Colour to colour
Indigo to Olive Green gradient
Indigo (#4b0082) into Olive Green (#808000) — 168° 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 168° > 140° — interpolating in oklch (shorter hue) keeps the midpoint saturated.
OKLab and OKLCH, side by side
OKLab
Open in maker →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.
linear-gradient(135deg in oklab, #4b0082 0%, #808000 100%)
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.
linear-gradient(135deg in oklch shorter hue, #4b0082 0%, #808000 100%)
And the sRGB line most tools draw, for comparison — the number is the chroma that survives at the dullest point.
Eased and mesh
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.
linear-gradient(135deg in oklch shorter hue, #4b0082 0%, #4e0081 8.28%, #58017c 16.03%, #650274 23.35%, #750467 30.32%, #850955 37.03%, #921640 43.56%, #9b2727 50%, #9f3a00 56.44%, #9d4e00 62.97%, #965f00 69.68%, #906d00 76.65%, #887700 83.97%, #827e00 91.72%, #808000 100%)
Mesh
Open in maker →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.
background-color: #615261; background-image: radial-gradient(circle farthest-corner at 10.32% 64.4%, rgba(75, 0, 130, 0.827) 0%, rgba(75, 0, 130, 0) 50.35%), radial-gradient(circle farthest-corner at 48.46% 5.32%, rgba(128, 128, 0, 0.731) 0%, rgba(128, 128, 0, 0) 58.77%); background-image: radial-gradient(circle farthest-corner at 10.32% 64.4%, oklch(from #4b0082 l c h / 0.8268) 0%, rgb(from #4b0082 r g b / 0) 50.35%), radial-gradient(circle farthest-corner at 48.46% 5.32%, oklch(from #808000 l c h / 0.7307) 0%, rgb(from #808000 r g b / 0) 58.77%);
Report
- white ink: worst 4.20:1 at 100% (AA-large only); black ink: worst 1.62:1 at 0% (fails AA) → use white text.
- Body text fails AA everywhere on this gradient; large text (≥24px / 19px bold) is fine. Add a scrim or lower the chroma for body copy.
- Banding medium: ~11px bands at 1440px — add grain 23 (≈2% soft-light noise) or shorten the ramp.
Export
.gradient {
background-image: linear-gradient(135deg, #4b0082 0%, #5b017a 7.14%, #6a0370 14.29%, #780464 21.43%, #840956 28.57%, #8e1148 35.71%, #961b38 42.86%, #9b2727 50%, #9f340c 57.14%, #9f4100 64.29%, #9d4f00 71.43%, #985d00 78.57%, #926900 85.71%, #8a7500 92.86%, #808000 100%);
background-image: linear-gradient(135deg in oklch shorter hue, #4b0082 0%, #808000 100%);
}bg-linear-to-br/oklch from-[#4b0082] to-[#808000]
<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="#4b0082"/><stop offset="7.14%" stop-color="#5b017a"/><stop offset="14.29%" stop-color="#6a0370"/><stop offset="21.43%" stop-color="#780464"/><stop offset="28.57%" stop-color="#840956"/><stop offset="35.71%" stop-color="#8e1148"/><stop offset="42.86%" stop-color="#961b38"/><stop offset="50%" stop-color="#9b2727"/><stop offset="57.14%" stop-color="#9f340c"/><stop offset="64.29%" stop-color="#9f4100"/><stop offset="71.43%" stop-color="#9d4f00"/><stop offset="78.57%" stop-color="#985d00"/><stop offset="85.71%" stop-color="#926900"/><stop offset="92.86%" stop-color="#8a7500"/><stop offset="100%" stop-color="#808000"/></linearGradient></defs><rect width="1440" height="600" fill="url(#bs-gradient)"/></svg>
{
"indigo-to-olive": {
"$type": "gradient",
"$value": [
{
"color": {
"colorSpace": "srgb",
"components": [
0.294,
0,
0.51
],
"hex": "#4b0082"
},
"position": 0
},
{
"color": {
"colorSpace": "srgb",
"components": [
0.502,
0.502,
0
],
"hex": "#808000"
},
"position": 1
}
],
"$extensions": {
"com.brandsweets": {
"kind": "linear",
"css": "linear-gradient(135deg in oklch shorter hue, #4b0082 0%, #808000 100%)",
"interpolation": "oklch",
"hue": "shorter",
"angle": 135,
"name": "indigo-to-olive",
"contrast": {
"white": {
"ratio": 4.195,
"at": 1,
"passesAA": false,
"passesAALarge": true
},
"black": {
"ratio": 1.622,
"at": 0,
"passesAA": false,
"passesAALarge": false
},
"suggestedInk": "#ffffff"
}
}
},
"$description": "Indigo to Olive Green, interpolated in oklch."
}
}More from Indigo
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.
https://mcp.brandsweets.com/gradients/mcpclaude mcp add --transport http brandsweets-gradients https://mcp.brandsweets.com/gradients/mcp
›make a indigo to olive 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