Colour to colour · generated

Sea Green to Maroon gradient

Sea Green (#2e8b57) into Maroon (#800000) — 126° 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.

Sea Green → Maroon
white text · worst 4.25:1 · AA large
white 4.25 AA largeblack 1.92 failsbanding 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 4.25 AA largeblack 1.92 failsbanding high
css
linear-gradient(135deg in oklab, #2e8b57 0%, #800000 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 4.24 AA largeblack 1.92 failsbanding high
css
linear-gradient(135deg in oklch shorter hue, #2e8b57 0%, #800000 100%)

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

sRGB33%
OKLab44%
OKLCH70%

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 4.24 AA largeblack 1.92 failsbanding high
css
linear-gradient(135deg in oklab, #2e8b57 0%, #338a56 8.28%, #3d8553 16.03%, #497f4e 23.35%, #557747 30.32%, #606d40 37.03%, #686338 43.56%, #705730 50%, #754b27 56.44%, #793e1f 62.97%, #7c3116 69.68%, #7e230e 76.65%, #7f1506 83.97%, #800602 91.72%, #800000 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 5.77 AAblack 2.05 failsbanding high
css
background-color: #705730;
background-image: radial-gradient(circle farthest-corner at 9.81% 31.61%, rgba(128, 0, 0, 0.879) 0%, rgba(128, 0, 0, 0) 45.35%), radial-gradient(circle farthest-corner at 88.49% 57.21%, rgba(46, 139, 87, 0.708) 0%, rgba(46, 139, 87, 0) 53.86%);
background-image: radial-gradient(circle farthest-corner at 9.81% 31.61%, oklch(from #800000 l c h / 0.8792) 0%, rgb(from #800000 r g b / 0) 45.35%), radial-gradient(circle farthest-corner at 88.49% 57.21%, oklch(from #2e8b57 l c h / 0.7083) 0%, rgb(from #2e8b57 r g b / 0) 53.86%);

Report

  • white ink: worst 4.25:1 at 0% (AA-large only); black ink: worst 1.92:1 at 100% (fails AA) → 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: ~10px bands at 1440px — add grain 21 (≈2% soft-light noise) or shorten the ramp.

Export

css
.gradient {
  background-image: linear-gradient(135deg, #2e8b57 0%, #408451 7.14%, #4d7d4c 14.29%, #577546 21.43%, #5f6e41 28.57%, #66663b 35.71%, #6b5f35 42.86%, #705730 50%, #734f2a 57.14%, #774624 64.29%, #793d1e 71.43%, #7c3318 78.57%, #7e2810 85.71%, #7f1a08 92.86%, #800000 100%);
  background-image: linear-gradient(135deg in oklab, #2e8b57 0%, #800000 100%);
}
tailwind v4
bg-linear-to-br/oklab from-[#2e8b57] to-[#800000]
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="#2e8b57"/><stop offset="7.14%" stop-color="#408451"/><stop offset="14.29%" stop-color="#4d7d4c"/><stop offset="21.43%" stop-color="#577546"/><stop offset="28.57%" stop-color="#5f6e41"/><stop offset="35.71%" stop-color="#66663b"/><stop offset="42.86%" stop-color="#6b5f35"/><stop offset="50%" stop-color="#705730"/><stop offset="57.14%" stop-color="#734f2a"/><stop offset="64.29%" stop-color="#774624"/><stop offset="71.43%" stop-color="#793d1e"/><stop offset="78.57%" stop-color="#7c3318"/><stop offset="85.71%" stop-color="#7e2810"/><stop offset="92.86%" stop-color="#7f1a08"/><stop offset="100%" stop-color="#800000"/></linearGradient></defs><rect width="1440" height="600" fill="url(#bs-gradient)"/></svg>
dtcg
{
  "seagreen-to-maroon": {
    "$type": "gradient",
    "$value": [
      {
        "color": {
          "colorSpace": "srgb",
          "components": [
            0.18,
            0.545,
            0.341
          ],
          "hex": "#2e8b57"
        },
        "position": 0
      },
      {
        "color": {
          "colorSpace": "srgb",
          "components": [
            0.502,
            0,
            0
          ],
          "hex": "#800000"
        },
        "position": 1
      }
    ],
    "$extensions": {
      "com.brandsweets": {
        "kind": "linear",
        "css": "linear-gradient(135deg in oklab, #2e8b57 0%, #800000 100%)",
        "interpolation": "oklab",
        "angle": 135,
        "name": "seagreen-to-maroon",
        "contrast": {
          "white": {
            "ratio": 4.245,
            "at": 0,
            "passesAA": false,
            "passesAALarge": true
          },
          "black": {
            "ratio": 1.918,
            "at": 1,
            "passesAA": false,
            "passesAALarge": false
          },
          "suggestedInk": "#ffffff"
        }
      }
    },
    "$description": "Sea Green to Maroon, interpolated in oklab."
  }
}

More from Sea Green

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 sea green to maroon 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