#183156#183156

#183156 is a dark, moderate blue. Relative luminance 0.031; OKLCH L 31.4% C 0.074 H 258.1°. Best body text is #FFFFFF at 13.02:1 contrast (WCAG AA passes).

Color values

HEX	#183156
RGB	rgb(24, 49, 86)
HSL	hsl(216, 56%, 22%)
HSV	hsv(216, 72%, 34%)
CMYK	cmyk(72.1%, 43%, 0%, 66.3%)
CIE-LAB	lab(20.29, 4.24, -25.28)
CIE-LCH	lch(20.29, 25.63, 279.53°)
OKLab	oklab(31.4% -0.0151 -0.072)
OKLCH	oklch(31.4% 0.074 258.1)
XYZ	xyz(3.1541, 3.0624, 9.2272)
Luminance	0.0306 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183156 #563D18

analogous

#185056 #183156 #1E1856

triadic

#183156 #561831 #315618

tetradic

#183156 #561850 #563D18 #18561E

square

#183156 #561850 #563D18 #18561E

split-complementary

#183156 #561E18 #505618

monochromatic

#070E18 #0B1626 #183156 #254C86 #3368B6

Accessibility & contrast

On white

13.02

#183156 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.61

#183156 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183156

13.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183156	#FFFFFF	#000000	##FFFFFF
##183156	1.00	13.02	1.61	13.02
#FFFFFF	13.02	1.00	21.00	1.00
#000000	1.61	21.00	1.00	21.00
##FFFFFF	13.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#203457

Deuteranopia (green-blind)

#172E55

Tritanopia (blue-blind)

#00393F

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #183156;
/* rgb */ color: rgb(24, 49, 86);
/* oklch */ color: oklch(31.4% 0.074 258.1);

Tailwind

colors: {
  custom: {
    50: '#5d6886',
    500: '#183156',
    950: '#000000',
  },
}

SCSS

$custom: #183156;
$custom-light: #5d6886;
$custom-dark: #000000;

JSON

{
  "hex": "#183156",
  "rgb": {
    "r": 24,
    "g": 49,
    "b": 86
  },
  "hsl": {
    "h": 215.806,
    "s": 56.364,
    "l": 21.569
  },
  "oklch": {
    "l": 0.31403,
    "c": 0.07354,
    "h": 258.1
  },
  "luminance": 0.03063
}

Semantic roles & 50–950 ramp

primary

#183156

secondary

#8D6D3D

accent

#A348E0

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#04060B

muted

#797A7C

Preview Lab

Preview with #183156

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

Preview Lab → · Contrast checker → · Palette generator →