#12183D#12183D

#12183D is a very dark, moderate blue. Relative luminance 0.011; OKLCH L 22.8% C 0.071 H 272.6°. Best body text is #FFFFFF at 17.16:1 contrast (WCAG AA passes).

Color values

HEX	#12183D
RGB	rgb(18, 24, 61)
HSL	hsl(232, 54%, 15%)
HSV	hsv(232, 70%, 24%)
CMYK	cmyk(70.5%, 60.7%, 0%, 76.1%)
CIE-LAB	lab(9.94, 11.27, -24.70)
CIE-LCH	lch(9.94, 27.15, 294.52°)
OKLab	oklab(22.8% 0.0032 -0.0708)
OKLCH	oklch(22.8% 0.071 272.6)
XYZ	xyz(1.4181, 1.1187, 4.5552)
Luminance	0.0112 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#12183D #3D3712

analogous

#122D3D #12183D #21123D

triadic

#12183D #3D1218 #183D12

tetradic

#12183D #3D122D #3D3712 #123D21

square

#12183D #3D122D #3D3712 #123D21

split-complementary

#12183D #3D2112 #2D3D12

monochromatic

#070918 #070918 #12183D #202B6C #2E3D9C

Accessibility & contrast

On white

17.16

#12183D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.22

#12183D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #12183D

17.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##12183D	#FFFFFF	#000000	##FFFFFF
##12183D	1.00	17.16	1.22	17.16
#FFFFFF	17.16	1.00	21.00	1.00
#000000	1.22	21.00	1.00	21.00
##FFFFFF	17.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#031D3E

Deuteranopia (green-blind)

#001A3C

Tritanopia (blue-blind)

#002127

Achromatopsia (no color)

#1B1B1B

Design tokens & code

CSS

--color: #12183d;
/* rgb */ color: rgb(18, 24, 61);
/* oklch */ color: oklch(22.8% 0.071 272.6);

Tailwind

colors: {
  custom: {
    50: '#555473',
    500: '#12183d',
    950: '#000000',
  },
}

SCSS

$custom: #12183d;
$custom-light: #555473;
$custom-dark: #000000;

JSON

{
  "hex": "#12183d",
  "rgb": {
    "r": 18,
    "g": 24,
    "b": 61
  },
  "hsl": {
    "h": 231.628,
    "s": 54.43,
    "l": 15.49
  },
  "oklch": {
    "l": 0.22796,
    "c": 0.07089,
    "h": 272.6
  },
  "luminance": 0.01119
}

Semantic roles & 50–950 ramp

primary

#12183D

secondary

#766D35

accent

#C94ADE

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030208

muted

#78787B

Preview Lab

Preview with #12183D

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

Preview Lab → · Contrast checker → · Palette generator →