Brand gradient

Retool gradient

The gradient Retool's published colour tokens imply, derived by a pure function of the palette: primary → secondary in OKLab (OKLCH shorter hue when the hues are more than 140° apart; a tonal ramp when they are within ΔE 0.15), then a hero background with an ink that passes AA at the worst point along the line, a button surface with hover and active states, and the variant contact sheet. Same inputs, same gradients, forever — which is what makes them citable; the same values are served as --brand-gradient in the brand's brand.css.

#242424 #0e352c #518dd2

Open in the maker Retool colors →Full brand page →

Source: retool.com
Extracted: 2 September 2026
Version: 4

Retool

white text · worst 7.81:1 · AA

white 7.81 AAblack 1.01 failsbanding high

Hero and button

Hero background

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Chroma ×0.35 so it can carry text; ink white (inkFor at the midpoint). Passes AA for that ink at the worst point (7.81:1) without adjusting L.

white 7.81 AAblack 1.01 failsbanding high

css

linear-gradient(135deg in oklch shorter hue, #525252 0%, #242424 50%, #020202 100%)

tailwind v4

bg-linear-to-br/oklch from-[#525252] via-[#242424] to-[#020202]

Button / CTA

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ΔL 0.08 top→bottom in the primary's hue (a lit surface, not a rainbow); hover L +0.03, active L −0.03. White ink passes AA on the surface and both states (worst 12.27:1).

white 13.58 AAblack 1.22 failsbanding high

Get started

hover

active

label ink passes AA on all three

css

linear-gradient(180deg in oklch shorter hue, #2e2e2e 0%, #1b1b1b 100%)

tailwind v4

bg-linear-to-b/oklch from-[#2e2e2e] to-[#1b1b1b]

Variants

Tonal ramp

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white 7.81 AAblack 1.01 failsbanding high

css

linear-gradient(135deg in oklch shorter hue, #525252 0%, #242424 50%, #020202 100%)

tailwind v4

bg-linear-to-br/oklch from-[#525252] via-[#242424] to-[#020202]

Analogous

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Primary #242424 is achromatic — harmony rotates #0e352c instead. Partner hue from the analogous rule at the source colour's lightness.

white 13.28 AAblack 1.56 failsbanding high

css

linear-gradient(135deg in oklab, #0e352c 0%, #0e3712 100%)

tailwind v4

bg-linear-to-br/oklab from-[#0e352c] to-[#0e3712]

Complementary

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Primary #242424 is achromatic — harmony rotates #0e352c instead. Partner hue from the complementary rule at the source colour's lightness. ΔH 180° > 140° — interpolating in oklch (shorter hue) keeps the midpoint saturated.

white 13.28 AAblack 1.45 failsbanding high

css

linear-gradient(135deg in oklch shorter hue, #0e352c 0%, #510f30 100%)

tailwind v4

bg-linear-to-br/oklch from-[#0e352c] to-[#510f30]

Triadic

Open in maker →

Primary #242424 is achromatic — harmony rotates #0e352c instead. Partner hue from the triadic rule at the source colour's lightness.

white 13.37 AAblack 1.44 failsbanding high

css

linear-gradient(135deg in oklab, #0e352c 0%, #351368 100%)

tailwind v4

bg-linear-to-br/oklab from-[#0e352c] to-[#351368]

Report — brand gradient

white ink: worst 7.81:1 at 0% (AA); black ink: worst 1.01:1 at 98% (fails AA) → use white text.
Black text disappears completely at 98% (1.00:1 crossing).
Banding high: ~21px bands at 1440px — add grain 41 (≈3% soft-light noise) or shorten the ramp.

Export

The custom properties below are byte-identical to the gradient block in brand.css; the DTCG token is what tokens.json carries.

css custom properties · brand.css

:root {
  /* Brand gradient (derived) */
  /* worst-case contrast: white 7.81:1 AA, black 1.01:1 */
  --brand-gradient: linear-gradient(135deg in oklch shorter hue, #525252 0%, #242424 50%, #020202 100%);
  /* hero — worst-case contrast: white 7.81:1 AA, black 1.01:1; ink passes AA at the worst point */
  --brand-gradient-hero: linear-gradient(135deg in oklch shorter hue, #525252 0%, #242424 50%, #020202 100%);
  --brand-gradient-hero-ink: #ffffff;
  /* button — worst-case contrast: white 13.58:1 AA, black 1.22:1 */
  --brand-gradient-button: linear-gradient(180deg in oklch shorter hue, #2e2e2e 0%, #1b1b1b 100%);
  --brand-gradient-button-hover: linear-gradient(180deg in oklch shorter hue, #353535 0%, #222222 100%);
  --brand-gradient-button-active: linear-gradient(180deg in oklch shorter hue, #262626 0%, #141414 100%);
  --brand-gradient-button-ink: #ffffff;
}

svg · brand gradient

<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="#525252"/><stop offset="3.57%" stop-color="#4f4f4f"/><stop offset="7.14%" stop-color="#4b4b4b"/><stop offset="10.71%" stop-color="#484848"/><stop offset="14.29%" stop-color="#444444"/><stop offset="17.86%" stop-color="#414141"/><stop offset="21.43%" stop-color="#3e3e3e"/><stop offset="25%" stop-color="#3a3a3a"/><stop offset="28.57%" stop-color="#373737"/><stop offset="32.14%" stop-color="#343434"/><stop offset="35.71%" stop-color="#313131"/><stop offset="39.29%" stop-color="#2d2d2d"/><stop offset="42.86%" stop-color="#2a2a2a"/><stop offset="46.43%" stop-color="#272727"/><stop offset="50%" stop-color="#242424"/><stop offset="53.57%" stop-color="#212121"/><stop offset="57.14%" stop-color="#1e1e1e"/><stop offset="60.71%" stop-color="#1b1b1b"/><stop offset="64.29%" stop-color="#181818"/><stop offset="67.86%" stop-color="#151515"/><stop offset="71.43%" stop-color="#131313"/><stop offset="75%" stop-color="#101010"/><stop offset="78.57%" stop-color="#0d0d0d"/><stop offset="82.14%" stop-color="#0b0b0b"/><stop offset="85.71%" stop-color="#080808"/><stop offset="89.29%" stop-color="#060606"/><stop offset="92.86%" stop-color="#040404"/><stop offset="96.43%" stop-color="#030303"/><stop offset="100%" stop-color="#020202"/></linearGradient></defs><rect width="1440" height="600" fill="url(#bs-gradient)"/></svg>

dtcg · tokens.json

{
  "gradient": {
    "brand": {
      "$type": "gradient",
      "$value": [
        {
          "color": {
            "colorSpace": "srgb",
            "components": [
              0.322,
              0.322,
              0.322
            ],
            "hex": "#525252"
          },
          "position": 0
        },
        {
          "color": {
            "colorSpace": "srgb",
            "components": [
              0.141,
              0.141,
              0.141
            ],
            "hex": "#242424"
          },
          "position": 0.5
        },
        {
          "color": {
            "colorSpace": "srgb",
            "components": [
              0.008,
              0.008,
              0.008
            ],
            "hex": "#020202"
          },
          "position": 1
        }
      ],
      "$extensions": {
        "com.brandsweets": {
          "kind": "linear",
          "css": "linear-gradient(135deg in oklch shorter hue, #525252 0%, #242424 50%, #020202 100%)",
          "interpolation": "oklch",
          "hue": "shorter",
          "angle": 135,
          "name": "brand",
          "contrast": {
            "white": {
              "ratio": 7.814,
              "at": 0,
              "passesAA": true,
              "passesAALarge": true
            },
            "black": {
              "ratio": 1.012,
              "at": 0.9841,
              "passesAA": false,
              "passesAALarge": false
            },
            "suggestedInk": "#ffffff"
          }
        }
      },
      "$description": "The canonical brand gradient (--brand-gradient)."
    },
    "hero": {
      "$type": "gradient",
      "$value": [
        {
          "color": {
            "colorSpace": "srgb",
            "components": [
              0.322,
              0.322,
              0.322
            ],
            "hex": "#525252"
          },
          "position": 0
        },
        {
          "color": {
            "colorSpace": "srgb",
            "components": [
              0.141,
              0.141,
              0.141
            ],
            "hex": "#242424"
          },
          "position": 0.5
        },
        {
          "color": {
            "colorSpace": "srgb",
            "components": [
              0.008,
              0.008,
              0.008
            ],
            "hex": "#020202"
          },
          "position": 1
        }
      ],
      "$extensions": {
        "com.brandsweets": {
          "kind": "linear",
          "css": "linear-gradient(135deg in oklch shorter hue, #525252 0%, #242424 50%, #020202 100%)",
          "interpolation": "oklch",
          "hue": "shorter",
          "angle": 135,
          "name": "hero",
          "ink": "#ffffff",
          "contrast": {
            "white": {
              "ratio": 7.814,
              "at": 0,
              "passesAA": true,
              "passesAALarge": true
            },
            "black": {
              "ratio": 1.012,
              "at": 0.9841,
              "passesAA": false,
              "passesAALarge": false
            },
            "suggestedInk": "#ffffff"
          }
        }
      },
      "$description": "Low-chroma hero background with a text-safe ink (--brand-gradient-hero)."
    },
    "button": {
      "$type": "gradient",
      "$value": [
        {
          "color": {
            "colorSpace": "srgb",
            "components": [
              0.18,
              0.18,
              0.18
            ],
            "hex": "#2e2e2e"
          },
          "position": 0
        },
        {
          "color": {
            "colorSpace": "srgb",
            "components": [
              0.106,
              0.106,
              0.106
            ],
            "hex": "#1b1b1b"
          },
          "position": 1
        }
      ],
      "$extensions": {
        "com.brandsweets": {
          "kind": "linear",
          "css": "linear-gradient(180deg in oklch shorter hue, #2e2e2e 0%, #1b1b1b 100%)",
          "interpolation": "oklch",
          "hue": "shorter",
          "angle": 180,
          "name": "button",
          "ink": "#ffffff",
          "states": {
            "hover": "linear-gradient(180deg in oklch shorter hue, #353535 0%, #222222 100%)",
            "active": "linear-gradient(180deg in oklch shorter hue, #262626 0%, #141414 100%)"
          },
          "contrast": {
            "white": {
              "ratio": 13.58,
              "at": 0,
              "passesAA": true,
              "passesAALarge": true
            },
            "black": {
              "ratio": 1.219,
              "at": 0.9841,
              "passesAA": false,
              "passesAALarge": false
            },
            "suggestedInk": "#ffffff"
          }
        }
      },
      "$description": "Button / CTA surface with hover and active states (--brand-gradient-button)."
    }
  }
}

Colours

#242424 #0e352c #518dd2

mcpConnect your agent — Retool's gradients on demand

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

›brand_gradients for retool-com — give me the hero CSS and the ink that passes AA, then a version in oklch

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

Retool and its marks belong to their owner. This page uses the name nominatively to describe gradients derived from the brand's published colour values; it does not reproduce logos or other brand assets, and it is not affiliated with or endorsed by Retool. Owner of this brand? Request a correction or removal → Machine-readable: gradients.md