#183D3D#183D3D

#183D3D is a dark, muted teal. Relative luminance 0.039; OKLCH L 33.3% C 0.042 H 195.3°. Best body text is #FFFFFF at 11.84:1 contrast (WCAG AA passes).

Color values

HEX	#183D3D
RGB	rgb(24, 61, 61)
HSL	hsl(180, 44%, 17%)
HSV	hsv(180, 61%, 24%)
CMYK	cmyk(60.7%, 0%, 0%, 76.1%)
CIE-LAB	lab(23.23, -13.09, -4.02)
CIE-LCH	lch(23.23, 13.69, 197.08°)
OKLab	oklab(33.33% -0.0406 -0.0111)
OKLCH	oklch(33.33% 0.042 195.3)
XYZ	xyz(2.8874, 3.8683, 5.0085)
Luminance	0.0387 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183D3D #3D1818

analogous

#183D2B #183D3D #182B3D

triadic

#183D3D #3D183D #3D3D18

tetradic

#183D3D #2B183D #3D1818 #2B3D18

square

#183D3D #2B183D #3D1818 #2B3D18

split-complementary

#183D3D #3D182B #3D2B18

monochromatic

#091616 #091616 #183D3D #296969 #3B9595

Accessibility & contrast

On white

11.84

#183D3D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#183D3D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183D3D

11.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183D3D	#FFFFFF	#000000	##FFFFFF
##183D3D	1.00	11.84	1.77	11.84
#FFFFFF	11.84	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#393A3D

Deuteranopia (green-blind)

#33353D

Tritanopia (blue-blind)

#003F3D

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #183d3d;
/* rgb */ color: rgb(24, 61, 61);
/* oklch */ color: oklch(33.3% 0.042 195.3);

Tailwind

colors: {
  custom: {
    50: '#597272',
    500: '#183d3d',
    950: '#000000',
  },
}

SCSS

$custom: #183d3d;
$custom-light: #597272;
$custom-dark: #000000;

JSON

{
  "hex": "#183d3d",
  "rgb": {
    "r": 24,
    "g": 61,
    "b": 61
  },
  "hsl": {
    "h": 180,
    "s": 43.529,
    "l": 16.667
  },
  "oklch": {
    "l": 0.33329,
    "c": 0.04211,
    "h": 195.3
  },
  "luminance": 0.03869
}

Semantic roles & 50–950 ramp

primary

#183D3D

secondary

#733D3D

accent

#5555D3

background

#F5F6F6

surface

#E9ECEC

border

#C5C7C7

text

#040808

muted

#797B7B

Preview Lab

Preview with #183D3D

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

Preview Lab → · Contrast checker → · Palette generator →