#283F3A#283F3A

#283F3A is a dark, muted teal. Relative luminance 0.043; OKLCH L 34.7% C 0.030 H 179.3°. Best body text is #FFFFFF at 11.28:1 contrast (WCAG AA passes).

Color values

HEX	#283F3A
RGB	rgb(40, 63, 58)
HSL	hsl(167, 22%, 20%)
HSV	hsv(167, 37%, 25%)
CMYK	cmyk(36.5%, 0%, 7.9%, 75.3%)
CIE-LAB	lab(24.68, -10.32, 0.20)
CIE-LCH	lch(24.68, 10.32, 178.89°)
OKLab	oklab(34.68% -0.0302 0.0004)
OKLCH	oklch(34.68% 0.03 179.3)
XYZ	xyz(3.4160, 4.3114, 4.6544)
Luminance	0.0431 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283F3A #3F282D

analogous

#283F2F #283F3A #28383F

triadic

#283F3A #3A283F #3F3A28

tetradic

#283F3A #2F283F #3F282D #383F28

square

#283F3A #2F283F #3F282D #383F28

split-complementary

#283F3A #3F2838 #3F2F28

monochromatic

#0C1311 #101A18 #283F3A #40645C #588A7F

Accessibility & contrast

On white

11.28

#283F3A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#283F3A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283F3A

11.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283F3A	#FFFFFF	#000000	##FFFFFF
##283F3A	1.00	11.28	1.86	11.28
#FFFFFF	11.28	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D3C3A

Deuteranopia (green-blind)

#39393A

Tritanopia (blue-blind)

#21403D

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #283f3a;
/* rgb */ color: rgb(40, 63, 58);
/* oklch */ color: oklch(34.7% 0.030 179.3);

Tailwind

colors: {
  custom: {
    50: '#637470',
    500: '#283f3a',
    950: '#000000',
  },
}

SCSS

$custom: #283f3a;
$custom-light: #637470;
$custom-dark: #000000;

JSON

{
  "hex": "#283f3a",
  "rgb": {
    "r": 40,
    "g": 63,
    "b": 58
  },
  "hsl": {
    "h": 166.957,
    "s": 22.33,
    "l": 20.196
  },
  "oklch": {
    "l": 0.34684,
    "c": 0.03017,
    "h": 179.3
  },
  "luminance": 0.04312
}

Semantic roles & 50–950 ramp

primary

#283F3A

secondary

#715259

accent

#697CBF

background

#F5F7F6

surface

#EAEDEC

border

#C6C8C7

text

#050807

muted

#797B7A

Preview Lab

Preview with #283F3A

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

Preview Lab → · Contrast checker → · Palette generator →