#181D2D#181D2D

#181D2D is a very dark, muted blue. Relative luminance 0.013; OKLCH L 23.4% C 0.032 H 270.5°. Best body text is #FFFFFF at 16.77:1 contrast (WCAG AA passes).

Color values

HEX	#181D2D
RGB	rgb(24, 29, 45)
HSL	hsl(226, 30%, 14%)
HSV	hsv(226, 47%, 18%)
CMYK	cmyk(46.7%, 35.6%, 0%, 82.4%)
CIE-LAB	lab(11.01, 2.84, -11.45)
CIE-LCH	lch(11.01, 11.79, 283.91°)
OKLab	oklab(23.38% 0.0003 -0.0319)
OKLCH	oklch(23.38% 0.032 270.5)
XYZ	xyz(1.2896, 1.2623, 2.6578)
Luminance	0.0126 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181D2D #2D2818

analogous

#18272D #181D2D #1D182D

triadic

#181D2D #2D181D #1D2D18

tetradic

#181D2D #2D1827 #2D2818 #182D1D

square

#181D2D #2D1827 #2D2818 #182D1D

split-complementary

#181D2D #2D1D18 #272D18

monochromatic

#0B0D14 #0B0D14 #181D2D #2D3755 #43507D

Accessibility & contrast

On white

16.77

#181D2D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.25

#181D2D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181D2D

16.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181D2D	#FFFFFF	#000000	##FFFFFF
##181D2D	1.00	16.77	1.25	16.77
#FFFFFF	16.77	1.00	21.00	1.00
#000000	1.25	21.00	1.00	21.00
##FFFFFF	16.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#181E2E

Deuteranopia (green-blind)

#161D2D

Tritanopia (blue-blind)

#122023

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #181d2d;
/* rgb */ color: rgb(24, 29, 45);
/* oklch */ color: oklch(23.4% 0.032 270.5);

Tailwind

colors: {
  custom: {
    50: '#555866',
    500: '#181d2d',
    950: '#000000',
  },
}

SCSS

$custom: #181d2d;
$custom-light: #555866;
$custom-dark: #000000;

JSON

{
  "hex": "#181d2d",
  "rgb": {
    "r": 24,
    "g": 29,
    "b": 45
  },
  "hsl": {
    "h": 225.714,
    "s": 30.435,
    "l": 13.529
  },
  "oklch": {
    "l": 0.23383,
    "c": 0.03191,
    "h": 270.5
  },
  "luminance": 0.01262
}

Semantic roles & 50–950 ramp

primary

#181D2D

secondary

#62593F

accent

#AE61C7

background

#F5F5F6

surface

#E9E9EB

border

#C5C5C6

text

#030305

muted

#78787A

Preview Lab

Preview with #181D2D

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

Preview Lab → · Contrast checker → · Palette generator →