#183577#183577

#183577 is a dark, moderate blue. Relative luminance 0.041; OKLCH L 34.9% C 0.119 H 263.6°. Best body text is #FFFFFF at 11.57:1 contrast (WCAG AA passes).

Color values

HEX	#183577
RGB	rgb(24, 53, 119)
HSL	hsl(222, 66%, 28%)
HSV	hsv(222, 80%, 47%)
CMYK	cmyk(79.8%, 55.5%, 0%, 53.3%)
CIE-LAB	lab(23.91, 15.06, -40.91)
CIE-LCH	lch(23.91, 43.59, 290.22°)
OKLab	oklab(34.93% -0.0133 -0.1178)
OKLCH	oklch(34.93% 0.119 263.6)
XYZ	xyz(4.9784, 4.0717, 17.9727)
Luminance	0.0407 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183577 #775A18

analogous

#186477 #183577 #2A1877

triadic

#183577 #771835 #357718

tetradic

#183577 #771864 #775A18 #18772A

square

#183577 #771864 #775A18 #18772A

split-complementary

#183577 #772A18 #647718

monochromatic

#050B19 #0E1E44 #183577 #224CAA #3365D6

Accessibility & contrast

On white

11.57

#183577 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#183577 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183577

11.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183577	#FFFFFF	#000000	##FFFFFF
##183577	1.00	11.57	1.81	11.57
#FFFFFF	11.57	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#043D79

Deuteranopia (green-blind)

#003576

Tritanopia (blue-blind)

#004550

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #183577;
/* rgb */ color: rgb(24, 53, 119);
/* oklch */ color: oklch(34.9% 0.119 263.6);

Tailwind

colors: {
  custom: {
    50: '#656b9f',
    500: '#183577',
    950: '#000000',
  },
}

SCSS

$custom: #183577;
$custom-light: #656b9f;
$custom-dark: #000000;

JSON

{
  "hex": "#183577",
  "rgb": {
    "r": 24,
    "g": 53,
    "b": 119
  },
  "hsl": {
    "h": 221.684,
    "s": 66.434,
    "l": 28.039
  },
  "oklch": {
    "l": 0.34933,
    "c": 0.1186,
    "h": 263.6
  },
  "luminance": 0.04072
}

Semantic roles & 50–950 ramp

primary

#183577

secondary

#AC8B3F

accent

#B53EE9

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #183577

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

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