Brand gradient

League of Legends gradient

The gradient League of Legends'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.

#0a1428 #0000ee #c8aa6e

Open in the maker League of Legends colors →Full brand page →gaming

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

League of Legends

white text · worst 9.40:1 · AA

white 9.40 AAblack 1.14 failsbanding medium

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 (8.23:1) without adjusting L.

white 8.23 AAblack 1.15 failsbanding medium

css

linear-gradient(135deg in oklab, #11151c 0%, #324d88 100%)

tailwind v4

bg-linear-to-br/oklab from-[#11151c] to-[#324d88]

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 15.33:1).

white 16.81 AAblack 1.07 failsbanding high

Get started

hover

active

label ink passes AA on all three

css

linear-gradient(180deg in oklch shorter hue, #131d32 0%, #040b1e 100%)

tailwind v4

bg-linear-to-b/oklch from-[#131d32] to-[#040b1e]

Variants

Tonal ramp

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white 10.25 AAblack 1.00 failsbanding high

css

linear-gradient(135deg in oklch shorter hue, #354158 0%, #0a1428 50%, #000006 100%)

tailwind v4

bg-linear-to-br/oklch from-[#354158] via-[#0a1428] to-[#000006]

Analogous

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Partner hue from the analogous rule at the source colour's lightness.

white 18.27 AAblack 1.14 failsbanding high

css

linear-gradient(135deg in oklab, #0a1428 0%, #0c161b 100%)

tailwind v4

bg-linear-to-br/oklab from-[#0a1428] to-[#0c161b]

Complementary

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Partner hue from the complementary rule at the source colour's lightness. ΔH 179° > 140° — interpolating in oklch (shorter hue) keeps the midpoint saturated.

white 18.28 AAblack 1.14 failsbanding high

css

linear-gradient(135deg in oklch shorter hue, #0a1428 0%, #19140b 100%)

tailwind v4

bg-linear-to-br/oklch from-[#0a1428] to-[#19140b]

Triadic

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Partner hue from the triadic rule at the source colour's lightness.

white 18.32 AAblack 1.13 failsbanding high

css

linear-gradient(135deg in oklab, #0a1428 0%, #220e0d 100%)

tailwind v4

bg-linear-to-br/oklab from-[#0a1428] to-[#220e0d]

Report — brand gradient

white ink: worst 9.40:1 at 100% (AA); black ink: worst 1.14:1 at 0% (fails AA) → use white text.
Banding medium: ~7px bands at 1440px — add grain 14 (≈2% 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 9.40:1 AA, black 1.14:1 */
  --brand-gradient: linear-gradient(135deg in oklab, #0a1428 0%, #0000ee 100%);
  /* hero — worst-case contrast: white 8.23:1 AA, black 1.15:1; ink passes AA at the worst point */
  --brand-gradient-hero: linear-gradient(135deg in oklab, #11151c 0%, #324d88 100%);
  --brand-gradient-hero-ink: #ffffff;
  /* button — worst-case contrast: white 16.81:1 AA, black 1.07:1 */
  --brand-gradient-button: linear-gradient(180deg in oklch shorter hue, #131d32 0%, #040b1e 100%);
  --brand-gradient-button-hover: linear-gradient(180deg in oklch shorter hue, #1a253a 0%, #081225 100%);
  --brand-gradient-button-active: linear-gradient(180deg in oklch shorter hue, #0c162b 0%, #010517 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="#0a1428"/><stop offset="7.14%" stop-color="#091734"/><stop offset="14.29%" stop-color="#081941"/><stop offset="21.43%" stop-color="#061b4e"/><stop offset="28.57%" stop-color="#051c5b"/><stop offset="35.71%" stop-color="#041e69"/><stop offset="42.86%" stop-color="#021e76"/><stop offset="50%" stop-color="#011e85"/><stop offset="57.14%" stop-color="#001e93"/><stop offset="64.29%" stop-color="#001da2"/><stop offset="71.43%" stop-color="#001bb0"/><stop offset="78.57%" stop-color="#0018bf"/><stop offset="85.71%" stop-color="#0014cf"/><stop offset="92.86%" stop-color="#000cde"/><stop offset="100%" stop-color="#0000ee"/></linearGradient></defs><rect width="1440" height="600" fill="url(#bs-gradient)"/></svg>

dtcg · tokens.json

{
  "gradient": {
    "brand": {
      "$type": "gradient",
      "$value": [
        {
          "color": {
            "colorSpace": "srgb",
            "components": [
              0.039,
              0.078,
              0.157
            ],
            "hex": "#0a1428"
          },
          "position": 0
        },
        {
          "color": {
            "colorSpace": "srgb",
            "components": [
              0,
              0,
              0.933
            ],
            "hex": "#0000ee"
          },
          "position": 1
        }
      ],
      "$extensions": {
        "com.brandsweets": {
          "kind": "linear",
          "css": "linear-gradient(135deg in oklab, #0a1428 0%, #0000ee 100%)",
          "interpolation": "oklab",
          "angle": 135,
          "name": "brand",
          "contrast": {
            "white": {
              "ratio": 9.398,
              "at": 1,
              "passesAA": true,
              "passesAALarge": true
            },
            "black": {
              "ratio": 1.144,
              "at": 0,
              "passesAA": false,
              "passesAALarge": false
            },
            "suggestedInk": "#ffffff"
          }
        }
      },
      "$description": "The canonical brand gradient (--brand-gradient)."
    },
    "hero": {
      "$type": "gradient",
      "$value": [
        {
          "color": {
            "colorSpace": "srgb",
            "components": [
              0.067,
              0.082,
              0.11
            ],
            "hex": "#11151c"
          },
          "position": 0
        },
        {
          "color": {
            "colorSpace": "srgb",
            "components": [
              0.196,
              0.302,
              0.533
            ],
            "hex": "#324d88"
          },
          "position": 1
        }
      ],
      "$extensions": {
        "com.brandsweets": {
          "kind": "linear",
          "css": "linear-gradient(135deg in oklab, #11151c 0%, #324d88 100%)",
          "interpolation": "oklab",
          "angle": 135,
          "name": "hero",
          "ink": "#ffffff",
          "contrast": {
            "white": {
              "ratio": 8.227,
              "at": 1,
              "passesAA": true,
              "passesAALarge": true
            },
            "black": {
              "ratio": 1.148,
              "at": 0,
              "passesAA": false,
              "passesAALarge": false
            },
            "suggestedInk": "#ffffff"
          }
        }
      },
      "$description": "Low-chroma hero background with a text-safe ink (--brand-gradient-hero)."
    },
    "button": {
      "$type": "gradient",
      "$value": [
        {
          "color": {
            "colorSpace": "srgb",
            "components": [
              0.075,
              0.114,
              0.196
            ],
            "hex": "#131d32"
          },
          "position": 0
        },
        {
          "color": {
            "colorSpace": "srgb",
            "components": [
              0.016,
              0.043,
              0.118
            ],
            "hex": "#040b1e"
          },
          "position": 1
        }
      ],
      "$extensions": {
        "com.brandsweets": {
          "kind": "linear",
          "css": "linear-gradient(180deg in oklch shorter hue, #131d32 0%, #040b1e 100%)",
          "interpolation": "oklch",
          "hue": "shorter",
          "angle": 180,
          "name": "button",
          "ink": "#ffffff",
          "states": {
            "hover": "linear-gradient(180deg in oklch shorter hue, #1a253a 0%, #081225 100%)",
            "active": "linear-gradient(180deg in oklch shorter hue, #0c162b 0%, #010517 100%)"
          },
          "contrast": {
            "white": {
              "ratio": 16.807,
              "at": 0,
              "passesAA": true,
              "passesAALarge": true
            },
            "black": {
              "ratio": 1.072,
              "at": 0.9841,
              "passesAA": false,
              "passesAALarge": false
            },
            "suggestedInk": "#ffffff"
          }
        }
      },
      "$description": "Button / CTA surface with hover and active states (--brand-gradient-button)."
    }
  }
}

Colours

#0a1428 #0000ee #c8aa6e

mcpConnect your agent — League of Legends'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 leagueoflegends-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.

League of Legends 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 League of Legends. Owner of this brand? Request a correction or removal → Machine-readable: gradients.md