#183D3B#183D3B

#183D3B is a dark, muted teal. Relative luminance 0.038; OKLCH L 33.2% C 0.042 H 190.6°. Best body text is #FFFFFF at 11.87:1 contrast (WCAG AA passes).

Color values

HEX	#183D3B
RGB	rgb(24, 61, 59)
HSL	hsl(177, 44%, 17%)
HSV	hsv(177, 61%, 24%)
CMYK	cmyk(60.7%, 0%, 3.3%, 76.1%)
CIE-LAB	lab(23.16, -13.74, -2.79)
CIE-LCH	lch(23.16, 14.02, 191.48°)
OKLab	oklab(33.25% -0.0417 -0.0078)
OKLCH	oklch(33.25% 0.042 190.6)
XYZ	xyz(2.8345, 3.8472, 4.7300)
Luminance	0.0385 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183D3B #3D181A

analogous

#183D29 #183D3B #182D3D

triadic

#183D3B #3B183D #3D3B18

tetradic

#183D3B #29183D #3D181A #2D3D18

square

#183D3B #29183D #3D181A #2D3D18

split-complementary

#183D3B #3D182D #3D2918

monochromatic

#091615 #091615 #183D3B #296965 #3B9590

Accessibility & contrast

On white

11.87

#183D3B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#183D3B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183D3B

11.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183D3B	#FFFFFF	#000000	##FFFFFF
##183D3B	1.00	11.87	1.77	11.87
#FFFFFF	11.87	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#393A3B

Deuteranopia (green-blind)

#33353B

Tritanopia (blue-blind)

#003F3C

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #183d3b;
/* rgb */ color: rgb(24, 61, 59);
/* oklch */ color: oklch(33.2% 0.042 190.6);

Tailwind

colors: {
  custom: {
    50: '#597270',
    500: '#183d3b',
    950: '#000000',
  },
}

SCSS

$custom: #183d3b;
$custom-light: #597270;
$custom-dark: #000000;

JSON

{
  "hex": "#183d3b",
  "rgb": {
    "r": 24,
    "g": 61,
    "b": 59
  },
  "hsl": {
    "h": 176.757,
    "s": 43.529,
    "l": 16.667
  },
  "oklch": {
    "l": 0.33247,
    "c": 0.04238,
    "h": 190.6
  },
  "luminance": 0.03847
}

Semantic roles & 50–950 ramp

primary

#183D3B

secondary

#733D40

accent

#555BD3

background

#F5F6F6

surface

#E9ECEC

border

#C5C7C7

text

#040807

muted

#797B7A

Preview Lab

Preview with #183D3B

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

Preview Lab → · Contrast checker → · Palette generator →