#183671#183671

#183671 is a dark, moderate blue. Relative luminance 0.040; OKLCH L 34.7% C 0.108 H 262.1°. Best body text is #FFFFFF at 11.63:1 contrast (WCAG AA passes).

Color values

HEX	#183671
RGB	rgb(24, 54, 113)
HSL	hsl(220, 65%, 27%)
HSV	hsv(220, 79%, 44%)
CMYK	cmyk(78.8%, 52.2%, 0%, 55.7%)
CIE-LAB	lab(23.75, 11.86, -37.33)
CIE-LCH	lch(23.75, 39.17, 287.62°)
OKLab	oklab(34.67% -0.0149 -0.1073)
OKLCH	oklch(34.67% 0.108 262.1)
XYZ	xyz(4.6754, 4.0243, 16.1499)
Luminance	0.0403 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183671 #715318

analogous

#186371 #183671 #261871

triadic

#183671 #711836 #367118

tetradic

#183671 #711863 #715318 #187126

square

#183671 #711863 #715318 #187126

split-complementary

#183671 #712618 #637118

monochromatic

#050C19 #0D1E3F #183671 #234EA3 #3067D3

Accessibility & contrast

On white

11.63

#183671 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#183671 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183671

11.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183671	#FFFFFF	#000000	##FFFFFF
##183671	1.00	11.63	1.81	11.63
#FFFFFF	11.63	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#133D73

Deuteranopia (green-blind)

#003570

Tritanopia (blue-blind)

#00444E

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #183671;
/* rgb */ color: rgb(24, 54, 113);
/* oklch */ color: oklch(34.7% 0.108 262.1);

Tailwind

colors: {
  custom: {
    50: '#636c9a',
    500: '#183671',
    950: '#000000',
  },
}

SCSS

$custom: #183671;
$custom-light: #636c9a;
$custom-dark: #000000;

JSON

{
  "hex": "#183671",
  "rgb": {
    "r": 24,
    "g": 54,
    "b": 113
  },
  "hsl": {
    "h": 219.775,
    "s": 64.964,
    "l": 26.863
  },
  "oklch": {
    "l": 0.34669,
    "c": 0.10835,
    "h": 262.1
  },
  "luminance": 0.04025
}

Semantic roles & 50–950 ramp

primary

#183671

secondary

#A6833E

accent

#AF40E8

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #183671

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

Preview Lab → · Contrast checker → · Palette generator →