#183873#183873

#183873 is a dark, moderate blue. Relative luminance 0.043; OKLCH L 35.3% C 0.109 H 261.3°. Best body text is #FFFFFF at 11.34:1 contrast (WCAG AA passes).

Color values

HEX	#183873
RGB	rgb(24, 56, 115)
HSL	hsl(219, 65%, 27%)
HSV	hsv(219, 79%, 45%)
CMYK	cmyk(79.1%, 51.3%, 0%, 54.9%)
CIE-LAB	lab(24.51, 11.27, -37.38)
CIE-LCH	lch(24.51, 39.04, 286.78°)
OKLab	oklab(35.3% -0.0164 -0.1074)
OKLCH	oklch(35.3% 0.109 261.3)
XYZ	xyz(4.8843, 4.2598, 16.7811)
Luminance	0.0426 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183873 #735318

analogous

#186673 #183873 #251873

triadic

#183873 #731838 #387318

tetradic

#183873 #731866 #735318 #187325

square

#183873 #731866 #735318 #187325

split-complementary

#183873 #732518 #667318

monochromatic

#050C19 #0D1F40 #183873 #2351A6 #316BD4

Accessibility & contrast

On white

11.34

#183873 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#183873 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183873

11.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183873	#FFFFFF	#000000	##FFFFFF
##183873	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)

#163F75

Deuteranopia (green-blind)

#003672

Tritanopia (blue-blind)

#004650

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #183873;
/* rgb */ color: rgb(24, 56, 115);
/* oklch */ color: oklch(35.3% 0.109 261.3);

Tailwind

colors: {
  custom: {
    50: '#646e9c',
    500: '#183873',
    950: '#000000',
  },
}

SCSS

$custom: #183873;
$custom-light: #646e9c;
$custom-dark: #000000;

JSON

{
  "hex": "#183873",
  "rgb": {
    "r": 24,
    "g": 56,
    "b": 115
  },
  "hsl": {
    "h": 218.901,
    "s": 65.468,
    "l": 27.255
  },
  "oklch": {
    "l": 0.35298,
    "c": 0.10866,
    "h": 261.3
  },
  "luminance": 0.0426
}

Semantic roles & 50–950 ramp

primary

#183873

secondary

#A8833F

accent

#AD3FE8

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06070E

muted

#7A7A7E

Preview Lab

Preview with #183873

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

Preview Lab → · Contrast checker → · Palette generator →