#0D183A#0D183A

#0D183A is a very dark, moderate blue. Relative luminance 0.010; OKLCH L 22.2% C 0.068 H 267.2°. Best body text is #FFFFFF at 17.37:1 contrast (WCAG AA passes).

Color values

HEX	#0D183A
RGB	rgb(13, 24, 58)
HSL	hsl(225, 63%, 14%)
HSV	hsv(225, 78%, 23%)
CMYK	cmyk(77.6%, 58.6%, 0%, 77.3%)
CIE-LAB	lab(9.35, 8.93, -23.52)
CIE-LCH	lch(9.35, 25.16, 290.78°)
OKLab	oklab(22.18% -0.0033 -0.0675)
OKLCH	oklch(22.18% 0.068 267.2)
XYZ	xyz(1.2561, 1.0442, 4.1375)
Luminance	0.0104 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0D183A #3A2F0D

analogous

#0D2F3A #0D183A #190D3A

triadic

#0D183A #3A0D18 #183A0D

tetradic

#0D183A #3A0D2F #3A2F0D #0D3A19

square

#0D183A #3A0D2F #3A2F0D #0D3A19

split-complementary

#0D183A #3A190D #2F3A0D

monochromatic

#060A19 #060A19 #0D183A #182D6C #23419E

Accessibility & contrast

On white

17.37

#0D183A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.21

#0D183A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0D183A

17.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0D183A	#FFFFFF	#000000	##FFFFFF
##0D183A	1.00	17.37	1.21	17.37
#FFFFFF	17.37	1.00	21.00	1.00
#000000	1.21	21.00	1.00	21.00
##FFFFFF	17.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#051C3B

Deuteranopia (green-blind)

#001839

Tritanopia (blue-blind)

#002026

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #0d183a;
/* rgb */ color: rgb(13, 24, 58);
/* oklch */ color: oklch(22.2% 0.068 267.2);

Tailwind

colors: {
  custom: {
    50: '#525470',
    500: '#0d183a',
    950: '#000000',
  },
}

SCSS

$custom: #0d183a;
$custom-light: #525470;
$custom-dark: #000000;

JSON

{
  "hex": "#0d183a",
  "rgb": {
    "r": 13,
    "g": 24,
    "b": 58
  },
  "hsl": {
    "h": 225.333,
    "s": 63.38,
    "l": 13.922
  },
  "oklch": {
    "l": 0.22181,
    "c": 0.06758,
    "h": 267.2
  },
  "luminance": 0.01044
}

Semantic roles & 50–950 ramp

primary

#0D183A

secondary

#76642D

accent

#BE41E6

background

#F4F4F6

surface

#E7E7EC

border

#C3C3C7

text

#020207

muted

#78787A

Preview Lab

Preview with #0D183A

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

Preview Lab → · Contrast checker → · Palette generator →