#283F3C#283F3C

#283F3C is a dark, muted teal. Relative luminance 0.043; OKLCH L 34.8% C 0.029 H 185.7°. Best body text is #FFFFFF at 11.25:1 contrast (WCAG AA passes).

Color values

HEX	#283F3C
RGB	rgb(40, 63, 60)
HSL	hsl(172, 22%, 20%)
HSV	hsv(172, 37%, 25%)
CMYK	cmyk(36.5%, 0%, 4.8%, 75.3%)
CIE-LAB	lab(24.74, -9.77, -1.03)
CIE-LCH	lch(24.74, 9.82, 186.02°)
OKLab	oklab(34.76% -0.0291 -0.0029)
OKLCH	oklch(34.76% 0.029 185.7)
XYZ	xyz(3.4679, 4.3322, 4.9276)
Luminance	0.0433 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283F3C #3F282B

analogous

#283F30 #283F3C #28363F

triadic

#283F3C #3C283F #3F3C28

tetradic

#283F3C #30283F #3F282B #363F28

square

#283F3C #30283F #3F282B #363F28

split-complementary

#283F3C #3F2836 #3F3028

monochromatic

#0C1312 #101A18 #283F3C #406460 #588A83

Accessibility & contrast

On white

11.25

#283F3C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#283F3C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283F3C

11.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283F3C	#FFFFFF	#000000	##FFFFFF
##283F3C	1.00	11.25	1.87	11.25
#FFFFFF	11.25	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D3D3C

Deuteranopia (green-blind)

#39393C

Tritanopia (blue-blind)

#20403E

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #283f3c;
/* rgb */ color: rgb(40, 63, 60);
/* oklch */ color: oklch(34.8% 0.029 185.7);

Tailwind

colors: {
  custom: {
    50: '#637471',
    500: '#283f3c',
    950: '#000000',
  },
}

SCSS

$custom: #283f3c;
$custom-light: #637471;
$custom-dark: #000000;

JSON

{
  "hex": "#283f3c",
  "rgb": {
    "r": 40,
    "g": 63,
    "b": 60
  },
  "hsl": {
    "h": 172.174,
    "s": 22.33,
    "l": 20.196
  },
  "oklch": {
    "l": 0.34758,
    "c": 0.02929,
    "h": 185.7
  },
  "luminance": 0.04332
}

Semantic roles & 50–950 ramp

primary

#283F3C

secondary

#715256

accent

#6974BF

background

#F5F7F6

surface

#EAEDEC

border

#C6C8C7

text

#050807

muted

#797B7A

Preview Lab

Preview with #283F3C

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

Preview Lab → · Contrast checker → · Palette generator →