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#183a69 color: Ateneo Blue

#183a69 is rgb(24, 58, 105) in RGB and oklch(35.026% 0.09111 257.196) in OKLCH. Every other format, shade and contrast value is below.

Read as HEX

215°
100%

35%
0.091
257°
  • Blue
  • Dark
  • Vivid
  • Deep
  • Cool
  • ≈ Charcoal
  • sky-900
  • Black 59%

Inside sRGB: displays the same on any screen.

White text
11.36:1Readable · AA
Lc -100
Black text
1.85:1Hard to read
Lc 8

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About #183a69

#183a69 is a deep dark blue color. In OKLCH it has 35% lightness, 0.091 chroma and a hue of 257°.

Inside sRGB: displays the same on any screen.

White text on it reaches 11.36:1 contrast and black text 1.85:1, so white text reads better.

The closest named color is Ateneo Blue (#003a6c). In Tailwind CSS the closest color is sky-900.

More dark blue colors

Lighter: #183a69 mixed with white

  1. 183a69
  2. 2d4c78
  3. 435f87
  4. 587295
  5. 6f85a4
  6. 8598b3
  7. 9dacc2
  8. b4c0d1
  9. cdd5e0
  10. e6eaf0

Darker: #183a69 mixed with black

  1. 183a69
  2. 13315a
  3. 0f284c
  4. 0a203e
  5. 071831
  6. 041024
  7. 020918
  8. 01040c
  9. 000104
  10. 000000

Calmer: #183a69 with less saturation

  1. 183a69
  2. 1c3a64
  3. 203b60
  4. 243b5b
  5. 283b57
  6. 2b3b52
  7. 2e3b4e
  8. 323b49
  9. 353b44
  10. 383b3f

Questions about #183a69

What color is #183a69?

#183a69 is deep dark blue. The closest named color is Ateneo Blue. In RGB it is rgb(24, 58, 105), in HSL hsl(214.81, 62.79%, 25.29%) and in OKLCH oklch(35.026% 0.09111 257.196).

What colors go well with #183a69?

The complementary color of #183a69 is #543200. For a calmer combination use the analogous colors #00425f and #393167. The triadic partners are #612329 and #21450f.

Is white or black text more readable on #183a69?

White text reads better on #183a69: white gives a contrast ratio of 11.36:1 and black gives 1.85:1. WCAG AA asks for at least 4.5:1 for body text.

Is #183a69 a warm or cool color?

#183a69 is a cool color. In OKLCH its hue is 257 degrees, its lightness 35% and its chroma 0.091.