#183D3C#183D3C

#183D3C is a dark, muted teal. Relative luminance 0.039; OKLCH L 33.3% C 0.042 H 192.9°. Best body text is #FFFFFF at 11.85:1 contrast (WCAG AA passes).

Color values

HEX	#183D3C
RGB	rgb(24, 61, 60)
HSL	hsl(178, 44%, 17%)
HSV	hsv(178, 61%, 24%)
CMYK	cmyk(60.7%, 0%, 1.6%, 76.1%)
CIE-LAB	lab(23.20, -13.42, -3.41)
CIE-LCH	lch(23.20, 13.84, 194.24°)
OKLab	oklab(33.29% -0.0411 -0.0094)
OKLCH	oklch(33.29% 0.042 192.9)
XYZ	xyz(2.8607, 3.8577, 4.8679)
Luminance	0.0386 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183D3C #3D1819

analogous

#183D2A #183D3C #182C3D

triadic

#183D3C #3C183D #3D3C18

tetradic

#183D3C #2A183D #3D1819 #2C3D18

square

#183D3C #2A183D #3D1819 #2C3D18

split-complementary

#183D3C #3D182C #3D2A18

monochromatic

#091616 #091616 #183D3C #296967 #3B9592

Accessibility & contrast

On white

11.85

#183D3C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#183D3C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183D3C

11.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183D3C	#FFFFFF	#000000	##FFFFFF
##183D3C	1.00	11.85	1.77	11.85
#FFFFFF	11.85	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#393A3C

Deuteranopia (green-blind)

#33353C

Tritanopia (blue-blind)

#003F3D

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #183d3c;
/* rgb */ color: rgb(24, 61, 60);
/* oklch */ color: oklch(33.3% 0.042 192.9);

Tailwind

colors: {
  custom: {
    50: '#597271',
    500: '#183d3c',
    950: '#000000',
  },
}

SCSS

$custom: #183d3c;
$custom-light: #597271;
$custom-dark: #000000;

JSON

{
  "hex": "#183d3c",
  "rgb": {
    "r": 24,
    "g": 61,
    "b": 60
  },
  "hsl": {
    "h": 178.378,
    "s": 43.529,
    "l": 16.667
  },
  "oklch": {
    "l": 0.33288,
    "c": 0.0422,
    "h": 192.9
  },
  "luminance": 0.03858
}

Semantic roles & 50–950 ramp

primary

#183D3C

secondary

#733D3F

accent

#5558D3

background

#F5F6F6

surface

#E9ECEC

border

#C5C7C7

text

#040807

muted

#797B7A

Preview Lab

Preview with #183D3C

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

Preview Lab → · Contrast checker → · Palette generator →