#283F42#283F42

#283F42 is a dark, muted teal. Relative luminance 0.044; OKLCH L 35.0% C 0.029 H 206.2°. Best body text is #FFFFFF at 11.17:1 contrast (WCAG AA passes).

Color values

HEX	#283F42
RGB	rgb(40, 63, 66)
HSL	hsl(187, 25%, 21%)
HSV	hsv(187, 39%, 26%)
CMYK	cmyk(39.4%, 4.5%, 0%, 74.1%)
CIE-LAB	lab(24.95, -8.04, -4.70)
CIE-LCH	lch(24.95, 9.31, 210.28°)
OKLab	oklab(34.99% -0.0261 -0.0129)
OKLCH	oklch(34.99% 0.029 206.2)
XYZ	xyz(3.6356, 4.3993, 5.8108)
Luminance	0.0440 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283F42 #422B28

analogous

#284238 #283F42 #283242

triadic

#283F42 #42283F #3F4228

tetradic

#283F42 #382842 #422B28 #324228

square

#283F42 #382842 #422B28 #324228

split-complementary

#283F42 #422832 #423828

monochromatic

#0C1213 #111B1C #283F42 #3F6368 #56888E

Accessibility & contrast

On white

11.17

#283F42 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#283F42 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283F42

11.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283F42	#FFFFFF	#000000	##FFFFFF
##283F42	1.00	11.17	1.88	11.17
#FFFFFF	11.17	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B3D42

Deuteranopia (green-blind)

#373A42

Tritanopia (blue-blind)

#1E4140

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #283f42;
/* rgb */ color: rgb(40, 63, 66);
/* oklch */ color: oklch(35.0% 0.029 206.2);

Tailwind

colors: {
  custom: {
    50: '#637476',
    500: '#283f42',
    950: '#000000',
  },
}

SCSS

$custom: #283f42;
$custom-light: #637476;
$custom-dark: #000000;

JSON

{
  "hex": "#283f42",
  "rgb": {
    "r": 40,
    "g": 63,
    "b": 66
  },
  "hsl": {
    "h": 186.923,
    "s": 24.528,
    "l": 20.784
  },
  "oklch": {
    "l": 0.34994,
    "c": 0.02912,
    "h": 206.2
  },
  "luminance": 0.04399
}

Semantic roles & 50–950 ramp

primary

#283F42

secondary

#745652

accent

#7167C1

background

#F5F7F7

surface

#EAEDED

border

#C6C8C8

text

#050808

muted

#797B7B

Preview Lab

Preview with #283F42

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

Preview Lab → · Contrast checker → · Palette generator →