#181A44#181A44

#181A44 is a very dark, moderate blue. Relative luminance 0.013; OKLCH L 24.4% C 0.078 H 276.9°. Best body text is #FFFFFF at 16.54:1 contrast (WCAG AA passes).

Color values

HEX	#181A44
RGB	rgb(24, 26, 68)
HSL	hsl(237, 48%, 18%)
HSV	hsv(237, 65%, 27%)
CMYK	cmyk(64.7%, 61.8%, 0%, 73.3%)
CIE-LAB	lab(11.62, 13.94, -26.90)
CIE-LCH	lch(11.62, 30.30, 297.40°)
OKLab	oklab(24.36% 0.0093 -0.0771)
OKLCH	oklch(24.36% 0.078 276.9)
XYZ	xyz(1.7891, 1.3502, 5.6341)
Luminance	0.0135 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 5.92

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181A44 #444218

analogous

#183044 #181A44 #2C1844

triadic

#181A44 #44181A #1A4418

tetradic

#181A44 #441830 #444218 #18442C

square

#181A44 #441830 #444218 #18442C

split-complementary

#181A44 #442C18 #304418

monochromatic

#080917 #080917 #181A44 #282B71 #383D9E

Accessibility & contrast

On white

16.54

#181A44 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#181A44 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181A44

16.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181A44	#FFFFFF	#000000	##FFFFFF
##181A44	1.00	16.54	1.27	16.54
#FFFFFF	16.54	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#012145

Deuteranopia (green-blind)

#001D43

Tritanopia (blue-blind)

#01242C

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #181a44;
/* rgb */ color: rgb(24, 26, 68);
/* oklch */ color: oklch(24.4% 0.078 276.9);

Tailwind

colors: {
  custom: {
    50: '#5a5678',
    500: '#181a44',
    950: '#000000',
  },
}

SCSS

$custom: #181a44;
$custom-light: #5a5678;
$custom-dark: #000000;

JSON

{
  "hex": "#181a44",
  "rgb": {
    "r": 24,
    "g": 26,
    "b": 68
  },
  "hsl": {
    "h": 237.273,
    "s": 47.826,
    "l": 18.039
  },
  "oklch": {
    "l": 0.24364,
    "c": 0.07766,
    "h": 276.9
  },
  "luminance": 0.0135
}

Semantic roles & 50–950 ramp

primary

#181A44

secondary

#7B783D

accent

#D150D7

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#040309

muted

#79787B

Preview Lab

Preview with #181A44

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

Preview Lab → · Contrast checker → · Palette generator →