#183B33#183B33

#183B33 is a dark, muted teal. Relative luminance 0.036; OKLCH L 32.4% C 0.043 H 176.4°. Best body text is #FFFFFF at 12.26:1 contrast (WCAG AA passes).

Color values

HEX	#183B33
RGB	rgb(24, 59, 51)
HSL	hsl(166, 42%, 16%)
HSV	hsv(166, 59%, 23%)
CMYK	cmyk(59.3%, 0%, 13.6%, 76.9%)
CIE-LAB	lab(22.16, -15.05, 1.11)
CIE-LCH	lch(22.16, 15.09, 175.80°)
OKLab	oklab(32.35% -0.0432 0.0027)
OKLCH	oklch(32.35% 0.043 176.4)
XYZ	xyz(2.5379, 3.5609, 3.6849)
Luminance	0.0356 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183B33 #3B1820

analogous

#183B22 #183B33 #18323B

triadic

#183B33 #33183B #3B3318

tetradic

#183B33 #22183B #3B1820 #323B18

square

#183B33 #22183B #3B1820 #323B18

split-complementary

#183B33 #3B1832 #3B2218

monochromatic

#091613 #091613 #183B33 #2A6759 #3B927E

Accessibility & contrast

On white

12.26

#183B33 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#183B33 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183B33

12.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183B33	#FFFFFF	#000000	##FFFFFF
##183B33	1.00	12.26	1.71	12.26
#FFFFFF	12.26	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#393733

Deuteranopia (green-blind)

#333334

Tritanopia (blue-blind)

#073C39

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #183b33;
/* rgb */ color: rgb(24, 59, 51);
/* oklch */ color: oklch(32.4% 0.043 176.4);

Tailwind

colors: {
  custom: {
    50: '#58716a',
    500: '#183b33',
    950: '#000000',
  },
}

SCSS

$custom: #183b33;
$custom-light: #58716a;
$custom-dark: #000000;

JSON

{
  "hex": "#183b33",
  "rgb": {
    "r": 24,
    "g": 59,
    "b": 51
  },
  "hsl": {
    "h": 166.286,
    "s": 42.169,
    "l": 16.275
  },
  "oklch": {
    "l": 0.32353,
    "c": 0.04333,
    "h": 176.4
  },
  "luminance": 0.03561
}

Semantic roles & 50–950 ramp

primary

#183B33

secondary

#713E49

accent

#5672D2

background

#F5F6F6

surface

#E9ECEB

border

#C5C7C6

text

#030706

muted

#787A7A

Preview Lab

Preview with #183B33

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

Preview Lab → · Contrast checker → · Palette generator →