#183B47#183B47

#183B47 is a dark, muted cyan. Relative luminance 0.038; OKLCH L 33.2% C 0.045 H 223.2°. Best body text is #FFFFFF at 11.96:1 contrast (WCAG AA passes).

Color values

HEX	#183B47
RGB	rgb(24, 59, 71)
HSL	hsl(195, 49%, 19%)
HSV	hsv(195, 66%, 28%)
CMYK	cmyk(66.2%, 16.9%, 0%, 72.2%)
CIE-LAB	lab(22.92, -8.39, -11.17)
CIE-LCH	lch(22.92, 13.97, 233.08°)
OKLab	oklab(33.21% -0.033 -0.0311)
OKLCH	oklch(33.21% 0.045 223.2)
XYZ	xyz(3.0775, 3.7768, 6.5268)
Luminance	0.0378 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183B47 #472418

analogous

#18473B #183B47 #182347

triadic

#183B47 #47183B #3B4718

tetradic

#183B47 #3B1847 #472418 #234718

square

#183B47 #3B1847 #472418 #234718

split-complementary

#183B47 #471823 #473B18

monochromatic

#081317 #091519 #183B47 #276175 #3787A2

Accessibility & contrast

On white

11.96

#183B47 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#183B47 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183B47

11.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183B47	#FFFFFF	#000000	##FFFFFF
##183B47	1.00	11.96	1.76	11.96
#FFFFFF	11.96	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#343A48

Deuteranopia (green-blind)

#2D3447

Tritanopia (blue-blind)

#003F3F

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #183b47;
/* rgb */ color: rgb(24, 59, 71);
/* oklch */ color: oklch(33.2% 0.045 223.2);

Tailwind

colors: {
  custom: {
    50: '#5a717a',
    500: '#183b47',
    950: '#000000',
  },
}

SCSS

$custom: #183b47;
$custom-light: #5a717a;
$custom-dark: #000000;

JSON

{
  "hex": "#183b47",
  "rgb": {
    "r": 24,
    "g": 59,
    "b": 71
  },
  "hsl": {
    "h": 195.319,
    "s": 49.474,
    "l": 18.627
  },
  "oklch": {
    "l": 0.33212,
    "c": 0.04536,
    "h": 223.2
  },
  "luminance": 0.03777
}

Semantic roles & 50–950 ramp

primary

#183B47

secondary

#7E4E3D

accent

#724FD9

background

#F5F6F7

surface

#E9ECED

border

#C5C7C8

text

#040709

muted

#797A7B

Preview Lab

Preview with #183B47

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

Preview Lab → · Contrast checker → · Palette generator →