brandsweets

Named gradient · uiGradients

YouTube

YouTube is a red gradient from uiGradients (MIT) — #e52d27 → #b31217 at 90°. Shown here interpolated in OKLab, next to the original sRGB, with the worst-case contrast for white and black text and every export.

#e52d27#b31217
Open in the makerOriginal sRGB in the maker
Aa — the quick brown fox
white text · worst 4.43:1 · AA large
white 4.43 AA largeblack 3.02 AA largebanding high

Same stops, three spaces

The source renders this in sRGB. The number is how much chroma survives at the dullest point along the line — the difference between the first bar and the others is the grey that OKLab removes.

sRGB93%
OKLab93%
OKLCH93%

Report

  • white ink: worst 4.43:1 at 0% (AA-large only); black ink: worst 3.02:1 at 100% (AA-large only) → use white 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 high: ~29px bands at 1440px — add grain 50 (≈3% soft-light noise) or shorten the ramp.

Export

css
.gradient {
  background-image: linear-gradient(90deg, #e52d27 0%, #e12b26 7.14%, #de2925 14.29%, #da2824 21.43%, #d62622 28.57%, #d32421 35.71%, #cf2220 42.86%, #cc201f 50%, #c81e1e 57.14%, #c51c1d 64.29%, #c11a1c 71.43%, #be181a 78.57%, #ba1619 85.71%, #b61418 92.86%, #b31217 100%);
  background-image: linear-gradient(90deg in oklab, #e52d27 0%, #b31217 100%);
}
tailwind v4
bg-linear-to-r/oklab from-[#e52d27] to-[#b31217]
svg
<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="0" y1="300" x2="1440" y2="300"><stop offset="0%" stop-color="#e52d27"/><stop offset="7.14%" stop-color="#e12b26"/><stop offset="14.29%" stop-color="#de2925"/><stop offset="21.43%" stop-color="#da2824"/><stop offset="28.57%" stop-color="#d62622"/><stop offset="35.71%" stop-color="#d32421"/><stop offset="42.86%" stop-color="#cf2220"/><stop offset="50%" stop-color="#cc201f"/><stop offset="57.14%" stop-color="#c81e1e"/><stop offset="64.29%" stop-color="#c51c1d"/><stop offset="71.43%" stop-color="#c11a1c"/><stop offset="78.57%" stop-color="#be181a"/><stop offset="85.71%" stop-color="#ba1619"/><stop offset="92.86%" stop-color="#b61418"/><stop offset="100%" stop-color="#b31217"/></linearGradient></defs><rect width="1440" height="600" fill="url(#bs-gradient)"/></svg>
dtcg
{
  "youtube": {
    "$type": "gradient",
    "$value": [
      {
        "color": {
          "colorSpace": "srgb",
          "components": [
            0.898,
            0.176,
            0.153
          ],
          "hex": "#e52d27"
        },
        "position": 0
      },
      {
        "color": {
          "colorSpace": "srgb",
          "components": [
            0.702,
            0.071,
            0.09
          ],
          "hex": "#b31217"
        },
        "position": 1
      }
    ],
    "$extensions": {
      "com.brandsweets": {
        "kind": "linear",
        "css": "linear-gradient(90deg in oklab, #e52d27 0%, #b31217 100%)",
        "interpolation": "oklab",
        "angle": 90,
        "name": "YouTube",
        "contrast": {
          "white": {
            "ratio": 4.434,
            "at": 0,
            "passesAA": false,
            "passesAALarge": true
          },
          "black": {
            "ratio": 3.016,
            "at": 1,
            "passesAA": false,
            "passesAALarge": true
          },
          "suggestedInk": "#ffffff"
        }
      }
    },
    "$description": "YouTube (uiGradients, MIT), rendered in OKLab."
  }
}

Tagged

Red gradientsWarmVividMonochromeJewel Tones

More red gradients

mcpConnect your agent to the gradient engine
live endpoint

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.

endpointhttps://mcp.brandsweets.com/gradients/mcp
claude mcp add --transport http brandsweets-gradients https://mcp.brandsweets.com/gradients/mcp
try this prompt

›take the YouTube gradient (#e52d27, #b31217), re-interpolate it in oklch, and tell me the worst-case contrast for white text

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: gradients.md · From uiGradients (MIT) — licences