#183333#183333

#183333 is a dark, muted teal. Relative luminance 0.028; OKLCH L 30.0% C 0.033 H 195.5°. Best body text is #FFFFFF at 13.46:1 contrast (WCAG AA passes).

Color values

HEX	#183333
RGB	rgb(24, 51, 51)
HSL	hsl(180, 36%, 15%)
HSV	hsv(180, 53%, 20%)
CMYK	cmyk(52.9%, 0%, 0%, 80%)
CIE-LAB	lab(19.23, -10.26, -3.21)
CIE-LCH	lch(19.23, 10.75, 197.34°)
OKLab	oklab(29.98% -0.0318 -0.0088)
OKLCH	oklch(29.98% 0.033 195.5)
XYZ	xyz(2.1578, 2.8007, 3.5582)
Luminance	0.0280 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183333 #331818

analogous

#183326 #183333 #182633

triadic

#183333 #331833 #333318

tetradic

#183333 #261833 #331818 #263318

square

#183333 #261833 #331818 #263318

split-complementary

#183333 #331826 #332618

monochromatic

#0A1515 #0A1515 #183333 #2C5D5D #3F8686

Accessibility & contrast

On white

13.46

#183333 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#183333 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183333

13.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183333	#FFFFFF	#000000	##FFFFFF
##183333	1.00	13.46	1.56	13.46
#FFFFFF	13.46	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#303133

Deuteranopia (green-blind)

#2B2D33

Tritanopia (blue-blind)

#0A3533

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #183333;
/* rgb */ color: rgb(24, 51, 51);
/* oklch */ color: oklch(30.0% 0.033 195.5);

Tailwind

colors: {
  custom: {
    50: '#576a6a',
    500: '#183333',
    950: '#000000',
  },
}

SCSS

$custom: #183333;
$custom-light: #576a6a;
$custom-dark: #000000;

JSON

{
  "hex": "#183333",
  "rgb": {
    "r": 24,
    "g": 51,
    "b": 51
  },
  "hsl": {
    "h": 180,
    "s": 36,
    "l": 14.706
  },
  "oklch": {
    "l": 0.29983,
    "c": 0.03303,
    "h": 195.5
  },
  "luminance": 0.02801
}

Semantic roles & 50–950 ramp

primary

#183333

secondary

#683E3E

accent

#5C5CCC

background

#F5F6F6

surface

#E9EBEB

border

#C5C6C6

text

#030606

muted

#787A7A

Preview Lab

Preview with #183333

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

Preview Lab → · Contrast checker → · Palette generator →