#183777#183777

#183777 is a dark, moderate blue. Relative luminance 0.043; OKLCH L 35.4% C 0.116 H 262.6°. Best body text is #FFFFFF at 11.34:1 contrast (WCAG AA passes).

Color values

HEX	#183777
RGB	rgb(24, 55, 119)
HSL	hsl(220, 66%, 28%)
HSV	hsv(220, 80%, 47%)
CMYK	cmyk(79.8%, 53.8%, 0%, 53.3%)
CIE-LAB	lab(24.51, 13.64, -39.94)
CIE-LCH	lch(24.51, 42.20, 288.86°)
OKLab	oklab(35.39% -0.0149 -0.115)
OKLCH	oklch(35.39% 0.116 262.6)
XYZ	xyz(5.0715, 4.2579, 18.0038)
Luminance	0.0426 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183777 #775818

analogous

#186677 #183777 #281877

triadic

#183777 #771837 #377718

tetradic

#183777 #771866 #775818 #187728

square

#183777 #771866 #775818 #187728

split-complementary

#183777 #772818 #667718

monochromatic

#050C19 #0E1F44 #183777 #224FAA #3368D6

Accessibility & contrast

On white

11.34

#183777 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#183777 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183777

11.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183777	#FFFFFF	#000000	##FFFFFF
##183777	1.00	11.34	1.85	11.34
#FFFFFF	11.34	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C3F79

Deuteranopia (green-blind)

#003676

Tritanopia (blue-blind)

#004651

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #183777;
/* rgb */ color: rgb(24, 55, 119);
/* oklch */ color: oklch(35.4% 0.116 262.6);

Tailwind

colors: {
  custom: {
    50: '#656d9f',
    500: '#183777',
    950: '#000000',
  },
}

SCSS

$custom: #183777;
$custom-light: #656d9f;
$custom-dark: #000000;

JSON

{
  "hex": "#183777",
  "rgb": {
    "r": 24,
    "g": 55,
    "b": 119
  },
  "hsl": {
    "h": 220.421,
    "s": 66.434,
    "l": 28.039
  },
  "oklch": {
    "l": 0.35388,
    "c": 0.11593,
    "h": 262.6
  },
  "luminance": 0.04258
}

Semantic roles & 50–950 ramp

primary

#183777

secondary

#AC883F

accent

#B23EE9

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06070E

muted

#7A7A7E

Preview Lab

Preview with #183777

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

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