#183159#183159

#183159 is a dark, moderate blue. Relative luminance 0.031; OKLCH L 31.6% C 0.078 H 259.4°. Best body text is #FFFFFF at 12.94:1 contrast (WCAG AA passes).

Color values

HEX	#183159
RGB	rgb(24, 49, 89)
HSL	hsl(217, 58%, 22%)
HSV	hsv(217, 73%, 35%)
CMYK	cmyk(73%, 44.9%, 0%, 65.1%)
CIE-LAB	lab(20.49, 5.48, -26.96)
CIE-LCH	lch(20.49, 27.51, 281.48°)
OKLab	oklab(31.62% -0.0144 -0.0769)
OKLCH	oklch(31.62% 0.078 259.4)
XYZ	xyz(3.2775, 3.1118, 9.8772)
Luminance	0.0311 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183159 #594018

analogous

#185259 #183159 #201859

triadic

#183159 #591831 #315918

tetradic

#183159 #591852 #594018 #185920

square

#183159 #591852 #594018 #185920

split-complementary

#183159 #592018 #525918

monochromatic

#060D18 #0B1629 #183159 #254C89 #3266B9

Accessibility & contrast

On white

12.94

#183159 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.62

#183159 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183159

12.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183159	#FFFFFF	#000000	##FFFFFF
##183159	1.00	12.94	1.62	12.94
#FFFFFF	12.94	1.00	21.00	1.00
#000000	1.62	21.00	1.00	21.00
##FFFFFF	12.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E355B

Deuteranopia (green-blind)

#142F58

Tritanopia (blue-blind)

#003A40

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #183159;
/* rgb */ color: rgb(24, 49, 89);
/* oklch */ color: oklch(31.6% 0.078 259.4);

Tailwind

colors: {
  custom: {
    50: '#5d6888',
    500: '#183159',
    950: '#000000',
  },
}

SCSS

$custom: #183159;
$custom-light: #5d6888;
$custom-dark: #000000;

JSON

{
  "hex": "#183159",
  "rgb": {
    "r": 24,
    "g": 49,
    "b": 89
  },
  "hsl": {
    "h": 216.923,
    "s": 57.522,
    "l": 22.157
  },
  "oklch": {
    "l": 0.31616,
    "c": 0.07824,
    "h": 259.4
  },
  "luminance": 0.03112
}

Semantic roles & 50–950 ramp

primary

#183159

secondary

#90703D

accent

#A647E1

background

#F5F6F8

surface

#E9EBF0

border

#C5C6CB

text

#05060B

muted

#797A7C

Preview Lab

Preview with #183159

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

Preview Lab → · Contrast checker → · Palette generator →