Indigo — 11-step color scale

Indigo (#4b0082) sits at 500, untouched. Every other step is Indigo composited over white or black at a decreasing opacity, so the whole ramp stays in one hue family instead of drifting toward another color at the ends.

Open Indigo in the generator

8%50

24%100

40%200

56%300

80%400

100%500your color

80%600

56%700

40%800

24%900

8%950

Each step is the base composited over white or black at the opacity shown.#4b0082

For text that needs to pass AA on white, 400, 500, 600, 700, 800, 900, 950 clear the 4.5:1 line. On a dark surface, 50, 100, 200, 300 do.

Semantic colors from Indigo

Success, warning, error and the rest are derived from Indigo itself, then checked so they stay distinguishable from the base — and from each other — under the three types of color blindness. The distance below is CIEDE2000 after each simulation.

Derived from #4b0082

Suggested	Protanopia	Deuteranopia	Tritanopia
success#004500	50.9	47.6	31.7
warning#6f0002	44.6	49.8	28.8
error#6a0037	14.8	28.8	23.5
discovery#256dd8	25.4	20.2	42.4
info#003d57	10.5	8.1	30.4
neutral#53495a	17.1	18.0	14.4

CIEDE2000 distance from the base under each simulation. The lowest of the three decides, and a dot marks the ones that land under 11.

The info suggestion starts out colliding with Indigo under Deuteranopia — ΔE₀₀ 8.1, below the 11 threshold — so the engine shifts its hue within the info family until the pair pulls apart again.

Export Indigo

The same five formats the generator produces, for this scale. Copy any block, or open the tool to tweak the ramp first.

CSS

:root {
  --color-color-50: #f1ebf5;
  --color-color-100: #d4c2e1;
  --color-color-200: #b799cd;
  --color-color-300: #9a70b9;
  --color-color-400: #6f339b;
  --color-color-500: #4b0082;
  --color-color-600: #3c0068;
  --color-color-700: #2a0049;
  --color-color-800: #1e0034;
  --color-color-900: #12001f;
  --color-color-950: #06000a;
}

SCSS

$color-color-50: #f1ebf5;
$color-color-100: #d4c2e1;
$color-color-200: #b799cd;
$color-color-300: #9a70b9;
$color-color-400: #6f339b;
$color-color-500: #4b0082;
$color-color-600: #3c0068;
$color-color-700: #2a0049;
$color-color-800: #1e0034;
$color-color-900: #12001f;
$color-color-950: #06000a;

JavaScript

export const color = {
  50: '#f1ebf5',
  100: '#d4c2e1',
  200: '#b799cd',
  300: '#9a70b9',
  400: '#6f339b',
  500: '#4b0082',
  600: '#3c0068',
  700: '#2a0049',
  800: '#1e0034',
  900: '#12001f',
  950: '#06000a',
};

JSON

{
  "color": {
    "50": "#f1ebf5",
    "100": "#d4c2e1",
    "200": "#b799cd",
    "300": "#9a70b9",
    "400": "#6f339b",
    "500": "#4b0082",
    "600": "#3c0068",
    "700": "#2a0049",
    "800": "#1e0034",
    "900": "#12001f",
    "950": "#06000a"
  }
}

Figma Variables

{
  "color": {
    "50": {
      "$type": "color",
      "$value": {
        "colorSpace": "srgb",
        "components": [
          0.9450980392156862,
          0.9215686274509803,
          0.9607843137254902
        ],
        "alpha": 1,
        "hex": "#F1EBF5"
      },
      "$extensions": {
        "com.figma.variableId": "VariableID:1:1",
        "com.figma.isOverride": true
      }
    },
    "100": {
      "$type": "color",
      "$value": {
        "colorSpace": "srgb",
        "components": [
          0.8313725490196079,
          0.7607843137254902,
          0.8823529411764706
        ],
        "alpha": 1,
        "hex": "#D4C2E1"
      },
      "$extensions": {
        "com.figma.variableId": "VariableID:1:2",
        "com.figma.isOverride": true
      }
    },
    "200": {
      "$type": "color",
      "$value": {
        "colorSpace": "srgb",
        "components": [
          0.7176470588235294,
          0.6,
          0.803921568627451
        ],
        "alpha": 1,
        "hex": "#B799CD"
      },
      "$extensions": {
        "com.figma.variableId": "VariableID:1:3",
        "com.figma.isOverride": true
      }
    },
    "300": {
      "$type": "color",
      "$value": {
        "colorSpace": "srgb",
        "components": [
          0.6039215686274509,
          0.4392156862745098,
          0.7254901960784313
        ],
        "alpha": 1,
        "hex": "#9A70B9"
      },
      "$extensions": {
        "com.figma.variableId": "VariableID:1:4",
        "com.figma.isOverride": true
      }
    },
    "400": {
      "$type": "color",
      "$value": {
        "colorSpace": "srgb",
        "components": [
          0.43529411764705883,
          0.2,
          0.6078431372549019
        ],
        "alpha": 1,
        "hex": "#6F339B"
      },
      "$extensions": {
        "com.figma.variableId": "VariableID:1:5",
        "com.figma.isOverride": true
      }
    },
    "500": {
      "$type": "color",
      "$value": {
        "colorSpace": "srgb",
        "components": [
          0.29411764705882354,
          0,
          0.5098039215686274
        ],
        "alpha": 1,
        "hex": "#4B0082"
      },
      "$extensions": {
        "com.figma.variableId": "VariableID:1:6",
        "com.figma.isOverride": true
      }
    },
    "600": {
      "$type": "color",
      "$value": {
        "colorSpace": "srgb",
        "components": [
          0.23529411764705882,
          0,
          0.40784313725490196
        ],
        "alpha": 1,
        "hex": "#3C0068"
      },
      "$extensions": {
        "com.figma.variableId": "VariableID:1:7",
        "com.figma.isOverride": true
      }
    },
    "700": {
      "$type": "color",
      "$value": {
        "colorSpace": "srgb",
        "components": [
          0.16470588235294117,
          0,
          0.28627450980392155
        ],
        "alpha": 1,
        "hex": "#2A0049"
      },
      "$extensions": {
        "com.figma.variableId": "VariableID:1:8",
        "com.figma.isOverride": true
      }
    },
    "800": {
      "$type": "color",
      "$value": {
        "colorSpace": "srgb",
        "components": [
          0.11764705882352941,
          0,
          0.20392156862745098
        ],
        "alpha": 1,
        "hex": "#1E0034"
      },
      "$extensions": {
        "com.figma.variableId": "VariableID:1:9",
        "com.figma.isOverride": true
      }
    },
    "900": {
      "$type": "color",
      "$value": {
        "colorSpace": "srgb",
        "components": [
          0.07058823529411765,
          0,
          0.12156862745098039
        ],
        "alpha": 1,
        "hex": "#12001F"
      },
      "$extensions": {
        "com.figma.variableId": "VariableID:1:10",
        "com.figma.isOverride": true
      }
    },
    "950": {
      "$type": "color",
      "$value": {
        "colorSpace": "srgb",
        "components": [
          0.023529411764705882,
          0,
          0.0392156862745098
        ],
        "alpha": 1,
        "hex": "#06000A"
      },
      "$extensions": {
        "com.figma.variableId": "VariableID:1:11",
        "com.figma.isOverride": true
      }
    }
  },
  "$extensions": {
    "com.figma.modeName": "Value"
  }
}

Open Indigo in the generator How the scale is built