#183157#183157

#183157 is a dark, moderate blue. Relative luminance 0.031; OKLCH L 31.5% C 0.075 H 258.6°. Best body text is #FFFFFF at 13.00:1 contrast (WCAG AA passes).

Color values

HEX	#183157
RGB	rgb(24, 49, 87)
HSL	hsl(216, 57%, 22%)
HSV	hsv(216, 72%, 34%)
CMYK	cmyk(72.4%, 43.7%, 0%, 65.9%)
CIE-LAB	lab(20.36, 4.66, -25.84)
CIE-LCH	lch(20.36, 26.25, 280.21°)
OKLab	oklab(31.47% -0.0149 -0.0736)
OKLCH	oklch(31.47% 0.075 258.6)
XYZ	xyz(3.1947, 3.0786, 9.4408)
Luminance	0.0308 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183157 #573E18

analogous

#185157 #183157 #1E1857

triadic

#183157 #571831 #315718

tetradic

#183157 #571851 #573E18 #18571E

square

#183157 #571851 #573E18 #18571E

split-complementary

#183157 #571E18 #515718

monochromatic

#070E18 #0B1627 #183157 #254C87 #3267B7

Accessibility & contrast

On white

13.00

#183157 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.62

#183157 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183157

13.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183157	#FFFFFF	#000000	##FFFFFF
##183157	1.00	13.00	1.62	13.00
#FFFFFF	13.00	1.00	21.00	1.00
#000000	1.62	21.00	1.00	21.00
##FFFFFF	13.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#203459

Deuteranopia (green-blind)

#162E56

Tritanopia (blue-blind)

#003A3F

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #183157;
/* rgb */ color: rgb(24, 49, 87);
/* oklch */ color: oklch(31.5% 0.075 258.6);

Tailwind

colors: {
  custom: {
    50: '#5d6886',
    500: '#183157',
    950: '#000000',
  },
}

SCSS

$custom: #183157;
$custom-light: #5d6886;
$custom-dark: #000000;

JSON

{
  "hex": "#183157",
  "rgb": {
    "r": 24,
    "g": 49,
    "b": 87
  },
  "hsl": {
    "h": 216.19,
    "s": 56.757,
    "l": 21.765
  },
  "oklch": {
    "l": 0.31473,
    "c": 0.07511,
    "h": 258.6
  },
  "luminance": 0.03079
}

Semantic roles & 50–950 ramp

primary

#183157

secondary

#8E6E3D

accent

#A448E0

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#05060B

muted

#797A7C

Preview Lab

Preview with #183157

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

Preview Lab → · Contrast checker → · Palette generator →