#183258#183258

#183258 is a dark, moderate blue. Relative luminance 0.032; OKLCH L 31.8% C 0.075 H 257.9°. Best body text is #FFFFFF at 12.84:1 contrast (WCAG AA passes).

Color values

HEX	#183258
RGB	rgb(24, 50, 88)
HSL	hsl(216, 57%, 22%)
HSV	hsv(216, 73%, 35%)
CMYK	cmyk(72.7%, 43.2%, 0%, 65.5%)
CIE-LAB	lab(20.75, 4.35, -25.88)
CIE-LCH	lch(20.75, 26.24, 279.55°)
OKLab	oklab(31.8% -0.0158 -0.0737)
OKLCH	oklch(31.8% 0.075 257.9)
XYZ	xyz(3.2781, 3.1796, 9.6716)
Luminance	0.0318 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183258 #583E18

analogous

#185258 #183258 #1E1858

triadic

#183258 #581832 #325818

tetradic

#183258 #581852 #583E18 #18581E

square

#183258 #581852 #583E18 #18581E

split-complementary

#183258 #581E18 #525818

monochromatic

#070E18 #0B1728 #183258 #254D88 #3269B8

Accessibility & contrast

On white

12.84

#183258 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.64

#183258 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183258

12.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183258	#FFFFFF	#000000	##FFFFFF
##183258	1.00	12.84	1.64	12.84
#FFFFFF	12.84	1.00	21.00	1.00
#000000	1.64	21.00	1.00	21.00
##FFFFFF	12.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#21355A

Deuteranopia (green-blind)

#172F57

Tritanopia (blue-blind)

#003B40

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #183258;
/* rgb */ color: rgb(24, 50, 88);
/* oklch */ color: oklch(31.8% 0.075 257.9);

Tailwind

colors: {
  custom: {
    50: '#5d6987',
    500: '#183258',
    950: '#000000',
  },
}

SCSS

$custom: #183258;
$custom-light: #5d6987;
$custom-dark: #000000;

JSON

{
  "hex": "#183258",
  "rgb": {
    "r": 24,
    "g": 50,
    "b": 88
  },
  "hsl": {
    "h": 215.625,
    "s": 57.143,
    "l": 21.961
  },
  "oklch": {
    "l": 0.318,
    "c": 0.07538,
    "h": 257.9
  },
  "luminance": 0.0318
}

Semantic roles & 50–950 ramp

primary

#183258

secondary

#8F6E3D

accent

#A247E0

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#05060B

muted

#797A7C

Preview Lab

Preview with #183258

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

Preview Lab → · Contrast checker → · Palette generator →