#3F566F — Deep Blue

#3F566F is a deep blue in the Blue family. In practice it looks like a soft, dusty medium-dark navy blue, and it is also commonly known as Navy Blue, Sapphire. Below are all of its color space values, an 11-step scale, harmony palettes and accessibility data.

#3F566F color swatch, deep blue#3F566F
CSS Namedarkslategray (closest)

Tints and shades (50–950)

50#f4f6f8
100#e6eaef
200#d1dae4
300#b3c2d3
400#8ea5bd
500#748eab
600#637c97
700#506780
800#42566b
900#37485b
950#1f2a36

Accessibility

Contrast on white
7.58:1
Contrast on black
2.77:1
  • AA (4.5:1) on whitePass
  • AA Large (3:1) on whitePass
  • AAA (7:1) on whitePass
  • 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 0.004 251); /* #f4f6f8 */
  --brand-100: oklch(0.936 0.008 251); /* #e6eaef */
  --brand-200: oklch(0.885 0.016 251); /* #d1dae4 */
  --brand-300: oklch(0.808 0.029 251); /* #b3c2d3 */
  --brand-400: oklch(0.712 0.044 251); /* #8ea5bd */
  --brand-500: oklch(0.637 0.053 251); /* #748eab */
  --brand-600: oklch(0.577 0.051 251); /* #637c97 */
  --brand-700: oklch(0.505 0.048 251); /* #506780 */
  --brand-800: oklch(0.444 0.043 251); /* #42566b */
  --brand-900: oklch(0.396 0.039 251); /* #37485b */
  --brand-950: oklch(0.281 0.027 251); /* #1f2a36 */
}

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