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#183d66 color: Blue Opal

#183d66 is rgb(24, 61, 102) in RGB and oklch(35.574% 0.08302 253.156) in OKLCH. Every other format, shade and contrast value is below.

Read as HEX

212°
100%

35.6%
0.083
253°
  • Blue
  • Dark
  • Soft
  • Cool
  • ≈ Charcoal
  • sky-900
  • Black 60%

Inside sRGB: displays the same on any screen.

White text
11.06:1Readable · AA
Lc -99
Black text
1.90:1Hard to read
Lc 9

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About #183d66

#183d66 is a soft dark blue color. In OKLCH it has 35.6% lightness, 0.083 chroma and a hue of 253°.

Inside sRGB: displays the same on any screen.

White text on it reaches 11.06:1 contrast and black text 1.9:1, so white text reads better.

The closest named color is Blue Opal (#124168). In Tailwind CSS the closest color is sky-900.

More dark blue colors

Lighter: #183d66 mixed with white

  1. 183d66
  2. 2e4f75
  3. 436184
  4. 597493
  5. 6f86a2
  6. 869ab1
  7. 9dadc1
  8. b5c1d0
  9. cdd5e0
  10. e6eaef

Darker: #183d66 mixed with black

  1. 183d66
  2. 133458
  3. 0f2b4a
  4. 0a223c
  5. 071a2f
  6. 041223
  7. 020a17
  8. 01040c
  9. 000104
  10. 000000

Calmer: #183d66 with less saturation

  1. 183d66
  2. 1d3d62
  3. 213d5e
  4. 253d5a
  5. 293d56
  6. 2c3d51
  7. 303d4d
  8. 333d49
  9. 363d45
  10. 393c40

Questions about #183d66

What color is #183d66?

#183d66 is soft dark blue. The closest named color is Blue Opal. In RGB it is rgb(24, 61, 102), in HSL hsl(211.54, 61.9%, 24.71%) and in OKLCH oklch(35.574% 0.08302 253.156).

What colors go well with #183d66?

The complementary color of #183d66 is #563400. For a calmer combination use the analogous colors #00445b and #373566. The triadic partners are #60272f and #2a4512.

Is white or black text more readable on #183d66?

White text reads better on #183d66: white gives a contrast ratio of 11.06:1 and black gives 1.9:1. WCAG AA asks for at least 4.5:1 for body text.

Is #183d66 a warm or cool color?

#183d66 is a cool color. In OKLCH its hue is 253 degrees, its lightness 35.6% and its chroma 0.083.