#283F3B#283F3B

#283F3B is a dark, muted teal. Relative luminance 0.043; OKLCH L 34.7% C 0.030 H 182.5°. Best body text is #FFFFFF at 11.26:1 contrast (WCAG AA passes).

Color values

HEX	#283F3B
RGB	rgb(40, 63, 59)
HSL	hsl(170, 22%, 20%)
HSV	hsv(170, 37%, 25%)
CMYK	cmyk(36.5%, 0%, 6.3%, 75.3%)
CIE-LAB	lab(24.71, -10.05, -0.42)
CIE-LCH	lch(24.71, 10.06, 182.37°)
OKLab	oklab(34.72% -0.0296 -0.0013)
OKLCH	oklch(34.72% 0.03 182.5)
XYZ	xyz(3.4417, 4.3217, 4.7896)
Luminance	0.0432 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283F3B #3F282C

analogous

#283F2F #283F3B #28373F

triadic

#283F3B #3B283F #3F3B28

tetradic

#283F3B #2F283F #3F282C #373F28

square

#283F3B #2F283F #3F282C #373F28

split-complementary

#283F3B #3F2837 #3F2F28

monochromatic

#0C1312 #101A18 #283F3B #40645E #588A81

Accessibility & contrast

On white

11.26

#283F3B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#283F3B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283F3B

11.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283F3B	#FFFFFF	#000000	##FFFFFF
##283F3B	1.00	11.26	1.86	11.26
#FFFFFF	11.26	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D3C3B

Deuteranopia (green-blind)

#39393B

Tritanopia (blue-blind)

#21403E

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #283f3b;
/* rgb */ color: rgb(40, 63, 59);
/* oklch */ color: oklch(34.7% 0.030 182.5);

Tailwind

colors: {
  custom: {
    50: '#637470',
    500: '#283f3b',
    950: '#000000',
  },
}

SCSS

$custom: #283f3b;
$custom-light: #637470;
$custom-dark: #000000;

JSON

{
  "hex": "#283f3b",
  "rgb": {
    "r": 40,
    "g": 63,
    "b": 59
  },
  "hsl": {
    "h": 169.565,
    "s": 22.33,
    "l": 20.196
  },
  "oklch": {
    "l": 0.34721,
    "c": 0.02968,
    "h": 182.5
  },
  "luminance": 0.04322
}

Semantic roles & 50–950 ramp

primary

#283F3B

secondary

#715257

accent

#6978BF

background

#F5F7F6

surface

#EAEDEC

border

#C6C8C7

text

#050807

muted

#797B7A

Preview Lab

Preview with #283F3B

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

Preview Lab → · Contrast checker → · Palette generator →