Colour to colour · generated

Copper to Sand gradient

Copper (#b87333) into Sand (#c2b280) — 32° 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.

Copper → Sand
black text · worst 5.54:1 · AA
white 2.11 failsblack 5.54 AAbanding high

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 2.11 failsblack 5.54 AAbanding high
css
linear-gradient(135deg in oklab, #b87333 0%, #c2b280 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 2.11 failsblack 5.54 AAbanding high
css
linear-gradient(135deg in oklch shorter hue, #b87333 0%, #c2b280 100%)

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

sRGB74%
OKLab74%
OKLCH74%

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 2.11 failsblack 5.54 AAbanding high
css
linear-gradient(135deg in oklab, #b87333 0%, #b87434 8.28%, #b97738 16.03%, #ba7b3d 23.35%, #bb8044 30.32%, #bc864b 37.03%, #bd8c53 43.56%, #be935b 50%, #bf9963 56.44%, #c0a06b 62.97%, #c1a672 69.68%, #c1ab77 76.65%, #c2af7c 83.97%, #c2b17f 91.72%, #c2b280 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 2.57 failsblack 6.04 AAbanding high
css
background-color: #be935b;
background-image: radial-gradient(circle farthest-corner at 5.6% 21.92%, rgba(184, 115, 51, 0.872) 0%, rgba(184, 115, 51, 0) 51.14%), radial-gradient(circle farthest-corner at 34.23% 71.66%, rgba(194, 178, 128, 0.765) 0%, rgba(194, 178, 128, 0) 46.41%);
background-image: radial-gradient(circle farthest-corner at 5.6% 21.92%, oklch(from #b87333 l c h / 0.8718) 0%, rgb(from #b87333 r g b / 0) 51.14%), radial-gradient(circle farthest-corner at 34.23% 71.66%, oklch(from #c2b280 l c h / 0.7652) 0%, rgb(from #c2b280 r g b / 0) 46.41%);

Report

  • white ink: worst 2.11:1 at 100% (fails AA); black ink: worst 5.54:1 at 0% (AA) → use black text.
  • Banding high: ~19px bands at 1440px — add grain 38 (≈3% soft-light noise) or shorten the ramp.

Export

css
.gradient {
  background-image: linear-gradient(135deg, #b87333 0%, #b97839 7.14%, #ba7c3f 14.29%, #bb8145 21.43%, #bc854b 28.57%, #bd8a50 35.71%, #be8e56 42.86%, #be935b 50%, #bf9761 57.14%, #c09c66 64.29%, #c0a06b 71.43%, #c1a570 78.57%, #c1a976 85.71%, #c2ae7b 92.86%, #c2b280 100%);
  background-image: linear-gradient(135deg in oklab, #b87333 0%, #c2b280 100%);
}
tailwind v4
bg-linear-to-br/oklab from-[#b87333] to-[#c2b280]
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="#b87333"/><stop offset="7.14%" stop-color="#b97839"/><stop offset="14.29%" stop-color="#ba7c3f"/><stop offset="21.43%" stop-color="#bb8145"/><stop offset="28.57%" stop-color="#bc854b"/><stop offset="35.71%" stop-color="#bd8a50"/><stop offset="42.86%" stop-color="#be8e56"/><stop offset="50%" stop-color="#be935b"/><stop offset="57.14%" stop-color="#bf9761"/><stop offset="64.29%" stop-color="#c09c66"/><stop offset="71.43%" stop-color="#c0a06b"/><stop offset="78.57%" stop-color="#c1a570"/><stop offset="85.71%" stop-color="#c1a976"/><stop offset="92.86%" stop-color="#c2ae7b"/><stop offset="100%" stop-color="#c2b280"/></linearGradient></defs><rect width="1440" height="600" fill="url(#bs-gradient)"/></svg>
dtcg
{
  "copper-to-sand": {
    "$type": "gradient",
    "$value": [
      {
        "color": {
          "colorSpace": "srgb",
          "components": [
            0.722,
            0.451,
            0.2
          ],
          "hex": "#b87333"
        },
        "position": 0
      },
      {
        "color": {
          "colorSpace": "srgb",
          "components": [
            0.761,
            0.698,
            0.502
          ],
          "hex": "#c2b280"
        },
        "position": 1
      }
    ],
    "$extensions": {
      "com.brandsweets": {
        "kind": "linear",
        "css": "linear-gradient(135deg in oklab, #b87333 0%, #c2b280 100%)",
        "interpolation": "oklab",
        "angle": 135,
        "name": "copper-to-sand",
        "contrast": {
          "white": {
            "ratio": 2.106,
            "at": 1,
            "passesAA": false,
            "passesAALarge": false
          },
          "black": {
            "ratio": 5.538,
            "at": 0,
            "passesAA": true,
            "passesAALarge": true
          },
          "suggestedInk": "#000000"
        }
      }
    },
    "$description": "Copper to Sand, interpolated in oklab."
  }
}

More from Copper

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 copper to sand 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