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#183f69 color: Blue Opal

#183f69 is rgb(24, 63, 105) in RGB and oklch(36.284% 0.08505 252.678) in OKLCH. Every other format, shade and contrast value is below.

Read as HEX

211°
100%

36.3%
0.085
253°
  • Blue
  • Dark
  • Vivid
  • Deep
  • Cool
  • ≈ Charcoal
  • sky-900
  • Black 59%

Inside sRGB: displays the same on any screen.

White text
10.75:1Readable · AA
Lc -99
Black text
1.95:1Hard to read
Lc 9

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About #183f69

#183f69 is a deep dark blue color. In OKLCH it has 36.3% lightness, 0.085 chroma and a hue of 253°.

Inside sRGB: displays the same on any screen.

White text on it reaches 10.75:1 contrast and black text 1.95:1, 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: #183f69 mixed with white

  1. 183f69
  2. 2e5178
  3. 446386
  4. 5a7595
  5. 7088a4
  6. 869bb3
  7. 9eaec2
  8. b5c2d1
  9. cdd6e0
  10. e6eaf0

Darker: #183f69 mixed with black

  1. 183f69
  2. 13355a
  3. 0f2c4c
  4. 0a233e
  5. 071b31
  6. 041224
  7. 020a18
  8. 01040c
  9. 000104
  10. 000000

Calmer: #183f69 with less saturation

  1. 183f69
  2. 1d3f65
  3. 223f61
  4. 263f5c
  5. 2a3f58
  6. 2e3f54
  7. 313f50
  8. 343f4b
  9. 383f47
  10. 3b3e42

Questions about #183f69

What color is #183f69?

#183f69 is deep dark blue. The closest named color is Blue Opal. In RGB it is rgb(24, 63, 105), in HSL hsl(211.11, 62.79%, 25.29%) and in OKLCH oklch(36.284% 0.08505 252.678).

What colors go well with #183f69?

The complementary color of #183f69 is #583500. For a calmer combination use the analogous colors #00475e and #383769. The triadic partners are #632831 and #2c4712.

Is white or black text more readable on #183f69?

White text reads better on #183f69: white gives a contrast ratio of 10.75:1 and black gives 1.95:1. WCAG AA asks for at least 4.5:1 for body text.

Is #183f69 a warm or cool color?

#183f69 is a cool color. In OKLCH its hue is 253 degrees, its lightness 36.3% and its chroma 0.085.