Colour to colour

Amber to Cornflower Blue gradient

Amber (#ffbf00) into Cornflower Blue (#6495ed) — 177° 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 177° > 140° — interpolating in oklch (shorter hue) keeps the midpoint saturated.

Amber → Cornflower Blue
black text · worst 7.06:1 · AA
white 1.65 failsblack 7.06 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 1.65 failsblack 7.06 AAbanding medium
css
linear-gradient(135deg in oklab, #ffbf00 0%, #6495ed 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 1.65 failsblack 7.06 AAbanding medium
css
linear-gradient(135deg in oklch shorter hue, #ffbf00 0%, #6495ed 100%)

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

sRGB9%
OKLab2%
OKLCH80%

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 1.65 failsblack 7.05 AAbanding medium
css
linear-gradient(135deg in oklch shorter hue, #ffbf00 0%, #fac000 8.28%, #ecc400 16.03%, #d5c91d 23.35%, #b5ce3f 30.32%, #8ad262 37.03%, #50d385 43.56%, #00cfa6 50%, #00c7c2 56.44%, #00bdd7 62.97%, #00b2e6 69.68%, #2ea6ed 76.65%, #4f9dee 83.97%, #5f97ee 91.72%, #6495ed 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 2.14 failsblack 8.44 AAbanding high
css
background-color: #b3b0a5;
background-image: radial-gradient(circle farthest-corner at 35.2% 87.14%, rgba(255, 191, 0, 0.728) 0%, rgba(255, 191, 0, 0) 52.24%), radial-gradient(circle farthest-corner at 85.83% 59.32%, rgba(100, 149, 237, 0.884) 0%, rgba(100, 149, 237, 0) 50.99%);
background-image: radial-gradient(circle farthest-corner at 35.2% 87.14%, oklch(from #ffbf00 l c h / 0.7282) 0%, rgb(from #ffbf00 r g b / 0) 52.24%), radial-gradient(circle farthest-corner at 85.83% 59.32%, oklch(from #6495ed l c h / 0.8842) 0%, rgb(from #6495ed r g b / 0) 50.99%);

Report

  • white ink: worst 1.65:1 at 1% (fails AA); black ink: worst 7.06:1 at 100% (AA) → use black text.
  • Banding medium: ~6px bands at 1440px — add grain 11 (≈1% soft-light noise) or shorten the ramp.
  • 14/64 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, #ffbf00 0%, #e7c504 7.14%, #cccb28 14.29%, #aecf45 21.43%, #8cd260 28.57%, #67d379 35.71%, #36d290 42.86%, #00cfa6 50%, #00caba 57.14%, #00c3c9 64.29%, #00bcd8 71.43%, #00b4e4 78.57%, #18aaec 85.71%, #48a0ee 92.86%, #6495ed 100%);
  background-image: linear-gradient(135deg in oklch shorter hue, #ffbf00 0%, #6495ed 100%);
}
tailwind v4
bg-linear-to-br/oklch from-[#ffbf00] to-[#6495ed]
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="#ffbf00"/><stop offset="7.14%" stop-color="#e7c504"/><stop offset="14.29%" stop-color="#cccb28"/><stop offset="21.43%" stop-color="#aecf45"/><stop offset="28.57%" stop-color="#8cd260"/><stop offset="35.71%" stop-color="#67d379"/><stop offset="42.86%" stop-color="#36d290"/><stop offset="50%" stop-color="#00cfa6"/><stop offset="57.14%" stop-color="#00caba"/><stop offset="64.29%" stop-color="#00c3c9"/><stop offset="71.43%" stop-color="#00bcd8"/><stop offset="78.57%" stop-color="#00b4e4"/><stop offset="85.71%" stop-color="#18aaec"/><stop offset="92.86%" stop-color="#48a0ee"/><stop offset="100%" stop-color="#6495ed"/></linearGradient></defs><rect width="1440" height="600" fill="url(#bs-gradient)"/></svg>
dtcg
{
  "amber-to-cornflowerblue": {
    "$type": "gradient",
    "$value": [
      {
        "color": {
          "colorSpace": "srgb",
          "components": [
            1,
            0.749,
            0
          ],
          "hex": "#ffbf00"
        },
        "position": 0
      },
      {
        "color": {
          "colorSpace": "srgb",
          "components": [
            0.392,
            0.584,
            0.929
          ],
          "hex": "#6495ed"
        },
        "position": 1
      }
    ],
    "$extensions": {
      "com.brandsweets": {
        "kind": "linear",
        "css": "linear-gradient(135deg in oklch shorter hue, #ffbf00 0%, #6495ed 100%)",
        "interpolation": "oklch",
        "hue": "shorter",
        "angle": 135,
        "name": "amber-to-cornflowerblue",
        "contrast": {
          "white": {
            "ratio": 1.651,
            "at": 0.0077,
            "passesAA": false,
            "passesAALarge": false
          },
          "black": {
            "ratio": 7.064,
            "at": 1,
            "passesAA": true,
            "passesAALarge": true
          },
          "suggestedInk": "#000000"
        }
      }
    },
    "$description": "Amber to Cornflower Blue, interpolated in oklch."
  }
}

More from Amber

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 amber to cornflower blue 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