#183F3E#183F3E

#183F3E is a dark, muted teal. Relative luminance 0.041; OKLCH L 34.0% C 0.044 H 193.0°. Best body text is #FFFFFF at 11.54:1 contrast (WCAG AA passes).

Color values

HEX	#183F3E
RGB	rgb(24, 63, 62)
HSL	hsl(178, 45%, 17%)
HSV	hsv(178, 62%, 25%)
CMYK	cmyk(61.9%, 0%, 1.6%, 75.3%)
CIE-LAB	lab(23.99, -13.94, -3.56)
CIE-LCH	lch(23.99, 14.39, 194.32°)
OKLab	oklab(33.95% -0.0428 -0.0099)
OKLCH	oklch(33.95% 0.044 193)
XYZ	xyz(3.0233, 4.0967, 5.1879)
Luminance	0.0410 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183F3E #3F1819

analogous

#183F2B #183F3E #182D3F

triadic

#183F3E #3E183F #3F3E18

tetradic

#183F3E #2B183F #3F1819 #2D3F18

square

#183F3E #2B183F #3F1819 #2D3F18

split-complementary

#183F3E #3F182D #3F2B18

monochromatic

#081616 #081616 #183F3E #296B6A #3A9895

Accessibility & contrast

On white

11.54

#183F3E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#183F3E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183F3E

11.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183F3E	#FFFFFF	#000000	##FFFFFF
##183F3E	1.00	11.54	1.82	11.54
#FFFFFF	11.54	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B3C3E

Deuteranopia (green-blind)

#35373E

Tritanopia (blue-blind)

#00413F

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #183f3e;
/* rgb */ color: rgb(24, 63, 62);
/* oklch */ color: oklch(34.0% 0.044 193.0);

Tailwind

colors: {
  custom: {
    50: '#5a7473',
    500: '#183f3e',
    950: '#000000',
  },
}

SCSS

$custom: #183f3e;
$custom-light: #5a7473;
$custom-dark: #000000;

JSON

{
  "hex": "#183f3e",
  "rgb": {
    "r": 24,
    "g": 63,
    "b": 62
  },
  "hsl": {
    "h": 178.462,
    "s": 44.828,
    "l": 17.059
  },
  "oklch": {
    "l": 0.33952,
    "c": 0.0439,
    "h": 193
  },
  "luminance": 0.04097
}

Semantic roles & 50–950 ramp

primary

#183F3E

secondary

#753D3F

accent

#5357D5

background

#F5F7F6

surface

#E9EDEC

border

#C5C8C7

text

#040808

muted

#797B7B

Preview Lab

Preview with #183F3E

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

Preview Lab → · Contrast checker → · Palette generator →