#183F3D#183F3D

#183F3D is a dark, muted teal. Relative luminance 0.041; OKLCH L 33.9% C 0.044 H 190.7°. Best body text is #FFFFFF at 11.56:1 contrast (WCAG AA passes).

Color values

HEX	#183F3D
RGB	rgb(24, 63, 61)
HSL	hsl(177, 45%, 17%)
HSV	hsv(177, 62%, 25%)
CMYK	cmyk(61.9%, 0%, 3.2%, 75.3%)
CIE-LAB	lab(23.95, -14.27, -2.95)
CIE-LCH	lch(23.95, 14.57, 191.68°)
OKLab	oklab(33.91% -0.0433 -0.0082)
OKLCH	oklch(33.91% 0.044 190.7)
XYZ	xyz(2.9961, 4.0858, 5.0447)
Luminance	0.0409 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183F3D #3F181A

analogous

#183F2A #183F3D #182E3F

triadic

#183F3D #3D183F #3F3D18

tetradic

#183F3D #2A183F #3F181A #2E3F18

square

#183F3D #2A183F #3F181A #2E3F18

split-complementary

#183F3D #3F182E #3F2A18

monochromatic

#081615 #081615 #183F3D #296B68 #3A9893

Accessibility & contrast

On white

11.56

#183F3D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#183F3D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183F3D

11.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183F3D	#FFFFFF	#000000	##FFFFFF
##183F3D	1.00	11.56	1.82	11.56
#FFFFFF	11.56	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B3C3D

Deuteranopia (green-blind)

#35373D

Tritanopia (blue-blind)

#00413E

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #183f3d;
/* rgb */ color: rgb(24, 63, 61);
/* oklch */ color: oklch(33.9% 0.044 190.7);

Tailwind

colors: {
  custom: {
    50: '#5a7472',
    500: '#183f3d',
    950: '#000000',
  },
}

SCSS

$custom: #183f3d;
$custom-light: #5a7472;
$custom-dark: #000000;

JSON

{
  "hex": "#183f3d",
  "rgb": {
    "r": 24,
    "g": 63,
    "b": 61
  },
  "hsl": {
    "h": 176.923,
    "s": 44.828,
    "l": 17.059
  },
  "oklch": {
    "l": 0.33912,
    "c": 0.04406,
    "h": 190.7
  },
  "luminance": 0.04086
}

Semantic roles & 50–950 ramp

primary

#183F3D

secondary

#753D40

accent

#535AD5

background

#F5F7F6

surface

#E9EDEC

border

#C5C8C7

text

#040808

muted

#797B7B

Preview Lab

Preview with #183F3D

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

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