brandsweets

Named gradient · uiGradients

Sylvia

Sylvia is a red gradient from uiGradients (MIT) — #ff4b1f → #ff9068 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.

#ff4b1f#ff9068
Open in the makerOriginal sRGB in the maker
Aa — the quick brown fox
black text · worst 6.28:1 · AA
white 2.22 failsblack 6.28 AAbanding 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.

sRGB79%
OKLab79%
OKLCH79%

Report

  • white ink: worst 2.22:1 at 100% (fails AA); black ink: worst 6.28:1 at 0% (AA) → use black text.
  • Banding high: ~20px bands at 1440px — add grain 39 (≈3% soft-light noise) or shorten the ramp.

Export

css
.gradient {
  background-image: linear-gradient(90deg, #ff4b1f 0%, #ff5127 7.14%, #ff572d 14.29%, #ff5d33 21.43%, #ff6239 28.57%, #ff673e 35.71%, #ff6c43 42.86%, #ff7148 50%, #ff764d 57.14%, #ff7a52 64.29%, #ff7f56 71.43%, #ff835b 78.57%, #ff885f 85.71%, #ff8c64 92.86%, #ff9068 100%);
  background-image: linear-gradient(90deg in oklab, #ff4b1f 0%, #ff9068 100%);
}
tailwind v4
bg-linear-to-r/oklab from-[#ff4b1f] to-[#ff9068]
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="#ff4b1f"/><stop offset="7.14%" stop-color="#ff5127"/><stop offset="14.29%" stop-color="#ff572d"/><stop offset="21.43%" stop-color="#ff5d33"/><stop offset="28.57%" stop-color="#ff6239"/><stop offset="35.71%" stop-color="#ff673e"/><stop offset="42.86%" stop-color="#ff6c43"/><stop offset="50%" stop-color="#ff7148"/><stop offset="57.14%" stop-color="#ff764d"/><stop offset="64.29%" stop-color="#ff7a52"/><stop offset="71.43%" stop-color="#ff7f56"/><stop offset="78.57%" stop-color="#ff835b"/><stop offset="85.71%" stop-color="#ff885f"/><stop offset="92.86%" stop-color="#ff8c64"/><stop offset="100%" stop-color="#ff9068"/></linearGradient></defs><rect width="1440" height="600" fill="url(#bs-gradient)"/></svg>
dtcg
{
  "sylvia": {
    "$type": "gradient",
    "$value": [
      {
        "color": {
          "colorSpace": "srgb",
          "components": [
            1,
            0.294,
            0.122
          ],
          "hex": "#ff4b1f"
        },
        "position": 0
      },
      {
        "color": {
          "colorSpace": "srgb",
          "components": [
            1,
            0.565,
            0.408
          ],
          "hex": "#ff9068"
        },
        "position": 1
      }
    ],
    "$extensions": {
      "com.brandsweets": {
        "kind": "linear",
        "css": "linear-gradient(90deg in oklab, #ff4b1f 0%, #ff9068 100%)",
        "interpolation": "oklab",
        "angle": 90,
        "name": "Sylvia",
        "contrast": {
          "white": {
            "ratio": 2.224,
            "at": 1,
            "passesAA": false,
            "passesAALarge": false
          },
          "black": {
            "ratio": 6.278,
            "at": 0,
            "passesAA": true,
            "passesAALarge": true
          },
          "suggestedInk": "#000000"
        }
      }
    },
    "$description": "Sylvia (uiGradients, MIT), rendered in OKLab."
  }
}

Tagged

Red gradientsWarmVividMonochrome

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 Sylvia gradient (#ff4b1f, #ff9068), 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