#183E42#183E42

#183E42 is a dark, muted teal. Relative luminance 0.040; OKLCH L 33.8% C 0.043 H 204.6°. Best body text is #FFFFFF at 11.62:1 contrast (WCAG AA passes).

Color values

HEX	#183E42
RGB	rgb(24, 62, 66)
HSL	hsl(186, 47%, 18%)
HSV	hsv(186, 64%, 26%)
CMYK	cmyk(63.6%, 6.1%, 0%, 74.1%)
CIE-LAB	lab(23.78, -12.01, -6.53)
CIE-LCH	lch(23.78, 13.68, 208.54°)
OKLab	oklab(33.83% -0.0394 -0.0181)
OKLCH	oklch(33.83% 0.043 204.6)
XYZ	xyz(3.0823, 4.0325, 5.7691)
Luminance	0.0403 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183E42 #421C18

analogous

#184231 #183E42 #182942

triadic

#183E42 #42183E #3E4218

tetradic

#183E42 #311842 #421C18 #294218

square

#183E42 #311842 #421C18 #294218

split-complementary

#183E42 #421829 #423118

monochromatic

#081516 #081516 #183E42 #28686F #39929C

Accessibility & contrast

On white

11.62

#183E42 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#183E42 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183E42

11.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183E42	#FFFFFF	#000000	##FFFFFF
##183E42	1.00	11.62	1.81	11.62
#FFFFFF	11.62	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#393B42

Deuteranopia (green-blind)

#323642

Tritanopia (blue-blind)

#00413F

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #183e42;
/* rgb */ color: rgb(24, 62, 66);
/* oklch */ color: oklch(33.8% 0.043 204.6);

Tailwind

colors: {
  custom: {
    50: '#5a7376',
    500: '#183e42',
    950: '#000000',
  },
}

SCSS

$custom: #183e42;
$custom-light: #5a7376;
$custom-dark: #000000;

JSON

{
  "hex": "#183e42",
  "rgb": {
    "r": 24,
    "g": 62,
    "b": 66
  },
  "hsl": {
    "h": 185.714,
    "s": 46.667,
    "l": 17.647
  },
  "oklch": {
    "l": 0.33832,
    "c": 0.04334,
    "h": 204.6
  },
  "luminance": 0.04033
}

Semantic roles & 50–950 ramp

primary

#183E42

secondary

#79433D

accent

#5E51D6

background

#F5F7F7

surface

#E9EDED

border

#C5C8C8

text

#040808

muted

#797B7B

Preview Lab

Preview with #183E42

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

Preview Lab → · Contrast checker → · Palette generator →