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#183f65 color: Blue Opal

#183f65 is rgb(24, 63, 101) in RGB and oklch(36.021% 0.07932 250.497) in OKLCH. Every other format, shade and contrast value is below.

Read as HEX

210°
100%

36%
0.079
250°
  • Blue
  • Dark
  • Soft
  • Cool
  • ≈ Charcoal
  • sky-900
  • Black 60%

Inside sRGB: displays the same on any screen.

White text
10.84:1Readable · AA
Lc -99
Black text
1.94:1Hard to read
Lc 9

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About #183f65

#183f65 is a soft dark blue color. In OKLCH it has 36% lightness, 0.079 chroma and a hue of 250°.

Inside sRGB: displays the same on any screen.

White text on it reaches 10.84:1 contrast and black text 1.94:1, 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: #183f65 mixed with white

  1. 183f65
  2. 2e5174
  3. 446383
  4. 5a7592
  5. 7088a1
  6. 869bb0
  7. 9eaec0
  8. b5c2d0
  9. cdd6df
  10. e6eaef

Darker: #183f65 mixed with black

  1. 183f65
  2. 133557
  3. 0f2c49
  4. 0a233c
  5. 071b2f
  6. 041222
  7. 020a17
  8. 01040c
  9. 000103
  10. 000000

Calmer: #183f65 with less saturation

  1. 183f65
  2. 1d3f61
  3. 223f5d
  4. 263f59
  5. 2a3f55
  6. 2d3f51
  7. 313f4e
  8. 343e49
  9. 373e45
  10. 3a3e41

Questions about #183f65

What color is #183f65?

#183f65 is soft dark blue. The closest named color is Blue Opal. In RGB it is rgb(24, 63, 101), in HSL hsl(209.61, 61.6%, 24.51%) and in OKLCH oklch(36.021% 0.07932 250.497).

What colors go well with #183f65?

The complementary color of #183f65 is #573400. For a calmer combination use the analogous colors #00465a and #363766. The triadic partners are #5f2933 and #2e4514.

Is white or black text more readable on #183f65?

White text reads better on #183f65: white gives a contrast ratio of 10.84:1 and black gives 1.94:1. WCAG AA asks for at least 4.5:1 for body text.

Is #183f65 a warm or cool color?

#183f65 is a cool color. In OKLCH its hue is 250 degrees, its lightness 36% and its chroma 0.079.