Colour to colour · generated
Sienna to Royal Blue gradient
Sienna (#a0522d) into Royal Blue (#4169e1) — 138° 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 oklab — both colours are in the palette and the hue gap is small enough that the straight line stays clean.
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, #a0522d 0%, #4169e1 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, #a0522d 0%, #4169e1 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 oklab, #a0522d 0%, #9f5331 8.28%, #9c553b 16.03%, #975949 23.35%, #915d59 30.32%, #89606b 37.03%, #80647c 43.56%, #77678f 50%, #6d69a0 56.44%, #636ab1 62.97%, #596ac0 69.68%, #506ace 76.65%, #486ad8 83.97%, #4369df 91.72%, #4169e1 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: #77678f; background-image: radial-gradient(circle farthest-corner at 14.83% 14.14%, rgba(65, 105, 225, 0.807) 0%, rgba(65, 105, 225, 0) 46.67%), radial-gradient(circle farthest-corner at 97.31% 45.75%, rgba(160, 82, 45, 0.793) 0%, rgba(160, 82, 45, 0) 53.05%); background-image: radial-gradient(circle farthest-corner at 14.83% 14.14%, oklch(from #4169e1 l c h / 0.8065) 0%, rgb(from #4169e1 r g b / 0) 46.67%), radial-gradient(circle farthest-corner at 97.31% 45.75%, oklch(from #a0522d l c h / 0.7928) 0%, rgb(from #a0522d r g b / 0) 53.05%);
Report
- white ink: worst 4.84:1 at 96% (AA); black ink: worst 3.74:1 at 0% (AA-large only) → use white text.
- Banding medium: ~8px bands at 1440px — add grain 16 (≈2% soft-light noise) or shorten the ramp.
Export
.gradient {
background-image: linear-gradient(135deg, #a0522d 0%, #9b563f 7.14%, #955a4f 14.29%, #8f5d5c 21.43%, #8a606a 28.57%, #846376 35.71%, #7d6582 42.86%, #77678f 50%, #71689a 57.14%, #6a69a6 64.29%, #636ab2 71.43%, #5b6abe 78.57%, #536aca 85.71%, #4a6ad5 92.86%, #4169e1 100%);
background-image: linear-gradient(135deg in oklab, #a0522d 0%, #4169e1 100%);
}bg-linear-to-br/oklab from-[#a0522d] to-[#4169e1]
<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="#a0522d"/><stop offset="7.14%" stop-color="#9b563f"/><stop offset="14.29%" stop-color="#955a4f"/><stop offset="21.43%" stop-color="#8f5d5c"/><stop offset="28.57%" stop-color="#8a606a"/><stop offset="35.71%" stop-color="#846376"/><stop offset="42.86%" stop-color="#7d6582"/><stop offset="50%" stop-color="#77678f"/><stop offset="57.14%" stop-color="#71689a"/><stop offset="64.29%" stop-color="#6a69a6"/><stop offset="71.43%" stop-color="#636ab2"/><stop offset="78.57%" stop-color="#5b6abe"/><stop offset="85.71%" stop-color="#536aca"/><stop offset="92.86%" stop-color="#4a6ad5"/><stop offset="100%" stop-color="#4169e1"/></linearGradient></defs><rect width="1440" height="600" fill="url(#bs-gradient)"/></svg>
{
"sienna-to-royalblue": {
"$type": "gradient",
"$value": [
{
"color": {
"colorSpace": "srgb",
"components": [
0.627,
0.322,
0.176
],
"hex": "#a0522d"
},
"position": 0
},
{
"color": {
"colorSpace": "srgb",
"components": [
0.255,
0.412,
0.882
],
"hex": "#4169e1"
},
"position": 1
}
],
"$extensions": {
"com.brandsweets": {
"kind": "linear",
"css": "linear-gradient(135deg in oklab, #a0522d 0%, #4169e1 100%)",
"interpolation": "oklab",
"angle": 135,
"name": "sienna-to-royalblue",
"contrast": {
"white": {
"ratio": 4.837,
"at": 0.9588,
"passesAA": true,
"passesAALarge": true
},
"black": {
"ratio": 3.74,
"at": 0,
"passesAA": false,
"passesAALarge": true
},
"suggestedInk": "#ffffff"
}
}
},
"$description": "Sienna to Royal Blue, interpolated in oklab."
}
}More from Sienna
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 sienna to royal 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