#183A3D#183A3D

#183A3D is a dark, muted teal. Relative luminance 0.036; OKLCH L 32.5% C 0.040 H 203.1°. Best body text is #FFFFFF at 12.27:1 contrast (WCAG AA passes).

Color values

HEX	#183A3D
RGB	rgb(24, 58, 61)
HSL	hsl(185, 44%, 17%)
HSV	hsv(185, 61%, 24%)
CMYK	cmyk(60.7%, 4.9%, 0%, 76.1%)
CIE-LAB	lab(22.15, -11.28, -5.64)
CIE-LCH	lch(22.15, 12.61, 206.55°)
OKLab	oklab(32.46% -0.0365 -0.0156)
OKLCH	oklch(32.46% 0.04 203.1)
XYZ	xyz(2.7317, 3.5570, 4.9566)
Luminance	0.0356 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183A3D #3D1B18

analogous

#183D2E #183A3D #18283D

triadic

#183A3D #3D183A #3A3D18

tetradic

#183A3D #2E183D #3D1B18 #283D18

square

#183A3D #2E183D #3D1B18 #283D18

split-complementary

#183A3D #3D1828 #3D2E18

monochromatic

#091516 #091516 #183A3D #296469 #3B8E95

Accessibility & contrast

On white

12.27

#183A3D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#183A3D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183A3D

12.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183A3D	#FFFFFF	#000000	##FFFFFF
##183A3D	1.00	12.27	1.71	12.27
#FFFFFF	12.27	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#36383D

Deuteranopia (green-blind)

#30333D

Tritanopia (blue-blind)

#003C3B

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #183a3d;
/* rgb */ color: rgb(24, 58, 61);
/* oklch */ color: oklch(32.5% 0.040 203.1);

Tailwind

colors: {
  custom: {
    50: '#597072',
    500: '#183a3d',
    950: '#000000',
  },
}

SCSS

$custom: #183a3d;
$custom-light: #597072;
$custom-dark: #000000;

JSON

{
  "hex": "#183a3d",
  "rgb": {
    "r": 24,
    "g": 58,
    "b": 61
  },
  "hsl": {
    "h": 184.865,
    "s": 43.529,
    "l": 16.667
  },
  "oklch": {
    "l": 0.32457,
    "c": 0.03971,
    "h": 203.1
  },
  "luminance": 0.03557
}

Semantic roles & 50–950 ramp

primary

#183A3D

secondary

#73423D

accent

#5F55D3

background

#F5F6F6

surface

#E9ECEC

border

#C5C7C7

text

#040708

muted

#797A7B

Preview Lab

Preview with #183A3D

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

Preview Lab → · Contrast checker → · Palette generator →