#283F3F#283F3F

#283F3F is a dark, muted teal. Relative luminance 0.044; OKLCH L 34.9% C 0.029 H 195.9°. Best body text is #FFFFFF at 11.21:1 contrast (WCAG AA passes).

Color values

HEX	#283F3F
RGB	rgb(40, 63, 63)
HSL	hsl(180, 22%, 20%)
HSV	hsv(180, 37%, 25%)
CMYK	cmyk(36.5%, 0%, 0%, 75.3%)
CIE-LAB	lab(24.84, -8.92, -2.87)
CIE-LCH	lch(24.84, 9.37, 197.82°)
OKLab	oklab(34.87% -0.0276 -0.0079)
OKLCH	oklch(34.87% 0.029 195.9)
XYZ	xyz(3.5495, 4.3648, 5.3571)
Luminance	0.0437 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283F3F #3F2828

analogous

#283F33 #283F3F #28333F

triadic

#283F3F #3F283F #3F3F28

tetradic

#283F3F #33283F #3F2828 #333F28

square

#283F3F #33283F #3F2828 #333F28

split-complementary

#283F3F #3F2833 #3F3328

monochromatic

#0C1313 #101A1A #283F3F #406464 #588A8A

Accessibility & contrast

On white

11.21

#283F3F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#283F3F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283F3F

11.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283F3F	#FFFFFF	#000000	##FFFFFF
##283F3F	1.00	11.21	1.87	11.21
#FFFFFF	11.21	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C3D3F

Deuteranopia (green-blind)

#383A3F

Tritanopia (blue-blind)

#1F403F

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #283f3f;
/* rgb */ color: rgb(40, 63, 63);
/* oklch */ color: oklch(34.9% 0.029 195.9);

Tailwind

colors: {
  custom: {
    50: '#637474',
    500: '#283f3f',
    950: '#000000',
  },
}

SCSS

$custom: #283f3f;
$custom-light: #637474;
$custom-dark: #000000;

JSON

{
  "hex": "#283f3f",
  "rgb": {
    "r": 40,
    "g": 63,
    "b": 63
  },
  "hsl": {
    "h": 180,
    "s": 22.33,
    "l": 20.196
  },
  "oklch": {
    "l": 0.34873,
    "c": 0.02871,
    "h": 195.9
  },
  "luminance": 0.04365
}

Semantic roles & 50–950 ramp

primary

#283F3F

secondary

#715252

accent

#6969BF

background

#F5F7F7

surface

#EAEDED

border

#C6C8C8

text

#050808

muted

#797B7B

Preview Lab

Preview with #283F3F

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

Preview Lab → · Contrast checker → · Palette generator →