#183373#183373

#183373 is a dark, moderate blue. Relative luminance 0.038; OKLCH L 34.1% C 0.115 H 264.0°. Best body text is #FFFFFF at 11.93:1 contrast (WCAG AA passes).

Color values

HEX	#183373
RGB	rgb(24, 51, 115)
HSL	hsl(222, 65%, 27%)
HSV	hsv(222, 79%, 45%)
CMYK	cmyk(79.1%, 55.7%, 0%, 54.9%)
CIE-LAB	lab(23.00, 14.84, -39.83)
CIE-LCH	lch(23.00, 42.51, 290.43°)
OKLab	oklab(34.14% -0.012 -0.1147)
OKLCH	oklch(34.14% 0.115 264)
XYZ	xyz(4.6539, 3.7991, 16.7044)
Luminance	0.0380 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183373 #735818

analogous

#186173 #183373 #2B1873

triadic

#183373 #731833 #337318

tetradic

#183373 #731861 #735818 #18732B

square

#183373 #731861 #735818 #18732B

split-complementary

#183373 #732B18 #617318

monochromatic

#050B19 #0D1D40 #183373 #2349A6 #3162D4

Accessibility & contrast

On white

11.93

#183373 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#183373 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183373

11.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183373	#FFFFFF	#000000	##FFFFFF
##183373	1.00	11.93	1.76	11.93
#FFFFFF	11.93	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#043B75

Deuteranopia (green-blind)

#003372

Tritanopia (blue-blind)

#00434D

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #183373;
/* rgb */ color: rgb(24, 51, 115);
/* oklch */ color: oklch(34.1% 0.115 264.0);

Tailwind

colors: {
  custom: {
    50: '#646a9c',
    500: '#183373',
    950: '#000000',
  },
}

SCSS

$custom: #183373;
$custom-light: #646a9c;
$custom-dark: #000000;

JSON

{
  "hex": "#183373",
  "rgb": {
    "r": 24,
    "g": 51,
    "b": 115
  },
  "hsl": {
    "h": 222.198,
    "s": 65.468,
    "l": 27.255
  },
  "oklch": {
    "l": 0.34142,
    "c": 0.11536,
    "h": 264
  },
  "luminance": 0.038
}

Semantic roles & 50–950 ramp

primary

#183373

secondary

#A8893F

accent

#B63FE8

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #183373

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

Preview Lab → · Contrast checker → · Palette generator →