#183138#183138

#183138 is a dark, muted cyan. Relative luminance 0.027; OKLCH L 29.6% C 0.033 H 218.0°. Best body text is #FFFFFF at 13.68:1 contrast (WCAG AA passes).

Color values

HEX	#183138
RGB	rgb(24, 49, 56)
HSL	hsl(193, 40%, 16%)
HSV	hsv(193, 57%, 22%)
CMYK	cmyk(57.1%, 12.5%, 0%, 78%)
CIE-LAB	lab(18.70, -7.31, -7.44)
CIE-LCH	lch(18.70, 10.43, 225.49°)
OKLab	oklab(29.62% -0.0263 -0.0205)
OKLCH	oklch(29.62% 0.033 218)
XYZ	xyz(2.1885, 2.6762, 4.1418)
Luminance	0.0268 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183138 #381F18

analogous

#18382F #183138 #182138

triadic

#183138 #381831 #313818

tetradic

#183138 #2F1838 #381F18 #213818

square

#183138 #2F1838 #381F18 #213818

split-complementary

#183138 #381821 #382F18

monochromatic

#091315 #091315 #183138 #2A5663 #3D7C8E

Accessibility & contrast

On white

13.68

#183138 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#183138 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183138

13.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183138	#FFFFFF	#000000	##FFFFFF
##183138	1.00	13.68	1.54	13.68
#FFFFFF	13.68	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C3038

Deuteranopia (green-blind)

#282C38

Tritanopia (blue-blind)

#073333

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #183138;
/* rgb */ color: rgb(24, 49, 56);
/* oklch */ color: oklch(29.6% 0.033 218.0);

Tailwind

colors: {
  custom: {
    50: '#58696e',
    500: '#183138',
    950: '#000000',
  },
}

SCSS

$custom: #183138;
$custom-light: #58696e;
$custom-dark: #000000;

JSON

{
  "hex": "#183138",
  "rgb": {
    "r": 24,
    "g": 49,
    "b": 56
  },
  "hsl": {
    "h": 193.125,
    "s": 40,
    "l": 15.686
  },
  "oklch": {
    "l": 0.29624,
    "c": 0.03342,
    "h": 218
  },
  "luminance": 0.02676
}

Semantic roles & 50–950 ramp

primary

#183138

secondary

#6E483E

accent

#7258D0

background

#F5F6F6

surface

#E9EBEB

border

#C5C6C6

text

#030607

muted

#787A7A

Preview Lab

Preview with #183138

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

Preview Lab → · Contrast checker → · Palette generator →