#181E56#181E56

#181E56 is a dark, moderate blue. Relative luminance 0.018; OKLCH L 26.9% C 0.100 H 273.0°. Best body text is #FFFFFF at 15.45:1 contrast (WCAG AA passes).

Color values

HEX	#181E56
RGB	rgb(24, 30, 86)
HSL	hsl(234, 56%, 22%)
HSV	hsv(234, 72%, 34%)
CMYK	cmyk(72.1%, 65.1%, 0%, 66.3%)
CIE-LAB	lab(14.37, 18.19, -34.81)
CIE-LCH	lch(14.37, 39.28, 297.59°)
OKLab	oklab(26.9% 0.0052 -0.1003)
OKLCH	oklch(26.9% 0.1 273)
XYZ	xyz(2.5201, 1.7944, 9.0158)
Luminance	0.0180 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181E56 #565018

analogous

#183D56 #181E56 #311856

triadic

#181E56 #56181E #1E5618

tetradic

#181E56 #56183D #565018 #185631

square

#181E56 #56183D #565018 #185631

split-complementary

#181E56 #563118 #3D5618

monochromatic

#070818 #0B0D26 #181E56 #252F86 #333FB6

Accessibility & contrast

On white

15.45

#181E56 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.36

#181E56 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181E56

15.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181E56	#FFFFFF	#000000	##FFFFFF
##181E56	1.00	15.45	1.36	15.45
#FFFFFF	15.45	1.00	21.00	1.00
#000000	1.36	21.00	1.00	21.00
##FFFFFF	15.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002758

Deuteranopia (green-blind)

#002255

Tritanopia (blue-blind)

#002C36

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #181e56;
/* rgb */ color: rgb(24, 30, 86);
/* oklch */ color: oklch(26.9% 0.100 273.0);

Tailwind

colors: {
  custom: {
    50: '#5e5986',
    500: '#181e56',
    950: '#000000',
  },
}

SCSS

$custom: #181e56;
$custom-light: #5e5986;
$custom-dark: #000000;

JSON

{
  "hex": "#181e56",
  "rgb": {
    "r": 24,
    "g": 30,
    "b": 86
  },
  "hsl": {
    "h": 234.194,
    "s": 56.364,
    "l": 21.569
  },
  "oklch": {
    "l": 0.26901,
    "c": 0.10044,
    "h": 273
  },
  "luminance": 0.01795
}

Semantic roles & 50–950 ramp

primary

#181E56

secondary

#8D853D

accent

#D148E0

background

#F5F5F8

surface

#E9E9EF

border

#C5C5CA

text

#05030B

muted

#79787C

Preview Lab

Preview with #181E56

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

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