#183B37#183B37

#183B37 is a dark, muted teal. Relative luminance 0.036; OKLCH L 32.5% C 0.041 H 185.5°. Best body text is #FFFFFF at 12.21:1 contrast (WCAG AA passes).

Color values

HEX	#183B37
RGB	rgb(24, 59, 55)
HSL	hsl(173, 42%, 16%)
HSV	hsv(173, 59%, 23%)
CMYK	cmyk(59.3%, 0%, 6.8%, 76.9%)
CIE-LAB	lab(22.29, -13.83, -1.39)
CIE-LCH	lch(22.29, 13.90, 185.73°)
OKLab	oklab(32.5% -0.0411 -0.004)
OKLCH	oklch(32.5% 0.041 185.5)
XYZ	xyz(2.6300, 3.5977, 4.1695)
Luminance	0.0360 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183B37 #3B181C

analogous

#183B26 #183B37 #182E3B

triadic

#183B37 #37183B #3B3718

tetradic

#183B37 #26183B #3B181C #2E3B18

square

#183B37 #26183B #3B181C #2E3B18

split-complementary

#183B37 #3B182E #3B2618

monochromatic

#091614 #091614 #183B37 #2A6760 #3B9288

Accessibility & contrast

On white

12.21

#183B37 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.72

#183B37 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183B37

12.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183B37	#FFFFFF	#000000	##FFFFFF
##183B37	1.00	12.21	1.72	12.21
#FFFFFF	12.21	1.00	21.00	1.00
#000000	1.72	21.00	1.00	21.00
##FFFFFF	12.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#383837

Deuteranopia (green-blind)

#323437

Tritanopia (blue-blind)

#043C3A

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #183b37;
/* rgb */ color: rgb(24, 59, 55);
/* oklch */ color: oklch(32.5% 0.041 185.5);

Tailwind

colors: {
  custom: {
    50: '#59716d',
    500: '#183b37',
    950: '#000000',
  },
}

SCSS

$custom: #183b37;
$custom-light: #59716d;
$custom-dark: #000000;

JSON

{
  "hex": "#183b37",
  "rgb": {
    "r": 24,
    "g": 59,
    "b": 55
  },
  "hsl": {
    "h": 173.143,
    "s": 42.169,
    "l": 16.275
  },
  "oklch": {
    "l": 0.32502,
    "c": 0.04125,
    "h": 185.5
  },
  "luminance": 0.03598
}

Semantic roles & 50–950 ramp

primary

#183B37

secondary

#713E43

accent

#5664D2

background

#F5F6F6

surface

#E9ECEB

border

#C5C7C6

text

#040707

muted

#797A7A

Preview Lab

Preview with #183B37

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

Preview Lab → · Contrast checker → · Palette generator →