Brand gradient
Railway gradient
The gradient Railway'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
- railway.app
- Extracted
- Version
- 6
Hero and button
Hero background
Open in maker →Chroma ×0.35 so it can carry text; ink white (inkFor at the midpoint). L shifted −0.26 until the ink passes AA at the worst point (4.55:1).
linear-gradient(135deg in oklab, #010003 0%, #8b6e7c 100%)
bg-linear-to-br/oklab from-[#010003] to-[#8b6e7c]
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. White ink passes AA on the surface and both states (worst 15.10:1).
linear-gradient(180deg in oklch shorter hue, #1a1258 0%, #0d0040 100%)
bg-linear-to-b/oklch from-[#1a1258] to-[#0d0040]
Variants
Tonal ramp
Open in maker →linear-gradient(135deg in oklch shorter hue, #393a82 0%, #13044c 50%, #010008 100%)
bg-linear-to-br/oklch from-[#393a82] via-[#13044c] to-[#010008]
Analogous
Open in maker →Partner hue from the analogous rule at the source colour's lightness.
linear-gradient(135deg in oklab, #13044c 0%, #021930 100%)
bg-linear-to-br/oklab from-[#13044c] to-[#021930]
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, #13044c 0%, #1d1802 100%)
bg-linear-to-br/oklch from-[#13044c] to-[#1d1802]
Triadic
Open in maker →Partner hue from the triadic rule at the source colour's lightness.
linear-gradient(135deg in oklab, #13044c 0%, #2f0b01 100%)
bg-linear-to-br/oklab from-[#13044c] to-[#2f0b01]
Report — brand gradient
- white ink: worst 1.81:1 at 100% (fails AA); black ink: worst 1.15:1 at 0% (fails AA) → use white text.
- Neither ink passes AA at the worst point — treat as decorative or add a scrim (rgba(0,0,0,.35) typically lifts white ink past 4:1).
- Banding medium: ~6px bands at 1440px — add grain 11 (≈1% 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 1.81:1, black 1.15:1 */
--brand-gradient: linear-gradient(135deg in oklab, #13044c 0%, #f9a8d4 100%);
/* hero — worst-case contrast: white 4.55:1 AA, black 1.00:1; ink passes AA at the worst point */
--brand-gradient-hero: linear-gradient(135deg in oklab, #010003 0%, #8b6e7c 100%);
--brand-gradient-hero-ink: #ffffff;
/* button — worst-case contrast: white 16.52:1 AA, black 1.09:1 */
--brand-gradient-button: linear-gradient(180deg in oklch shorter hue, #1a1258 0%, #0d0040 100%);
--brand-gradient-button-hover: linear-gradient(180deg in oklch shorter hue, #201b61 0%, #110149 100%);
--brand-gradient-button-active: linear-gradient(180deg in oklch shorter hue, #15074f 0%, #080033 100%);
--brand-gradient-button-ink: #ffffff;
}<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="#13044c"/><stop offset="7.14%" stop-color="#1f1356"/><stop offset="14.29%" stop-color="#2c1f60"/><stop offset="21.43%" stop-color="#3a2b69"/><stop offset="28.57%" stop-color="#493673"/><stop offset="35.71%" stop-color="#59417d"/><stop offset="42.86%" stop-color="#694c86"/><stop offset="50%" stop-color="#795790"/><stop offset="57.14%" stop-color="#8b629a"/><stop offset="64.29%" stop-color="#9c6ea3"/><stop offset="71.43%" stop-color="#ae79ad"/><stop offset="78.57%" stop-color="#c085b7"/><stop offset="85.71%" stop-color="#d390c1"/><stop offset="92.86%" stop-color="#e69cca"/><stop offset="100%" stop-color="#f9a8d4"/></linearGradient></defs><rect width="1440" height="600" fill="url(#bs-gradient)"/></svg>
{
"gradient": {
"brand": {
"$type": "gradient",
"$value": [
{
"color": {
"colorSpace": "srgb",
"components": [
0.075,
0.016,
0.298
],
"hex": "#13044c"
},
"position": 0
},
{
"color": {
"colorSpace": "srgb",
"components": [
0.976,
0.659,
0.831
],
"hex": "#f9a8d4"
},
"position": 1
}
],
"$extensions": {
"com.brandsweets": {
"kind": "linear",
"css": "linear-gradient(135deg in oklab, #13044c 0%, #f9a8d4 100%)",
"interpolation": "oklab",
"angle": 135,
"name": "brand",
"contrast": {
"white": {
"ratio": 1.814,
"at": 1,
"passesAA": false,
"passesAALarge": false
},
"black": {
"ratio": 1.149,
"at": 0,
"passesAA": false,
"passesAALarge": false
},
"suggestedInk": "#ffffff"
}
}
},
"$description": "The canonical brand gradient (--brand-gradient)."
},
"hero": {
"$type": "gradient",
"$value": [
{
"color": {
"colorSpace": "srgb",
"components": [
0.004,
0,
0.012
],
"hex": "#010003"
},
"position": 0
},
{
"color": {
"colorSpace": "srgb",
"components": [
0.545,
0.431,
0.486
],
"hex": "#8b6e7c"
},
"position": 1
}
],
"$extensions": {
"com.brandsweets": {
"kind": "linear",
"css": "linear-gradient(135deg in oklab, #010003 0%, #8b6e7c 100%)",
"interpolation": "oklab",
"angle": 135,
"name": "hero",
"ink": "#ffffff",
"contrast": {
"white": {
"ratio": 4.546,
"at": 1,
"passesAA": true,
"passesAALarge": true
},
"black": {
"ratio": 1.003,
"at": 0,
"passesAA": false,
"passesAALarge": false
},
"suggestedInk": "#ffffff"
}
}
},
"$description": "Low-chroma hero background with a text-safe ink (--brand-gradient-hero)."
},
"button": {
"$type": "gradient",
"$value": [
{
"color": {
"colorSpace": "srgb",
"components": [
0.102,
0.071,
0.345
],
"hex": "#1a1258"
},
"position": 0
},
{
"color": {
"colorSpace": "srgb",
"components": [
0.051,
0,
0.251
],
"hex": "#0d0040"
},
"position": 1
}
],
"$extensions": {
"com.brandsweets": {
"kind": "linear",
"css": "linear-gradient(180deg in oklch shorter hue, #1a1258 0%, #0d0040 100%)",
"interpolation": "oklch",
"hue": "shorter",
"angle": 180,
"name": "button",
"ink": "#ffffff",
"states": {
"hover": "linear-gradient(180deg in oklch shorter hue, #201b61 0%, #110149 100%)",
"active": "linear-gradient(180deg in oklch shorter hue, #15074f 0%, #080033 100%)"
},
"contrast": {
"white": {
"ratio": 16.518,
"at": 0,
"passesAA": true,
"passesAALarge": true
},
"black": {
"ratio": 1.091,
"at": 0.9841,
"passesAA": false,
"passesAALarge": false
},
"suggestedInk": "#ffffff"
}
}
},
"$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 railway-app — give me the hero CSS and the ink that passes AA, then a version in oklch
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Railway 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 Railway. Owner of this brand? Request a correction or removal → Machine-readable: gradients.md