#0D183F#0D183F

#0D183F is a very dark, moderate blue. Relative luminance 0.011; OKLCH L 22.6% C 0.076 H 267.9°. Best body text is #FFFFFF at 17.22:1 contrast (WCAG AA passes).

Color values

HEX	#0D183F
RGB	rgb(13, 24, 63)
HSL	hsl(227, 66%, 15%)
HSV	hsv(227, 79%, 25%)
CMYK	cmyk(79.4%, 61.9%, 0%, 75.3%)
CIE-LAB	lab(9.78, 11.14, -26.40)
CIE-LCH	lch(9.78, 28.66, 292.88°)
OKLab	oklab(22.64% -0.0027 -0.076)
OKLCH	oklch(22.64% 0.076 267.9)
XYZ	xyz(1.3895, 1.0976, 4.8403)
Luminance	0.0110 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0D183F #3F340D

analogous

#0D313F #0D183F #1B0D3F

triadic

#0D183F #3F0D18 #183F0D

tetradic

#0D183F #3F0D31 #3F340D #0D3F1B

square

#0D183F #3F0D31 #3F340D #0D3F1B

split-complementary

#0D183F #3F1B0D #313F0D

monochromatic

#050A19 #050A19 #0D183F #172B72 #223FA4

Accessibility & contrast

On white

17.22

#0D183F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.22

#0D183F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0D183F

17.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0D183F	#FFFFFF	#000000	##FFFFFF
##0D183F	1.00	17.22	1.22	17.22
#FFFFFF	17.22	1.00	21.00	1.00
#000000	1.22	21.00	1.00	21.00
##FFFFFF	17.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001D40

Deuteranopia (green-blind)

#00193E

Tritanopia (blue-blind)

#002128

Achromatopsia (no color)

#1B1B1B

Design tokens & code

CSS

--color: #0d183f;
/* rgb */ color: rgb(13, 24, 63);
/* oklch */ color: oklch(22.6% 0.076 267.9);

Tailwind

colors: {
  custom: {
    50: '#535474',
    500: '#0d183f',
    950: '#000000',
  },
}

SCSS

$custom: #0d183f;
$custom-light: #535474;
$custom-dark: #000000;

JSON

{
  "hex": "#0d183f",
  "rgb": {
    "r": 13,
    "g": 24,
    "b": 63
  },
  "hsl": {
    "h": 226.8,
    "s": 65.789,
    "l": 14.902
  },
  "oklch": {
    "l": 0.22637,
    "c": 0.07602,
    "h": 267.9
  },
  "luminance": 0.01098
}

Semantic roles & 50–950 ramp

primary

#0D183F

secondary

#7B6A2D

accent

#C33FE9

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030208

muted

#78787B

Preview Lab

Preview with #0D183F

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

Preview Lab → · Contrast checker → · Palette generator →