Colour to colour · generated

Amber to Crimson gradient

Amber (#ffbf00) into Crimson (#dc143c) — 64° apart on the OKLCH hue wheel. Below: the same two stops interpolated in OKLab and in OKLCH, side by side, because the difference is real and most generators never let you see it; then an eased version and a mesh, each with the worst-case contrast for white and black text. The engine's own pick for this pair is oklab — both colours are in the palette and the hue gap is small enough that the straight line stays clean.

Amber → Crimson
black text · worst 4.21:1 · AA large
white 1.65 failsblack 4.21 AA largebanding medium

OKLab and OKLCH, side by side

Aa

A straight line through the a/b plane: the two hues meet halfway and desaturate a little at the midpoint. The safe default — it is what CSS and Tailwind default to.

white 1.65 failsblack 4.21 AA largebanding medium
css
linear-gradient(135deg in oklab, #ffbf00 0%, #dc143c 100%)
Aa

OKLCH (shorter hue)

Open in maker →

Chroma and hue interpolate separately, so the midpoint keeps its saturation and the hue travels the short way round the wheel — richer, and it can pass through hues neither colour has.

white 1.65 failsblack 4.21 AA largebanding medium
css
linear-gradient(135deg in oklch shorter hue, #ffbf00 0%, #dc143c 100%)

And the sRGB line most tools draw, for comparison — the number is the chroma that survives at the dullest point.

sRGB84%
OKLab82%
OKLCH86%

Eased and mesh

Aa

Eased (soft)

Open in maker →

A cubic-bezier(.4, 0, .6, 1) mix ratio baked into 15 stops: the transition lingers on each colour and moves faster through the middle, which is what makes a gradient read as designed rather than default.

white 1.65 failsblack 4.21 AA largebanding medium
css
linear-gradient(135deg in oklab, #ffbf00 0%, #ffbd04 8.28%, #feb80f 16.03%, #fdaf1a 23.35%, #fba422 30.32%, #f89729 37.03%, #f5892f 43.56%, #f17a33 50%, #ed6a37 56.44%, #e95939 62.97%, #e5493a 69.68%, #e2393b 76.65%, #df293c 83.97%, #dd1b3c 91.72%, #dc143c 100%)
Aa

Both colours as stacked radials over a base, laid out by a seeded Poisson-disc sampler — the same seed gives the same mesh forever. Exports as CSS, SVG and PNG.

white 2.36 failsblack 6.92 AAbanding low
css
background-color: #f17a33;
background-image: radial-gradient(circle farthest-corner at 25.59% 98.9%, rgba(220, 20, 60, 0.726) 0%, rgba(220, 20, 60, 0) 50.18%), radial-gradient(circle farthest-corner at 5.87% 57.43%, rgba(255, 191, 0, 0.867) 0%, rgba(255, 191, 0, 0) 51.68%);
background-image: radial-gradient(circle farthest-corner at 25.59% 98.9%, oklch(from #dc143c l c h / 0.726) 0%, rgb(from #dc143c r g b / 0) 50.18%), radial-gradient(circle farthest-corner at 5.87% 57.43%, oklch(from #ffbf00 l c h / 0.8665) 0%, rgb(from #ffbf00 r g b / 0) 51.68%);

Report

  • white ink: worst 1.65:1 at 0% (fails AA); black ink: worst 4.21:1 at 100% (AA-large only) → use black 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 medium: ~8px bands at 1440px — add grain 17 (≈2% soft-light noise) or shorten the ramp.

Export

css
.gradient {
  background-image: linear-gradient(135deg, #ffbf00 0%, #feb513 7.14%, #fcac1d 14.29%, #faa224 21.43%, #f89829 28.57%, #f68e2d 35.71%, #f48431 42.86%, #f17a33 50%, #ef6f36 57.14%, #ec6437 64.29%, #e95839 71.43%, #e64c3a 78.57%, #e33e3b 85.71%, #e02d3c 92.86%, #dc143c 100%);
  background-image: linear-gradient(135deg in oklab, #ffbf00 0%, #dc143c 100%);
}
tailwind v4
bg-linear-to-br/oklab from-[#ffbf00] to-[#dc143c]
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="210" y1="-210" x2="1230" y2="810"><stop offset="0%" stop-color="#ffbf00"/><stop offset="7.14%" stop-color="#feb513"/><stop offset="14.29%" stop-color="#fcac1d"/><stop offset="21.43%" stop-color="#faa224"/><stop offset="28.57%" stop-color="#f89829"/><stop offset="35.71%" stop-color="#f68e2d"/><stop offset="42.86%" stop-color="#f48431"/><stop offset="50%" stop-color="#f17a33"/><stop offset="57.14%" stop-color="#ef6f36"/><stop offset="64.29%" stop-color="#ec6437"/><stop offset="71.43%" stop-color="#e95839"/><stop offset="78.57%" stop-color="#e64c3a"/><stop offset="85.71%" stop-color="#e33e3b"/><stop offset="92.86%" stop-color="#e02d3c"/><stop offset="100%" stop-color="#dc143c"/></linearGradient></defs><rect width="1440" height="600" fill="url(#bs-gradient)"/></svg>
dtcg
{
  "amber-to-crimson": {
    "$type": "gradient",
    "$value": [
      {
        "color": {
          "colorSpace": "srgb",
          "components": [
            1,
            0.749,
            0
          ],
          "hex": "#ffbf00"
        },
        "position": 0
      },
      {
        "color": {
          "colorSpace": "srgb",
          "components": [
            0.863,
            0.078,
            0.235
          ],
          "hex": "#dc143c"
        },
        "position": 1
      }
    ],
    "$extensions": {
      "com.brandsweets": {
        "kind": "linear",
        "css": "linear-gradient(135deg in oklab, #ffbf00 0%, #dc143c 100%)",
        "interpolation": "oklab",
        "angle": 135,
        "name": "amber-to-crimson",
        "contrast": {
          "white": {
            "ratio": 1.653,
            "at": 0,
            "passesAA": false,
            "passesAALarge": false
          },
          "black": {
            "ratio": 4.208,
            "at": 1,
            "passesAA": false,
            "passesAALarge": true
          },
          "suggestedInk": "#000000"
        }
      }
    },
    "$description": "Amber to Crimson, interpolated in oklab."
  }
}

More from Amber

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

make a amber to crimson hero gradient in oklch that passes AA for white text, with grain if it bands

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

Machine-readable: gradients.md