#183675#183675

#183675 is a dark, moderate blue. Relative luminance 0.041; OKLCH L 35.0% C 0.114 H 262.8°. Best body text is #FFFFFF at 11.52:1 contrast (WCAG AA passes).

Color values

HEX	#183675
RGB	rgb(24, 54, 117)
HSL	hsl(221, 66%, 28%)
HSV	hsv(221, 79%, 46%)
CMYK	cmyk(79.5%, 53.8%, 0%, 54.1%)
CIE-LAB	lab(24.05, 13.52, -39.40)
CIE-LCH	lch(24.05, 41.65, 288.94°)
OKLab	oklab(34.99% -0.0143 -0.1134)
OKLCH	oklch(34.99% 0.114 262.8)
XYZ	xyz(4.9056, 4.1163, 17.3622)
Luminance	0.0412 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183675 #755718

analogous

#186475 #183675 #281875

triadic

#183675 #751836 #367518

tetradic

#183675 #751864 #755718 #187528

square

#183675 #751864 #755718 #187528

split-complementary

#183675 #752818 #647518

monochromatic

#050C19 #0E1F42 #183675 #224DA8 #3267D5

Accessibility & contrast

On white

11.52

#183675 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#183675 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183675

11.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183675	#FFFFFF	#000000	##FFFFFF
##183675	1.00	11.52	1.82	11.52
#FFFFFF	11.52	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C3E77

Deuteranopia (green-blind)

#003574

Tritanopia (blue-blind)

#004550

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #183675;
/* rgb */ color: rgb(24, 54, 117);
/* oklch */ color: oklch(35.0% 0.114 262.8);

Tailwind

colors: {
  custom: {
    50: '#646c9d',
    500: '#183675',
    950: '#000000',
  },
}

SCSS

$custom: #183675;
$custom-light: #646c9d;
$custom-dark: #000000;

JSON

{
  "hex": "#183675",
  "rgb": {
    "r": 24,
    "g": 54,
    "b": 117
  },
  "hsl": {
    "h": 220.645,
    "s": 65.957,
    "l": 27.647
  },
  "oklch": {
    "l": 0.34994,
    "c": 0.1143,
    "h": 262.8
  },
  "luminance": 0.04117
}

Semantic roles & 50–950 ramp

primary

#183675

secondary

#AA873F

accent

#B23FE9

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #183675

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

Preview Lab → · Contrast checker → · Palette generator →