#183357#183357

#183357 is a dark, moderate cyan. Relative luminance 0.033; OKLCH L 32.0% C 0.073 H 256.3°. Best body text is #FFFFFF at 12.73:1 contrast (WCAG AA passes).

Color values

HEX	#183357
RGB	rgb(24, 51, 87)
HSL	hsl(214, 57%, 22%)
HSV	hsv(214, 72%, 34%)
CMYK	cmyk(72.4%, 41.4%, 0%, 65.9%)
CIE-LAB	lab(21.02, 3.23, -24.79)
CIE-LCH	lch(21.02, 25.00, 277.43°)
OKLab	oklab(31.99% -0.0172 -0.0705)
OKLCH	oklch(31.99% 0.073 256.3)
XYZ	xyz(3.2802, 3.2496, 9.4693)
Luminance	0.0325 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183357 #573C18

analogous

#185357 #183357 #1D1857

triadic

#183357 #571833 #335718

tetradic

#183357 #571853 #573C18 #18571D

square

#183357 #571853 #573C18 #18571D

split-complementary

#183357 #571D18 #535718

monochromatic

#070E18 #0B1727 #183357 #254F87 #326BB7

Accessibility & contrast

On white

12.73

#183357 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#183357 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183357

12.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183357	#FFFFFF	#000000	##FFFFFF
##183357	1.00	12.73	1.65	12.73
#FFFFFF	12.73	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#233658

Deuteranopia (green-blind)

#1A3056

Tritanopia (blue-blind)

#003B40

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #183357;
/* rgb */ color: rgb(24, 51, 87);
/* oklch */ color: oklch(32.0% 0.073 256.3);

Tailwind

colors: {
  custom: {
    50: '#5d6a86',
    500: '#183357',
    950: '#000000',
  },
}

SCSS

$custom: #183357;
$custom-light: #5d6a86;
$custom-dark: #000000;

JSON

{
  "hex": "#183357",
  "rgb": {
    "r": 24,
    "g": 51,
    "b": 87
  },
  "hsl": {
    "h": 214.286,
    "s": 56.757,
    "l": 21.765
  },
  "oklch": {
    "l": 0.31987,
    "c": 0.07257,
    "h": 256.3
  },
  "luminance": 0.0325
}

Semantic roles & 50–950 ramp

primary

#183357

secondary

#8E6B3D

accent

#9F48E0

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#05060B

muted

#797A7C

Preview Lab

Preview with #183357

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

Preview Lab → · Contrast checker → · Palette generator →