#283F37#283F37

#283F37 is a dark, muted teal. Relative luminance 0.043; OKLCH L 34.6% C 0.032 H 170.6°. Best body text is #FFFFFF at 11.31:1 contrast (WCAG AA passes).

Color values

HEX	#283F37
RGB	rgb(40, 63, 55)
HSL	hsl(159, 22%, 20%)
HSV	hsv(159, 37%, 25%)
CMYK	cmyk(36.5%, 0%, 12.7%, 75.3%)
CIE-LAB	lab(24.58, -11.12, 2.05)
CIE-LCH	lch(24.58, 11.31, 169.55°)
OKLab	oklab(34.58% -0.0317 0.0053)
OKLCH	oklch(34.58% 0.032 170.6)
XYZ	xyz(3.3419, 4.2818, 4.2641)
Luminance	0.0428 (WCAG relative)
Temperature	neutral
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283F37 #3F2830

analogous

#283F2B #283F37 #283B3F

triadic

#283F37 #37283F #3F3728

tetradic

#283F37 #2B283F #3F2830 #3B3F28

square

#283F37 #2B283F #3F2830 #3B3F28

split-complementary

#283F37 #3F283B #3F2B28

monochromatic

#0C1310 #101A16 #283F37 #406458 #588A78

Accessibility & contrast

On white

11.31

#283F37 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#283F37 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283F37

11.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283F37	#FFFFFF	#000000	##FFFFFF
##283F37	1.00	11.31	1.86	11.31
#FFFFFF	11.31	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E3C37

Deuteranopia (green-blind)

#3A3938

Tritanopia (blue-blind)

#223F3D

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #283f37;
/* rgb */ color: rgb(40, 63, 55);
/* oklch */ color: oklch(34.6% 0.032 170.6);

Tailwind

colors: {
  custom: {
    50: '#63746d',
    500: '#283f37',
    950: '#000000',
  },
}

SCSS

$custom: #283f37;
$custom-light: #63746d;
$custom-dark: #000000;

JSON

{
  "hex": "#283f37",
  "rgb": {
    "r": 40,
    "g": 63,
    "b": 55
  },
  "hsl": {
    "h": 159.13,
    "s": 22.33,
    "l": 20.196
  },
  "oklch": {
    "l": 0.34578,
    "c": 0.03217,
    "h": 170.6
  },
  "luminance": 0.04282
}

Semantic roles & 50–950 ramp

primary

#283F37

secondary

#71525D

accent

#6987BF

background

#F5F7F6

surface

#EAEDEB

border

#C6C8C6

text

#050807

muted

#797B7A

Preview Lab

Preview with #283F37

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

Preview Lab → · Contrast checker → · Palette generator →