Colour to colour · generated
Royal Blue to Olive Green gradient
Royal Blue (#4169e1) into Olive Green (#808000) — 157° 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 157° > 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, #4169e1 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, #4169e1 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, #4169e1 0%, #3a6be0 8.28%, #1d70de 16.03%, #0078d8 23.35%, #0080be 30.32%, #0085a9 37.03%, #008997 43.56%, #008d85 50%, #00906e 56.44%, #009152 62.97%, #458d39 69.68%, #628824 76.65%, #738411 83.97%, #7d8104 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: #5d7d8d; background-image: radial-gradient(circle farthest-corner at 87.86% 84.34%, rgba(65, 105, 225, 0.73) 0%, rgba(65, 105, 225, 0) 49.07%), radial-gradient(circle farthest-corner at 78.12% 12.34%, rgba(128, 128, 0, 0.79) 0%, rgba(128, 128, 0, 0) 57.87%); background-image: radial-gradient(circle farthest-corner at 87.86% 84.34%, oklch(from #4169e1 l c h / 0.7301) 0%, rgb(from #4169e1 r g b / 0) 49.07%), radial-gradient(circle farthest-corner at 78.12% 12.34%, oklch(from #808000 l c h / 0.79) 0%, rgb(from #808000 r g b / 0) 57.87%);
Report
- white ink: worst 3.97:1 at 64% (AA-large only); black ink: worst 4.33:1 at 0% (AA-large only) → use black 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: ~6px bands at 1440px — add grain 12 (≈1% soft-light noise) or shorten the ramp.
- 29/64 samples left sRGB by more than 5% and were gamut-mapped (oklch shorter); expect slight hue drift there.
Export
.gradient {
background-image: linear-gradient(135deg, #4169e1 0%, #0672dd 7.14%, #007bd0 14.29%, #0081ba 21.43%, #0085aa 28.57%, #00889d 35.71%, #008b91 42.86%, #008d85 50%, #008f76 57.14%, #009264 64.29%, #009050 71.43%, #3e8d3d 78.57%, #5a8a2a 85.71%, #6f8516 92.86%, #808000 100%);
background-image: linear-gradient(135deg in oklch shorter hue, #4169e1 0%, #808000 100%);
}bg-linear-to-br/oklch from-[#4169e1] 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="#4169e1"/><stop offset="7.14%" stop-color="#0672dd"/><stop offset="14.29%" stop-color="#007bd0"/><stop offset="21.43%" stop-color="#0081ba"/><stop offset="28.57%" stop-color="#0085aa"/><stop offset="35.71%" stop-color="#00889d"/><stop offset="42.86%" stop-color="#008b91"/><stop offset="50%" stop-color="#008d85"/><stop offset="57.14%" stop-color="#008f76"/><stop offset="64.29%" stop-color="#009264"/><stop offset="71.43%" stop-color="#009050"/><stop offset="78.57%" stop-color="#3e8d3d"/><stop offset="85.71%" stop-color="#5a8a2a"/><stop offset="92.86%" stop-color="#6f8516"/><stop offset="100%" stop-color="#808000"/></linearGradient></defs><rect width="1440" height="600" fill="url(#bs-gradient)"/></svg>
{
"royalblue-to-olive": {
"$type": "gradient",
"$value": [
{
"color": {
"colorSpace": "srgb",
"components": [
0.255,
0.412,
0.882
],
"hex": "#4169e1"
},
"position": 0
},
{
"color": {
"colorSpace": "srgb",
"components": [
0.502,
0.502,
0
],
"hex": "#808000"
},
"position": 1
}
],
"$extensions": {
"com.brandsweets": {
"kind": "linear",
"css": "linear-gradient(135deg in oklch shorter hue, #4169e1 0%, #808000 100%)",
"interpolation": "oklch",
"hue": "shorter",
"angle": 135,
"name": "royalblue-to-olive",
"contrast": {
"white": {
"ratio": 3.966,
"at": 0.6441,
"passesAA": false,
"passesAALarge": true
},
"black": {
"ratio": 4.333,
"at": 0,
"passesAA": false,
"passesAALarge": true
},
"suggestedInk": "#000000"
}
}
},
"$description": "Royal Blue to Olive Green, interpolated in oklch."
}
}More from Royal Blue
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 royal blue 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