Black and Indigo

CSS Variables

:root {
  --color-a: #000000;
  --color-b: #380282;
  --color-a-rgb: 0, 0, 0;
  --color-b-rgb: 56, 2, 130;
}

JSON

{
  "name": "Black and Indigo",
  "colors": [
    {
      "name": "Black",
      "hex": "#000000",
      "rgb": [
        0,
        0,
        0
      ]
    },
    {
      "name": "Indigo",
      "hex": "#380282",
      "rgb": [
        56,
        2,
        130
      ]
    }
  ],
  "harmony": "Tonal Accent",
  "contrastRatio": 1.5
}

Do black and indigo go together?

Yes. Black and Indigo form a tonal accent color combination. One color is neutral and the other carries the chroma, which is a reliable formula for balanced design. The neutral gives the eye somewhere to rest while the chromatic color provides the focal point. The pairing has a WCAG contrast ratio of 1.50:1, which is below the AA threshold for text — use it for decorative purposes rather than text readability.

What is the contrast ratio between black and indigo?

The WCAG 2.1 contrast ratio between Black (#000000) and Indigo (#380282) is 1.50:1. This ratio is below AA. Use the pairing for backgrounds, borders, and decorative elements rather than text-on-background combinations.

How do I use black and indigo in design?

A safe starting point is the 60/30/10 rule: give one color about 60 percent of the surface area, the other about 30 percent, and reserve the remaining 10 percent for an accent or neutral. If one color is significantly darker, use it for text or structural elements and the lighter one for backgrounds. Test the result with our Contrast Checker if text is involved.

What are the hex and RGB values for black and indigo?

Black has the hex code #000000 and RGB values rgb(0, 0, 0). Indigo has the hex code #380282 and RGB values rgb(56, 2, 130). You can copy these directly into CSS or use the design tokens provided on this page.