#183E47#183E47

#183E47 is a dark, muted cyan. Relative luminance 0.041; OKLCH L 34.1% C 0.045 H 215.7°. Best body text is #FFFFFF at 11.55:1 contrast (WCAG AA passes).

Color values

HEX	#183E47
RGB	rgb(24, 62, 71)
HSL	hsl(191, 49%, 19%)
HSV	hsv(191, 66%, 28%)
CMYK	cmyk(66.2%, 12.7%, 0%, 72.2%)
CIE-LAB	lab(23.98, -10.27, -9.55)
CIE-LCH	lch(23.98, 14.03, 222.92°)
OKLab	oklab(34.06% -0.0369 -0.0265)
OKLCH	oklch(34.06% 0.045 215.7)
XYZ	xyz(3.2362, 4.0941, 6.5797)
Luminance	0.0409 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183E47 #472118

analogous

#184738 #183E47 #182647

triadic

#183E47 #47183E #3E4718

tetradic

#183E47 #381847 #472118 #264718

square

#183E47 #381847 #472118 #264718

split-complementary

#183E47 #471826 #473818

monochromatic

#081417 #091619 #183E47 #276675 #378EA2

Accessibility & contrast

On white

11.55

#183E47 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#183E47 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183E47

11.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183E47	#FFFFFF	#000000	##FFFFFF
##183E47	1.00	11.55	1.82	11.55
#FFFFFF	11.55	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#383C48

Deuteranopia (green-blind)

#313747

Tritanopia (blue-blind)

#004141

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #183e47;
/* rgb */ color: rgb(24, 62, 71);
/* oklch */ color: oklch(34.1% 0.045 215.7);

Tailwind

colors: {
  custom: {
    50: '#5b737a',
    500: '#183e47',
    950: '#000000',
  },
}

SCSS

$custom: #183e47;
$custom-light: #5b737a;
$custom-dark: #000000;

JSON

{
  "hex": "#183e47",
  "rgb": {
    "r": 24,
    "g": 62,
    "b": 71
  },
  "hsl": {
    "h": 191.489,
    "s": 49.474,
    "l": 18.627
  },
  "oklch": {
    "l": 0.34061,
    "c": 0.04547,
    "h": 215.7
  },
  "luminance": 0.04094
}

Semantic roles & 50–950 ramp

primary

#183E47

secondary

#7E493D

accent

#694FD9

background

#F5F6F7

surface

#E9ECED

border

#C5C7C8

text

#040809

muted

#797B7B

Preview Lab

Preview with #183E47

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

Preview Lab → · Contrast checker → · Palette generator →