#183B31#183B31

#183B31 is a dark, muted teal. Relative luminance 0.035; OKLCH L 32.3% C 0.045 H 172.3°. Best body text is #FFFFFF at 12.29:1 contrast (WCAG AA passes).

Color values

HEX	#183B31
RGB	rgb(24, 59, 49)
HSL	hsl(163, 42%, 16%)
HSV	hsv(163, 59%, 23%)
CMYK	cmyk(59.3%, 0%, 16.9%, 76.9%)
CIE-LAB	lab(22.10, -15.64, 2.36)
CIE-LCH	lch(22.10, 15.81, 171.42°)
OKLab	oklab(32.28% -0.0444 0.006)
OKLCH	oklch(32.28% 0.045 172.3)
XYZ	xyz(2.4948, 3.5437, 3.4577)
Luminance	0.0354 (WCAG relative)
Temperature	neutral
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183B31 #3B1822

analogous

#183B20 #183B31 #18343B

triadic

#183B31 #31183B #3B3118

tetradic

#183B31 #20183B #3B1822 #343B18

square

#183B31 #20183B #3B1822 #343B18

split-complementary

#183B31 #3B1834 #3B2018

monochromatic

#091612 #091612 #183B31 #2A6755 #3B9279

Accessibility & contrast

On white

12.29

#183B31 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#183B31 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183B31

12.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183B31	#FFFFFF	#000000	##FFFFFF
##183B31	1.00	12.29	1.71	12.29
#FFFFFF	12.29	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#393731

Deuteranopia (green-blind)

#343332

Tritanopia (blue-blind)

#093C38

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #183b31;
/* rgb */ color: rgb(24, 59, 49);
/* oklch */ color: oklch(32.3% 0.045 172.3);

Tailwind

colors: {
  custom: {
    50: '#587169',
    500: '#183b31',
    950: '#000000',
  },
}

SCSS

$custom: #183b31;
$custom-light: #587169;
$custom-dark: #000000;

JSON

{
  "hex": "#183b31",
  "rgb": {
    "r": 24,
    "g": 59,
    "b": 49
  },
  "hsl": {
    "h": 162.857,
    "s": 42.169,
    "l": 16.275
  },
  "oklch": {
    "l": 0.32282,
    "c": 0.04477,
    "h": 172.3
  },
  "luminance": 0.03544
}

Semantic roles & 50–950 ramp

primary

#183B31

secondary

#713E4C

accent

#5679D2

background

#F5F6F6

surface

#E9ECEB

border

#C5C7C6

text

#030706

muted

#787A7A

Preview Lab

Preview with #183B31

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

Preview Lab → · Contrast checker → · Palette generator →