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#183d69 color: Blue Opal

#183d69 is rgb(24, 61, 105) in RGB and oklch(35.778% 0.08741 254.573) in OKLCH. Every other format, shade and contrast value is below.

Read as HEX

213°
100%

35.8%
0.087
255°
  • Blue
  • Dark
  • Vivid
  • Deep
  • Cool
  • ≈ Charcoal
  • sky-900
  • Black 59%

Inside sRGB: displays the same on any screen.

White text
10.99:1Readable · AA
Lc -99
Black text
1.91:1Hard to read
Lc 9

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About #183d69

#183d69 is a deep dark blue color. In OKLCH it has 35.8% lightness, 0.087 chroma and a hue of 255°.

Inside sRGB: displays the same on any screen.

White text on it reaches 10.99:1 contrast and black text 1.91:1, 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: #183d69 mixed with white

  1. 183d69
  2. 2e4f78
  3. 436186
  4. 597495
  5. 6f87a4
  6. 869ab3
  7. 9dadc2
  8. b5c1d1
  9. cdd6e0
  10. e6eaf0

Darker: #183d69 mixed with black

  1. 183d69
  2. 13345a
  3. 0f2b4c
  4. 0a223e
  5. 071a31
  6. 041224
  7. 020a18
  8. 01040c
  9. 000104
  10. 000000

Calmer: #183d69 with less saturation

  1. 183d69
  2. 1d3d65
  3. 213e60
  4. 253e5c
  5. 293e58
  6. 2d3e53
  7. 303e4f
  8. 333d4a
  9. 363d46
  10. 393d41

Questions about #183d69

What color is #183d69?

#183d69 is deep dark blue. The closest named color is Blue Opal. In RGB it is rgb(24, 61, 105), in HSL hsl(212.59, 62.79%, 25.29%) and in OKLCH oklch(35.778% 0.08741 254.573).

What colors go well with #183d69?

The complementary color of #183d69 is #573400. For a calmer combination use the analogous colors #00455e and #383468. The triadic partners are #62262e and #274611.

Is white or black text more readable on #183d69?

White text reads better on #183d69: white gives a contrast ratio of 10.99:1 and black gives 1.91:1. WCAG AA asks for at least 4.5:1 for body text.

Is #183d69 a warm or cool color?

#183d69 is a cool color. In OKLCH its hue is 255 degrees, its lightness 35.8% and its chroma 0.087.