#666BD5Indigo

#666BD5 is a indigo in the Indigo family. In practice it looks like a balanced medium indigo, and it is also commonly known as Indigo, Iris Blue. Below are all of its color space values, an 11-step scale, harmony palettes and accessibility data.

#666BD5
CSS Nameslateblue (closest)

Tints and shades (50–950)

50#f3f5fe
100#e5e9fb
200#d1d7fc
300#b2bbfd
400#8f98f7
500#767cee
600#666ad8
700#5356ba
800#45479d
900#3a3b87
950#212253

Accessibility

Contrast on white
4.54:1
Contrast on black
4.63:1
  • AA (4.5:1) on whitePass
  • AA Large (3:1) on whitePass
  • AAA (7:1) on whiteFail
  • AAA Large (4.5:1) on whitePass
  • UI components (3:1) on whitePass

Need a passing variant? Repair this color in the contrast checker.

Complementary palette

Analogous palette

Triadic palette

Copy-ready CSS

brand-scale.css
:root {
  --brand-50: oklch(0.971 0.012 278.1); /* #f3f5fe */
  --brand-100: oklch(0.936 0.025 278.1); /* #e5e9fb */
  --brand-200: oklch(0.885 0.052 278.1); /* #d1d7fc */
  --brand-300: oklch(0.808 0.094 278.1); /* #b2bbfd */
  --brand-400: oklch(0.712 0.139 278.1); /* #8f98f7 */
  --brand-500: oklch(0.637 0.168 278.1); /* #767cee */
  --brand-600: oklch(0.577 0.164 278.1); /* #666ad8 */
  --brand-700: oklch(0.505 0.154 278.1); /* #5356ba */
  --brand-800: oklch(0.444 0.137 278.1); /* #45479d */
  --brand-900: oklch(0.396 0.124 278.1); /* #3a3b87 */
  --brand-950: oklch(0.281 0.087 278.1); /* #212253 */
}

Explore other colors