#183F47#183F47

#183F47 is a dark, muted cyan. Relative luminance 0.042; OKLCH L 34.3% C 0.046 H 213.2°. Best body text is #FFFFFF at 11.41:1 contrast (WCAG AA passes).

Color values

HEX	#183F47
RGB	rgb(24, 63, 71)
HSL	hsl(190, 49%, 19%)
HSV	hsv(190, 66%, 28%)
CMYK	cmyk(66.2%, 11.3%, 0%, 72.2%)
CIE-LAB	lab(24.33, -10.88, -9.01)
CIE-LCH	lch(24.33, 14.13, 219.63°)
OKLab	oklab(34.35% -0.0382 -0.025)
OKLCH	oklch(34.35% 0.046 213.2)
XYZ	xyz(3.2911, 4.2038, 6.5980)
Luminance	0.0420 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183F47 #472018

analogous

#184737 #183F47 #182747

triadic

#183F47 #47183F #3F4718

tetradic

#183F47 #371847 #472018 #274718

square

#183F47 #371847 #472018 #274718

split-complementary

#183F47 #471827 #473718

monochromatic

#081417 #091619 #183F47 #276875 #3790A2

Accessibility & contrast

On white

11.41

#183F47 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#183F47 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183F47

11.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183F47	#FFFFFF	#000000	##FFFFFF
##183F47	1.00	11.41	1.84	11.41
#FFFFFF	11.41	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#393D47

Deuteranopia (green-blind)

#323847

Tritanopia (blue-blind)

#004241

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #183f47;
/* rgb */ color: rgb(24, 63, 71);
/* oklch */ color: oklch(34.3% 0.046 213.2);

Tailwind

colors: {
  custom: {
    50: '#5b747a',
    500: '#183f47',
    950: '#000000',
  },
}

SCSS

$custom: #183f47;
$custom-light: #5b747a;
$custom-dark: #000000;

JSON

{
  "hex": "#183f47",
  "rgb": {
    "r": 24,
    "g": 63,
    "b": 71
  },
  "hsl": {
    "h": 190.213,
    "s": 49.474,
    "l": 18.627
  },
  "oklch": {
    "l": 0.34345,
    "c": 0.04569,
    "h": 213.2
  },
  "luminance": 0.04204
}

Semantic roles & 50–950 ramp

primary

#183F47

secondary

#7E483D

accent

#664FD9

background

#F5F7F7

surface

#E9EDED

border

#C5C8C8

text

#040809

muted

#797B7B

Preview Lab

Preview with #183F47

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

Preview Lab → · Contrast checker → · Palette generator →