#181E28#181E28

#181E28 is a very dark, muted blue. Relative luminance 0.013; OKLCH L 23.4% C 0.021 H 260.5°. Best body text is #FFFFFF at 16.73:1 contrast (WCAG AA passes).

Color values

HEX	#181E28
RGB	rgb(24, 30, 40)
HSL	hsl(218, 25%, 13%)
HSV	hsv(218, 40%, 16%)
CMYK	cmyk(40%, 25%, 0%, 84.3%)
CIE-LAB	lab(11.11, 0.36, -7.65)
CIE-LCH	lch(11.11, 7.66, 272.68°)
OKLab	oklab(23.37% -0.0035 -0.0211)
OKLCH	oklch(23.37% 0.021 260.5)
XYZ	xyz(1.2239, 1.2759, 2.1889)
Luminance	0.0128 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181E28 #282218

analogous

#182628 #181E28 #1A1828

triadic

#181E28 #28181E #1E2818

tetradic

#181E28 #281826 #282218 #18281A

square

#181E28 #281826 #282218 #18281A

split-complementary

#181E28 #281A18 #262818

monochromatic

#0B0E13 #0B0E13 #181E28 #2F3B4E #465774

Accessibility & contrast

On white

16.73

#181E28 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.26

#181E28 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181E28

16.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181E28	#FFFFFF	#000000	##FFFFFF
##181E28	1.00	16.73	1.26	16.73
#FFFFFF	16.73	1.00	21.00	1.00
#000000	1.26	21.00	1.00	21.00
##FFFFFF	16.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B1F28

Deuteranopia (green-blind)

#191D28

Tritanopia (blue-blind)

#132021

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #181e28;
/* rgb */ color: rgb(24, 30, 40);
/* oklch */ color: oklch(23.4% 0.021 260.5);

Tailwind

colors: {
  custom: {
    50: '#555961',
    500: '#181e28',
    950: '#000000',
  },
}

SCSS

$custom: #181e28;
$custom-light: #555961;
$custom-dark: #000000;

JSON

{
  "hex": "#181e28",
  "rgb": {
    "r": 24,
    "g": 30,
    "b": 40
  },
  "hsl": {
    "h": 217.5,
    "s": 25,
    "l": 12.549
  },
  "oklch": {
    "l": 0.23373,
    "c": 0.02136,
    "h": 260.5
  },
  "luminance": 0.01276
}

Semantic roles & 50–950 ramp

primary

#181E28

secondary

#5C5140

accent

#9F66C1

background

#F4F5F5

surface

#E8E9E9

border

#C4C5C5

text

#030305

muted

#787879

Preview Lab

Preview with #181E28

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

Preview Lab → · Contrast checker → · Palette generator →