb371 l c h / 0.762) 0%, rgb(from #3cb371 r g b / 0) 49.03%);

Report

  • white ink: worst 2.54:1 at 90% (fails AA); black ink: worst 6.52:1 at 3% (AA) → use black text.
  • Banding medium: ~7px bands at 1440px — add grain 14 (≈2% soft-light noise) or shorten the ramp.
  • 57/64 samples left sRGB by more than 5% and were gamut-mapped (oklch shorter); expect slight hue drift there.

Export

css
.gradient {
  background-image: linear-gradient(135deg, #ff00ff 0%, #dd52ff 7.14%, #bd71ff 14.29%, #a281ff 21.43%, #878cff 28.57%, #6995ff 35.71%, #399dff 42.86%, #00a6ff 50%, #00acea 57.14%, #00b0d5 64.29%, #00b2c2 71.43%, #00b4b1 78.57%, #00b69d 85.71%, #00b786 92.86%, #3cb371 100%);
  background-image: linear-gradient(135deg in oklch shorter hue, #ff00ff 0%, #3cb371 100%);
}
tailwind v4
bg-linear-to-br/oklch from-[#ff00ff] to-[#3cb371]
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="210" y1="-210" x2="1230" y2="810"><stop offset="0%" stop-color="#ff00ff"/><stop offset="7.14%" stop-color="#dd52ff"/><stop offset="14.29%" stop-color="#bd71ff"/><stop offset="21.43%" stop-color="#a281ff"/><stop offset="28.57%" stop-color="#878cff"/><stop offset="35.71%" stop-color="#6995ff"/><stop offset="42.86%" stop-color="#399dff"/><stop offset="50%" stop-color="#00a6ff"/><stop offset="57.14%" stop-color="#00acea"/><stop offset="64.29%" stop-color="#00b0d5"/><stop offset="71.43%" stop-color="#00b2c2"/><stop offset="78.57%" stop-color="#00b4b1"/><stop offset="85.71%" stop-color="#00b69d"/><stop offset="92.86%" stop-color="#00b786"/><stop offset="100%" stop-color="#3cb371"/></linearGradient></defs><rect width="1440" height="600" fill="url(#bs-gradient)"/></svg>
dtcg
{
  "fuchsia-to-mediumseagreen": {
    "$type": "gradient",
    "$value": [
      {
        "color": {
          "colorSpace": "srgb",
          "components": [
            1,
            0,
            1
          ],
          "hex": "#ff00ff"
        },
        "position": 0
      },
      {
        "color": {
          "colorSpace": "srgb",
          "components": [
            0.235,
            0.702,
            0.443
          ],
          "hex": "#3cb371"
        },
        "position": 1
      }
    ],
    "$extensions": {
      "com.brandsweets": {
        "kind": "linear",
        "css": "linear-gradient(135deg in oklch shorter hue, #ff00ff 0%, #3cb371 100%)",
        "interpolation": "oklch",
        "hue": "shorter",
        "angle": 135,
        "name": "fuchsia-to-mediumseagreen",
        "contrast": {
          "white": {
            "ratio": 2.543,
            "at": 0.9004,
            "passesAA": false,
            "passesAALarge": false
          },
          "black": {
            "ratio": 6.523,
            "at": 0.034,
            "passesAA": true,
            "passesAALarge": true
          },
          "suggestedInk": "#000000"
        }
      }
    },
    "$description": "Fuchsia to Medium Sea Green, interpolated in oklch."
  }
}

More from Fuchsia

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

make a fuchsia to medium sea green hero gradient in oklch that passes AA for white text, with grain if it bands

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: gradients.md