Colour to colour
Slate Gray to Copper gradient
Slate Gray (#708090) into Copper (#b87333) — 172° 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 172° > 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, #708090 0%, #b87333 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, #708090 0%, #b87333 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, #708090 0%, #708091 8.28%, #717f94 16.03%, #757e98 23.35%, #7b7c9c 30.32%, #84799e 37.03%, #90759b 43.56%, #9e7194 50%, #aa6d87 56.44%, #b36b76 62.97%, #b96b64 69.68%, #bb6d52 76.65%, #ba7042 83.97%, #b97237 91.72%, #b87333 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: #967c69; background-image: radial-gradient(circle farthest-corner at 24.56% 42.13%, rgba(184, 115, 51, 0.803) 0%, rgba(184, 115, 51, 0) 49.61%), radial-gradient(circle farthest-corner at 62.81% 45.74%, rgba(112, 128, 144, 0.707) 0%, rgba(112, 128, 144, 0) 45.96%); background-image: radial-gradient(circle farthest-corner at 24.56% 42.13%, oklch(from #b87333 l c h / 0.8033) 0%, rgb(from #b87333 r g b / 0) 49.61%), radial-gradient(circle farthest-corner at 62.81% 45.74%, oklch(from #708090 l c h / 0.7071) 0%, rgb(from #708090 r g b / 0) 45.96%);
Report
- white ink: worst 3.79:1 at 99% (AA-large only); black ink: worst 5.17:1 at 6% (AA) → use black text.
- Banding high: ~15px bands at 1440px — add grain 32 (≈2% soft-light noise) or shorten the ramp.
Export
.gradient {
background-image: linear-gradient(135deg, #708090 0%, #727f95 7.14%, #767e9a 14.29%, #7c7c9c 21.43%, #84799e 28.57%, #8c779d 35.71%, #95749a 42.86%, #9e7194 50%, #a66f8c 57.14%, #ad6d82 64.29%, #b36b75 71.43%, #b86b67 78.57%, #ba6c57 85.71%, #ba6f46 92.86%, #b87333 100%);
background-image: linear-gradient(135deg in oklch shorter hue, #708090 0%, #b87333 100%);
}bg-linear-to-br/oklch from-[#708090] to-[#b87333]
<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="#708090"/><stop offset="7.14%" stop-color="#727f95"/><stop offset="14.29%" stop-color="#767e9a"/><stop offset="21.43%" stop-color="#7c7c9c"/><stop offset="28.57%" stop-color="#84799e"/><stop offset="35.71%" stop-color="#8c779d"/><stop offset="42.86%" stop-color="#95749a"/><stop offset="50%" stop-color="#9e7194"/><stop offset="57.14%" stop-color="#a66f8c"/><stop offset="64.29%" stop-color="#ad6d82"/><stop offset="71.43%" stop-color="#b36b75"/><stop offset="78.57%" stop-color="#b86b67"/><stop offset="85.71%" stop-color="#ba6c57"/><stop offset="92.86%" stop-color="#ba6f46"/><stop offset="100%" stop-color="#b87333"/></linearGradient></defs><rect width="1440" height="600" fill="url(#bs-gradient)"/></svg>
{
"slategray-to-copper": {
"$type": "gradient",
"$value": [
{
"color": {
"colorSpace": "srgb",
"components": [
0.439,
0.502,
0.565
],
"hex": "#708090"
},
"position": 0
},
{
"color": {
"colorSpace": "srgb",
"components": [
0.722,
0.451,
0.2
],
"hex": "#b87333"
},
"position": 1
}
],
"$extensions": {
"com.brandsweets": {
"kind": "linear",
"css": "linear-gradient(135deg in oklch shorter hue, #708090 0%, #b87333 100%)",
"interpolation": "oklch",
"hue": "shorter",
"angle": 135,
"name": "slategray-to-copper",
"contrast": {
"white": {
"ratio": 3.789,
"at": 0.9948,
"passesAA": false,
"passesAALarge": true
},
"black": {
"ratio": 5.166,
"at": 0.0578,
"passesAA": true,
"passesAALarge": true
},
"suggestedInk": "#000000"
}
}
},
"$description": "Slate Gray to Copper, interpolated in oklch."
}
}More from Slate Gray
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 slate gray to copper 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