#0D183B#0D183B

#0D183B is a very dark, moderate blue. Relative luminance 0.011; OKLCH L 22.3% C 0.069 H 267.4°. Best body text is #FFFFFF at 17.34:1 contrast (WCAG AA passes).

Color values

HEX	#0D183B
RGB	rgb(13, 24, 59)
HSL	hsl(226, 64%, 14%)
HSV	hsv(226, 78%, 23%)
CMYK	cmyk(78%, 59.3%, 0%, 76.9%)
CIE-LAB	lab(9.44, 9.37, -24.11)
CIE-LCH	lch(9.44, 25.86, 291.24°)
OKLab	oklab(22.27% -0.0031 -0.0692)
OKLCH	oklch(22.27% 0.069 267.4)
XYZ	xyz(1.2818, 1.0545, 4.2728)
Luminance	0.0106 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0D183B #3B300D

analogous

#0D2F3B #0D183B #190D3B

triadic

#0D183B #3B0D18 #183B0D

tetradic

#0D183B #3B0D2F #3B300D #0D3B19

square

#0D183B #3B0D2F #3B300D #0D3B19

split-complementary

#0D183B #3B190D #2F3B0D

monochromatic

#060A19 #060A19 #0D183B #182C6D #23419F

Accessibility & contrast

On white

17.34

#0D183B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.21

#0D183B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0D183B

17.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0D183B	#FFFFFF	#000000	##FFFFFF
##0D183B	1.00	17.34	1.21	17.34
#FFFFFF	17.34	1.00	21.00	1.00
#000000	1.21	21.00	1.00	21.00
##FFFFFF	17.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#041D3C

Deuteranopia (green-blind)

#00183A

Tritanopia (blue-blind)

#002026

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #0d183b;
/* rgb */ color: rgb(13, 24, 59);
/* oklch */ color: oklch(22.3% 0.069 267.4);

Tailwind

colors: {
  custom: {
    50: '#525471',
    500: '#0d183b',
    950: '#000000',
  },
}

SCSS

$custom: #0d183b;
$custom-light: #525471;
$custom-dark: #000000;

JSON

{
  "hex": "#0d183b",
  "rgb": {
    "r": 13,
    "g": 24,
    "b": 59
  },
  "hsl": {
    "h": 225.652,
    "s": 63.889,
    "l": 14.118
  },
  "oklch": {
    "l": 0.2227,
    "c": 0.06929,
    "h": 267.4
  },
  "luminance": 0.01055
}

Semantic roles & 50–950 ramp

primary

#0D183B

secondary

#77652D

accent

#BF41E7

background

#F4F4F6

surface

#E7E7EC

border

#C3C3C7

text

#020207

muted

#78787A

Preview Lab

Preview with #0D183B

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

Preview Lab → · Contrast checker → · Palette generator →