#0A243F#0A243F

#0A243F is a dark, moderate cyan. Relative luminance 0.017; OKLCH L 25.6% C 0.060 H 252.0°. Best body text is #FFFFFF at 15.71:1 contrast (WCAG AA passes).

Color values

HEX	#0A243F
RGB	rgb(10, 36, 63)
HSL	hsl(211, 73%, 14%)
HSV	hsv(211, 84%, 25%)
CMYK	cmyk(84.1%, 42.9%, 0%, 75.3%)
CIE-LAB	lab(13.74, 1.36, -20.06)
CIE-LCH	lch(13.74, 20.10, 273.87°)
OKLab	oklab(25.64% -0.0185 -0.0571)
OKLCH	oklch(25.64% 0.06 252)
XYZ	xyz(1.6529, 1.6850, 4.9398)
Luminance	0.0169 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A243F #3F250A

analogous

#0A3F3F #0A243F #0B0A3F

triadic

#0A243F #3F0A24 #243F0A

tetradic

#0A243F #3F0A3F #3F250A #0A3F0B

square

#0A243F #3F0A3F #3F250A #0A3F0B

split-complementary

#0A243F #3F0B0A #3F3F0A

monochromatic

#040F1A #040F1A #0A243F #124274 #1B60A9

Accessibility & contrast

On white

15.71

#0A243F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.34

#0A243F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A243F

15.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A243F	#FFFFFF	#000000	##FFFFFF
##0A243F	1.00	15.71	1.34	15.71
#FFFFFF	15.71	1.00	21.00	1.00
#000000	1.34	21.00	1.00	21.00
##FFFFFF	15.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#182640

Deuteranopia (green-blind)

#0F213E

Tritanopia (blue-blind)

#002A2E

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #0a243f;
/* rgb */ color: rgb(10, 36, 63);
/* oklch */ color: oklch(25.6% 0.060 252.0);

Tailwind

colors: {
  custom: {
    50: '#525e74',
    500: '#0a243f',
    950: '#000000',
  },
}

SCSS

$custom: #0a243f;
$custom-light: #525e74;
$custom-dark: #000000;

JSON

{
  "hex": "#0a243f",
  "rgb": {
    "r": 10,
    "g": 36,
    "b": 63
  },
  "hsl": {
    "h": 210.566,
    "s": 72.603,
    "l": 14.314
  },
  "oklch": {
    "l": 0.25642,
    "c": 0.06007,
    "h": 252
  },
  "luminance": 0.01685
}

Semantic roles & 50–950 ramp

primary

#0A243F

secondary

#7C5329

accent

#9638EF

background

#F4F5F7

surface

#E7E9ED

border

#C3C5C8

text

#020408

muted

#78797B

Preview Lab

Preview with #0A243F

Body copy rendered with the generated semantic roles for this colour.

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