#183D40#183D40

#183D40 is a dark, muted teal. Relative luminance 0.039; OKLCH L 33.5% C 0.042 H 202.5°. Best body text is #FFFFFF at 11.80:1 contrast (WCAG AA passes).

Color values

HEX	#183D40
RGB	rgb(24, 61, 64)
HSL	hsl(185, 45%, 17%)
HSV	hsv(185, 63%, 25%)
CMYK	cmyk(62.5%, 4.7%, 0%, 74.9%)
CIE-LAB	lab(23.34, -12.09, -5.86)
CIE-LCH	lch(23.34, 13.43, 205.84°)
OKLab	oklab(33.46% -0.0391 -0.0162)
OKLCH	oklch(33.46% 0.042 202.5)
XYZ	xyz(2.9705, 3.9016, 5.4460)
Luminance	0.0390 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183D40 #401B18

analogous

#18402F #183D40 #182940

triadic

#183D40 #40183D #3D4018

tetradic

#183D40 #2F1840 #401B18 #294018

square

#183D40 #2F1840 #401B18 #294018

split-complementary

#183D40 #401829 #402F18

monochromatic

#081516 #081516 #183D40 #29676D #399299

Accessibility & contrast

On white

11.80

#183D40 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#183D40 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183D40

11.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183D40	#FFFFFF	#000000	##FFFFFF
##183D40	1.00	11.80	1.78	11.80
#FFFFFF	11.80	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#383A40

Deuteranopia (green-blind)

#323640

Tritanopia (blue-blind)

#003F3E

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #183d40;
/* rgb */ color: rgb(24, 61, 64);
/* oklch */ color: oklch(33.5% 0.042 202.5);

Tailwind

colors: {
  custom: {
    50: '#5a7274',
    500: '#183d40',
    950: '#000000',
  },
}

SCSS

$custom: #183d40;
$custom-light: #5a7274;
$custom-dark: #000000;

JSON

{
  "hex": "#183d40",
  "rgb": {
    "r": 24,
    "g": 61,
    "b": 64
  },
  "hsl": {
    "h": 184.5,
    "s": 45.455,
    "l": 17.255
  },
  "oklch": {
    "l": 0.33456,
    "c": 0.04228,
    "h": 202.5
  },
  "luminance": 0.03902
}

Semantic roles & 50–950 ramp

primary

#183D40

secondary

#77423D

accent

#5C53D5

background

#F5F6F7

surface

#E9ECED

border

#C5C7C8

text

#040808

muted

#797B7B

Preview Lab

Preview with #183D40

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

Preview Lab → · Contrast checker → · Palette generator →