#183E43#183E43

#183E43 is a dark, muted teal. Relative luminance 0.040; OKLCH L 33.9% C 0.044 H 206.9°. Best body text is #FFFFFF at 11.61:1 contrast (WCAG AA passes).

Color values

HEX	#183E43
RGB	rgb(24, 62, 67)
HSL	hsl(187, 47%, 18%)
HSV	hsv(187, 64%, 26%)
CMYK	cmyk(64.2%, 7.5%, 0%, 73.7%)
CIE-LAB	lab(23.82, -11.67, -7.14)
CIE-LCH	lch(23.82, 13.68, 211.46°)
OKLab	oklab(33.88% -0.0389 -0.0197)
OKLCH	oklch(33.88% 0.044 206.9)
XYZ	xyz(3.1120, 4.0444, 5.9257)
Luminance	0.0404 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183E43 #431D18

analogous

#184332 #183E43 #182843

triadic

#183E43 #43183E #3E4318

tetradic

#183E43 #321843 #431D18 #284318

square

#183E43 #321843 #431D18 #284318

split-complementary

#183E43 #431828 #433218

monochromatic

#081517 #081517 #183E43 #286870 #38919D

Accessibility & contrast

On white

11.61

#183E43 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#183E43 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183E43

11.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183E43	#FFFFFF	#000000	##FFFFFF
##183E43	1.00	11.61	1.81	11.61
#FFFFFF	11.61	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#393C43

Deuteranopia (green-blind)

#323743

Tritanopia (blue-blind)

#00413F

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #183e43;
/* rgb */ color: rgb(24, 62, 67);
/* oklch */ color: oklch(33.9% 0.044 206.9);

Tailwind

colors: {
  custom: {
    50: '#5a7377',
    500: '#183e43',
    950: '#000000',
  },
}

SCSS

$custom: #183e43;
$custom-light: #5a7377;
$custom-dark: #000000;

JSON

{
  "hex": "#183e43",
  "rgb": {
    "r": 24,
    "g": 62,
    "b": 67
  },
  "hsl": {
    "h": 186.977,
    "s": 47.253,
    "l": 17.843
  },
  "oklch": {
    "l": 0.33876,
    "c": 0.04362,
    "h": 206.9
  },
  "luminance": 0.04045
}

Semantic roles & 50–950 ramp

primary

#183E43

secondary

#7A443D

accent

#6151D7

background

#F5F7F7

surface

#E9EDED

border

#C5C8C8

text

#040808

muted

#797B7B

Preview Lab

Preview with #183E43

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

Preview Lab → · Contrast checker → · Palette generator →