Colour to colour

Forest Green to Medium Violet Red gradient

Forest Green (#228b22) into Medium Violet Red (#c71585) — 153° 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 oklch: ΔH 153° > 140° — interpolating in oklch (shorter hue) keeps the midpoint saturated.

Forest Green → Medium Violet Red
white text · worst 4.37:1 · AA large
white 4.37 AA largeblack 3.87 AA largebanding 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 4.37 AA largeblack 3.87 AA largebanding high
css
linear-gradient(135deg in oklab, #228b22 0%, #c71585 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 4.37 AA largeblack 3.87 AA largebanding high
css
linear-gradient(135deg in oklch shorter hue, #228b22 0%, #c71585 100%)

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

sRGB14%
OKLab23%
OKLCH58%

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 4.37 AA largeblack 3.86 AA largebanding high
css
linear-gradient(135deg in oklch shorter hue, #228b22 0%, #2d8a18 8.28%, #438800 16.03%, #5f8200 23.35%, #767b00 30.32%, #887300 37.03%, #996900 43.56%, #aa5e00 50%, #bd4a00 56.44%, #d02a00 62.97%, #d21a3b 69.68%, #d0115b 76.65%, #cc1172 83.97%, #c81480 91.72%, #c71585 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 4.83 AAblack 3.47 AA largebanding high
css
background-color: #8f695e;
background-image: radial-gradient(circle farthest-corner at 41.83% 12.62%, rgba(199, 21, 133, 0.852) 0%, rgba(199, 21, 133, 0) 58.61%), radial-gradient(circle farthest-corner at 4.64% 55.73%, rgba(34, 139, 34, 0.743) 0%, rgba(34, 139, 34, 0) 46.22%);
background-image: radial-gradient(circle farthest-corner at 41.83% 12.62%, oklch(from #c71585 l c h / 0.8517) 0%, rgb(from #c71585 r g b / 0) 58.61%), radial-gradient(circle farthest-corner at 4.64% 55.73%, oklch(from #228b22 l c h / 0.7429) 0%, rgb(from #228b22 r g b / 0) 46.22%);

Report

  • white ink: worst 4.37:1 at 1% (AA-large only); black ink: worst 3.87:1 at 99% (AA-large only) → 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: ~9px bands at 1440px — add grain 18 (≈2% soft-light noise) or shorten the ramp.
  • 20/64 samples left sRGB by more than 5% and were gamut-mapped (oklch shorter); expect slight hue drift there.

Export

css
.gradient {
  background-image: linear-gradient(135deg, #228b22 0%, #4b8700 7.14%, #678000 14.29%, #7a7900 21.43%, #877300 28.57%, #936d00 35.71%, #9e6600 42.86%, #aa5e00 50%, #b65200 57.14%, #c63f00 64.29%, #d02900 71.43%, #d21c33 78.57%, #d11351 85.71%, #cd106c 92.86%, #c71585 100%);
  background-image: linear-gradient(135deg in oklch shorter hue, #228b22 0%, #c71585 100%);
}
tailwind v4
bg-linear-to-br/oklch from-[#228b22] to-[#c71585]
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="#228b22"/><stop offset="7.14%" stop-color="#4b8700"/><stop offset="14.29%" stop-color="#678000"/><stop offset="21.43%" stop-color="#7a7900"/><stop offset="28.57%" stop-color="#877300"/><stop offset="35.71%" stop-color="#936d00"/><stop offset="42.86%" stop-color="#9e6600"/><stop offset="50%" stop-color="#aa5e00"/><stop offset="57.14%" stop-color="#b65200"/><stop offset="64.29%" stop-color="#c63f00"/><stop offset="71.43%" stop-color="#d02900"/><stop offset="78.57%" stop-color="#d21c33"/><stop offset="85.71%" stop-color="#d11351"/><stop offset="92.86%" stop-color="#cd106c"/><stop offset="100%" stop-color="#c71585"/></linearGradient></defs><rect width="1440" height="600" fill="url(#bs-gradient)"/></svg>
dtcg
{
  "forestgreen-to-mediumvioletred": {
    "$type": "gradient",
    "$value": [
      {
        "color": {
          "colorSpace": "srgb",
          "components": [
            0.133,
            0.545,
            0.133
          ],
          "hex": "#228b22"
        },
        "position": 0
      },
      {
        "color": {
          "colorSpace": "srgb",
          "components": [
            0.78,
            0.082,
            0.522
          ],
          "hex": "#c71585"
        },
        "position": 1
      }
    ],
    "$extensions": {
      "com.brandsweets": {
        "kind": "linear",
        "css": "linear-gradient(135deg in oklch shorter hue, #228b22 0%, #c71585 100%)",
        "interpolation": "oklch",
        "hue": "shorter",
        "angle": 135,
        "name": "forestgreen-to-mediumvioletred",
        "contrast": {
          "white": {
            "ratio": 4.37,
            "at": 0.0085,
            "passesAA": false,
            "passesAALarge": true
          },
          "black": {
            "ratio": 3.868,
            "at": 0.987,
            "passesAA": false,
            "passesAALarge": true
          },
          "suggestedInk": "#ffffff"
        }
      }
    },
    "$description": "Forest Green to Medium Violet Red, interpolated in oklch."
  }
}

More from Forest 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 forest green to medium violet red 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