#181E4F#181E4F

#181E4F is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.2% C 0.089 H 273.3°. Best body text is #FFFFFF at 15.70:1 contrast (WCAG AA passes).

Color values

HEX	#181E4F
RGB	rgb(24, 30, 79)
HSL	hsl(233, 53%, 20%)
HSV	hsv(233, 70%, 31%)
CMYK	cmyk(69.6%, 62%, 0%, 69%)
CIE-LAB	lab(13.75, 15.37, -31.06)
CIE-LCH	lch(13.75, 34.65, 296.32°)
OKLab	oklab(26.25% 0.0052 -0.0893)
OKLCH	oklch(26.25% 0.089 273.3)
XYZ	xyz(2.2518, 1.6871, 7.6026)
Luminance	0.0169 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181E4F #4F4918

analogous

#18394F #181E4F #2E184F

triadic

#181E4F #4F181E #1E4F18

tetradic

#181E4F #4F1839 #4F4918 #184F2E

square

#181E4F #4F1839 #4F4918 #184F2E

split-complementary

#181E4F #4F2E18 #394F18

monochromatic

#070917 #0A0C20 #181E4F #26307E #3542AD

Accessibility & contrast

On white

15.70

#181E4F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.34

#181E4F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181E4F

15.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181E4F	#FFFFFF	#000000	##FFFFFF
##181E4F	1.00	15.70	1.34	15.70
#FFFFFF	15.70	1.00	21.00	1.00
#000000	1.34	21.00	1.00	21.00
##FFFFFF	15.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002651

Deuteranopia (green-blind)

#00214E

Tritanopia (blue-blind)

#002A33

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #181e4f;
/* rgb */ color: rgb(24, 30, 79);
/* oklch */ color: oklch(26.2% 0.089 273.3);

Tailwind

colors: {
  custom: {
    50: '#5c5981',
    500: '#181e4f',
    950: '#000000',
  },
}

SCSS

$custom: #181e4f;
$custom-light: #5c5981;
$custom-dark: #000000;

JSON

{
  "hex": "#181e4f",
  "rgb": {
    "r": 24,
    "g": 30,
    "b": 79
  },
  "hsl": {
    "h": 233.455,
    "s": 53.398,
    "l": 20.196
  },
  "oklch": {
    "l": 0.26248,
    "c": 0.08943,
    "h": 273.3
  },
  "luminance": 0.01687
}

Semantic roles & 50–950 ramp

primary

#181E4F

secondary

#867E3D

accent

#CD4BDD

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #181E4F

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

Preview Lab → · Contrast checker → · Palette generator →