Named gradient · WebGradients

Premium Dark

Premium Dark is a neutral gradient from WebGradients (MIT) — #434343 → #000000 at 0°. Shown here interpolated in OKLab, next to the original sRGB, with the worst-case contrast for white and black text and every export.

#434343 #000000

Open in the maker Original sRGB in the maker

Aa — the quick brown fox

white text · worst 9.89:1 · AA

white 9.89 AAblack 1.00 failsbanding medium

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.

sRGB100%

OKLab100%

OKLCH100%

Report

white ink: worst 9.89:1 at 0% (AA); black ink: worst 1.00:1 at 87% (fails AA) → use white text.
Black text disappears completely at 87% (1.00:1 crossing).
Banding medium: ~21px bands at 1440px — add grain 42 (≈3% soft-light noise) or shorten the ramp.

Export

css

.gradient {
  background-image: linear-gradient(0deg, #434343 0%, #3c3c3c 7.14%, #353535 14.29%, #2e2e2e 21.43%, #272727 28.57%, #212121 35.71%, #1a1a1a 42.86%, #141414 50%, #0e0e0e 57.14%, #080808 64.29%, #040404 71.43%, #020202 78.57%, #010101 85.71%, #000000 92.86%, #000000 100%);
  background-image: linear-gradient(0deg in oklab, #434343 0%, #000000 100%);
}

tailwind v4

bg-linear-to-t/oklab from-[#434343] to-[#000000]

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="720" y1="600" x2="720" y2="0"><stop offset="0%" stop-color="#434343"/><stop offset="7.14%" stop-color="#3c3c3c"/><stop offset="14.29%" stop-color="#353535"/><stop offset="21.43%" stop-color="#2e2e2e"/><stop offset="28.57%" stop-color="#272727"/><stop offset="35.71%" stop-color="#212121"/><stop offset="42.86%" stop-color="#1a1a1a"/><stop offset="50%" stop-color="#141414"/><stop offset="57.14%" stop-color="#0e0e0e"/><stop offset="64.29%" stop-color="#080808"/><stop offset="71.43%" stop-color="#040404"/><stop offset="78.57%" stop-color="#020202"/><stop offset="85.71%" stop-color="#010101"/><stop offset="92.86%" stop-color="#000000"/><stop offset="100%" stop-color="#000000"/></linearGradient></defs><rect width="1440" height="600" fill="url(#bs-gradient)"/></svg>

dtcg

{
  "premium-dark": {
    "$type": "gradient",
    "$value": [
      {
        "color": {
          "colorSpace": "srgb",
          "components": [
            0.263,
            0.263,
            0.263
          ],
          "hex": "#434343"
        },
        "position": 0
      },
      {
        "color": {
          "colorSpace": "srgb",
          "components": [
            0,
            0,
            0
          ],
          "hex": "#000000"
        },
        "position": 1
      }
    ],
    "$extensions": {
      "com.brandsweets": {
        "kind": "linear",
        "css": "linear-gradient(0deg in oklab, #434343 0%, #000000 100%)",
        "interpolation": "oklab",
        "angle": 0,
        "name": "Premium Dark",
        "contrast": {
          "white": {
            "ratio": 9.894,
            "at": 0,
            "passesAA": true,
            "passesAALarge": true
          },
          "black": {
            "ratio": 1,
            "at": 0.8651,
            "passesAA": false,
            "passesAALarge": false
          },
          "suggestedInk": "#ffffff"
        }
      }
    },
    "$description": "Premium Dark (WebGradients, MIT), rendered in OKLab."
  }
}

Tagged

white 1.91 failsblack 7.85 AA

Open in maker →

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 Premium Dark gradient (#434343, #000000), 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 WebGradients (MIT) — licences