Brand gradient
Anthropic gradient
The gradient Anthropic's published colour tokens imply, derived by a pure function of the palette: primary → secondary in OKLab (OKLCH shorter hue when the hues are more than 140° apart; a tonal ramp when they are within ΔE 0.15), then a hero background with an ink that passes AA at the worst point along the line, a button surface with hover and active states, and the variant contact sheet. Same inputs, same gradients, forever — which is what makes them citable; the same values are served as --brand-gradient in the brand's brand.css.
- Source
- anthropic.com
- Extracted
- Version
- 4
Hero and button
Hero background
Open in maker →Chroma ×0.35 so it can carry text; ink black (inkFor at the midpoint). Passes AA for that ink at the worst point (6.98:1) without adjusting L.
linear-gradient(135deg in oklab, #b08d82 0%, #dedbd6 100%)
bg-linear-to-br/oklab from-[#b08d82] to-[#dedbd6]
Button / CTA
Open in maker →ΔL 0.08 top→bottom in the primary's hue (a lit surface, not a rainbow); hover L +0.03, active L −0.03. L shifted −0.10 so white ink gets as close as the ±0.1 bound allows to AA on the surface and both states (worst 3.50:1). Ink is below AA (3.50:1 at the worst point) — use it for large text only, or pick a darker/lighter primary for buttons.
linear-gradient(180deg in oklch shorter hue, #c56545 0%, #aa4d2d 100%)
bg-linear-to-b/oklch from-[#c56545] to-[#aa4d2d]
Variants
Tonal ramp
Open in maker →linear-gradient(135deg in oklch shorter hue, #ffb69b 0%, #d97757 50%, #9d4121 100%)
bg-linear-to-br/oklch from-[#ffb69b] via-[#d97757] to-[#9d4121]
Analogous
Open in maker →Partner hue from the analogous rule at the source colour's lightness.
linear-gradient(135deg in oklab, #d97757 0%, #db6f85 100%)
bg-linear-to-br/oklab from-[#d97757] to-[#db6f85]
Complementary
Open in maker →Partner hue from the complementary rule at the source colour's lightness. ΔH 179° > 140° — interpolating in oklch (shorter hue) keeps the midpoint saturated.
linear-gradient(135deg in oklch shorter hue, #d97757 0%, #5fa1b5 100%)
bg-linear-to-br/oklch from-[#d97757] to-[#5fa1b5]
Triadic
Open in maker →Partner hue from the triadic rule at the source colour's lightness.
linear-gradient(135deg in oklab, #d97757 0%, #60a881 100%)
bg-linear-to-br/oklab from-[#d97757] to-[#60a881]
Report — brand gradient
- white ink: worst 1.39:1 at 100% (fails AA); black ink: worst 6.73:1 at 0% (AA) → use black text.
- Banding medium: ~12px bands at 1440px — add grain 26 (≈2% soft-light noise) or shorten the ramp.
Export
The custom properties below are byte-identical to the gradient block in brand.css; the DTCG token is what tokens.json carries.
:root {
/* Brand gradient (derived) */
/* worst-case contrast: white 1.39:1, black 6.73:1 AA */
--brand-gradient: linear-gradient(135deg in oklab, #d97757 0%, #e3dacc 100%);
/* hero — worst-case contrast: white 1.38:1, black 6.98:1 AA; ink passes AA at the worst point */
--brand-gradient-hero: linear-gradient(135deg in oklab, #b08d82 0%, #dedbd6 100%);
--brand-gradient-hero-ink: #000000;
/* button — worst-case contrast: white 3.95:1 AA-large, black 3.81:1 AA-large */
--brand-gradient-button: linear-gradient(180deg in oklch shorter hue, #c56545 0%, #aa4d2d 100%);
--brand-gradient-button-hover: linear-gradient(180deg in oklch shorter hue, #cf6e4e 0%, #b45636 100%);
--brand-gradient-button-active: linear-gradient(180deg in oklch shorter hue, #ba5c3c 0%, #a04424 100%);
--brand-gradient-button-ink: #ffffff;
/* button ink: 3.5:1 — below AA */
}<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="#d97757"/><stop offset="7.14%" stop-color="#db7e60"/><stop offset="14.29%" stop-color="#dc8668"/><stop offset="21.43%" stop-color="#dd8d70"/><stop offset="28.57%" stop-color="#de9479"/><stop offset="35.71%" stop-color="#df9b81"/><stop offset="42.86%" stop-color="#e0a289"/><stop offset="50%" stop-color="#e1a992"/><stop offset="57.14%" stop-color="#e2b09a"/><stop offset="64.29%" stop-color="#e2b7a2"/><stop offset="71.43%" stop-color="#e3beab"/><stop offset="78.57%" stop-color="#e3c5b3"/><stop offset="85.71%" stop-color="#e3ccbb"/><stop offset="92.86%" stop-color="#e3d3c4"/><stop offset="100%" stop-color="#e3dacc"/></linearGradient></defs><rect width="1440" height="600" fill="url(#bs-gradient)"/></svg>
{
"gradient": {
"brand": {
"$type": "gradient",
"$value": [
{
"color": {
"colorSpace": "srgb",
"components": [
0.851,
0.467,
0.341
],
"hex": "#d97757"
},
"position": 0
},
{
"color": {
"colorSpace": "srgb",
"components": [
0.89,
0.855,
0.8
],
"hex": "#e3dacc"
},
"position": 1
}
],
"$extensions": {
"com.brandsweets": {
"kind": "linear",
"css": "linear-gradient(135deg in oklab, #d97757 0%, #e3dacc 100%)",
"interpolation": "oklab",
"angle": 135,
"name": "brand",
"contrast": {
"white": {
"ratio": 1.385,
"at": 1,
"passesAA": false,
"passesAALarge": false
},
"black": {
"ratio": 6.727,
"at": 0,
"passesAA": true,
"passesAALarge": true
},
"suggestedInk": "#000000"
}
}
},
"$description": "The canonical brand gradient (--brand-gradient)."
},
"hero": {
"$type": "gradient",
"$value": [
{
"color": {
"colorSpace": "srgb",
"components": [
0.69,
0.553,
0.51
],
"hex": "#b08d82"
},
"position": 0
},
{
"color": {
"colorSpace": "srgb",
"components": [
0.871,
0.859,
0.839
],
"hex": "#dedbd6"
},
"position": 1
}
],
"$extensions": {
"com.brandsweets": {
"kind": "linear",
"css": "linear-gradient(135deg in oklab, #b08d82 0%, #dedbd6 100%)",
"interpolation": "oklab",
"angle": 135,
"name": "hero",
"ink": "#000000",
"contrast": {
"white": {
"ratio": 1.381,
"at": 1,
"passesAA": false,
"passesAALarge": false
},
"black": {
"ratio": 6.978,
"at": 0,
"passesAA": true,
"passesAALarge": true
},
"suggestedInk": "#000000"
}
}
},
"$description": "Low-chroma hero background with a text-safe ink (--brand-gradient-hero)."
},
"button": {
"$type": "gradient",
"$value": [
{
"color": {
"colorSpace": "srgb",
"components": [
0.773,
0.396,
0.271
],
"hex": "#c56545"
},
"position": 0
},
{
"color": {
"colorSpace": "srgb",
"components": [
0.667,
0.302,
0.176
],
"hex": "#aa4d2d"
},
"position": 1
}
],
"$extensions": {
"com.brandsweets": {
"kind": "linear",
"css": "linear-gradient(180deg in oklch shorter hue, #c56545 0%, #aa4d2d 100%)",
"interpolation": "oklch",
"hue": "shorter",
"angle": 180,
"name": "button",
"ink": "#ffffff",
"states": {
"hover": "linear-gradient(180deg in oklch shorter hue, #cf6e4e 0%, #b45636 100%)",
"active": "linear-gradient(180deg in oklch shorter hue, #ba5c3c 0%, #a04424 100%)"
},
"contrast": {
"white": {
"ratio": 3.946,
"at": 0,
"passesAA": false,
"passesAALarge": true
},
"black": {
"ratio": 3.809,
"at": 0.9841,
"passesAA": false,
"passesAALarge": true
},
"suggestedInk": "#ffffff"
}
}
},
"$description": "Button / CTA surface with hover and active states (--brand-gradient-button)."
}
}
}Colours
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
›brand_gradients for anthropic — give me the hero CSS and the ink that passes AA, then a version in oklch
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Anthropic and its marks belong to their owner. This page uses the name nominatively to describe gradients derived from the brand's published colour values; it does not reproduce logos or other brand assets, and it is not affiliated with or endorsed by Anthropic. Owner of this brand? Request a correction or removal → Machine-readable: gradients.md