Colour to colour

Periwinkle to Dark Khaki gradient

Periwinkle (#ccccff) into Dark Khaki (#bdb76b) — 180° 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 180° > 140° — interpolating in oklch (shorter hue) keeps the midpoint saturated.

Periwinkle → Dark Khaki
black text · worst 10.14:1 · AA
white 1.53 failsblack 10.14 AAbanding high

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 1.54 failsblack 10.15 AAbanding high
css
linear-gradient(135deg in oklab, #ccccff 0%, #bdb76b 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 1.53 failsblack 10.14 AAbanding high
css
linear-gradient(135deg in oklch shorter hue, #ccccff 0%, #bdb76b 100%)

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

sRGB3%
OKLab2%
OKLCH84%

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 1.53 failsblack 10.14 AAbanding high
css
linear-gradient(135deg in oklch shorter hue, #ccccff 0%, #cecbfe 8.28%, #d3c7fb 16.03%, #dac2f5 23.35%, #e3bceb 30.32%, #ebb6db 37.03%, #f1b0c8 43.56%, #f4acb1 50%, #f2ab9a 56.44%, #ebac86 62.97%, #e1af77 69.68%, #d4b26e 76.65%, #c9b56b 83.97%, #c0b66b 91.72%, #bdb76b 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 1.74 failsblack 10.66 AAbanding high
css
background-color: #c4c3b9;
background-image: radial-gradient(circle farthest-corner at 11.33% 13.11%, rgba(189, 183, 107, 0.728) 0%, rgba(189, 183, 107, 0) 56.97%), radial-gradient(circle farthest-corner at 52.91% 20.06%, rgba(204, 204, 255, 0.738) 0%, rgba(204, 204, 255, 0) 55.04%);
background-image: radial-gradient(circle farthest-corner at 11.33% 13.11%, oklch(from #bdb76b l c h / 0.7275) 0%, rgb(from #bdb76b r g b / 0) 56.97%), radial-gradient(circle farthest-corner at 52.91% 20.06%, oklch(from #ccccff l c h / 0.7379) 0%, rgb(from #ccccff r g b / 0) 55.04%);

Report

  • white ink: worst 1.53:1 at 1% (fails AA); black ink: worst 10.14:1 at 98% (AA) → use black text.
  • Banding high: ~10px bands at 1440px — add grain 20 (≈2% soft-light noise) or shorten the ramp.

Export

css
.gradient {
  background-image: linear-gradient(135deg, #ccccff 0%, #d4c6fa 7.14%, #ddc0f2 14.29%, #e4bbe8 21.43%, #eab6dc 28.57%, #efb2cf 35.71%, #f3afc0 42.86%, #f4acb1 50%, #f3aba2 57.14%, #f0ab93 64.29%, #eaac85 71.43%, #e3ae79 78.57%, #d8b171 85.71%, #ccb46c 92.86%, #bdb76b 100%);
  background-image: linear-gradient(135deg in oklch shorter hue, #ccccff 0%, #bdb76b 100%);
}
tailwind v4
bg-linear-to-br/oklch from-[#ccccff] to-[#bdb76b]
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="#ccccff"/><stop offset="7.14%" stop-color="#d4c6fa"/><stop offset="14.29%" stop-color="#ddc0f2"/><stop offset="21.43%" stop-color="#e4bbe8"/><stop offset="28.57%" stop-color="#eab6dc"/><stop offset="35.71%" stop-color="#efb2cf"/><stop offset="42.86%" stop-color="#f3afc0"/><stop offset="50%" stop-color="#f4acb1"/><stop offset="57.14%" stop-color="#f3aba2"/><stop offset="64.29%" stop-color="#f0ab93"/><stop offset="71.43%" stop-color="#eaac85"/><stop offset="78.57%" stop-color="#e3ae79"/><stop offset="85.71%" stop-color="#d8b171"/><stop offset="92.86%" stop-color="#ccb46c"/><stop offset="100%" stop-color="#bdb76b"/></linearGradient></defs><rect width="1440" height="600" fill="url(#bs-gradient)"/></svg>
dtcg
{
  "periwinkle-to-darkkhaki": {
    "$type": "gradient",
    "$value": [
      {
        "color": {
          "colorSpace": "srgb",
          "components": [
            0.8,
            0.8,
            1
          ],
          "hex": "#ccccff"
        },
        "position": 0
      },
      {
        "color": {
          "colorSpace": "srgb",
          "components": [
            0.741,
            0.718,
            0.42
          ],
          "hex": "#bdb76b"
        },
        "position": 1
      }
    ],
    "$extensions": {
      "com.brandsweets": {
        "kind": "linear",
        "css": "linear-gradient(135deg in oklch shorter hue, #ccccff 0%, #bdb76b 100%)",
        "interpolation": "oklch",
        "hue": "shorter",
        "angle": 135,
        "name": "periwinkle-to-darkkhaki",
        "contrast": {
          "white": {
            "ratio": 1.535,
            "at": 0.006,
            "passesAA": false,
            "passesAALarge": false
          },
          "black": {
            "ratio": 10.145,
            "at": 0.9841,
            "passesAA": true,
            "passesAALarge": true
          },
          "suggestedInk": "#000000"
        }
      }
    },
    "$description": "Periwinkle to Dark Khaki, interpolated in oklch."
  }
}

More from Periwinkle

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 periwinkle to dark khaki 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