#283F43#283F43

#283F43 is a dark, muted teal. Relative luminance 0.044; OKLCH L 35.0% C 0.029 H 209.5°. Best body text is #FFFFFF at 11.16:1 contrast (WCAG AA passes).

Color values

HEX	#283F43
RGB	rgb(40, 63, 67)
HSL	hsl(189, 25%, 21%)
HSV	hsv(189, 40%, 26%)
CMYK	cmyk(40.3%, 6%, 0%, 73.7%)
CIE-LAB	lab(24.99, -7.74, -5.30)
CIE-LCH	lch(24.99, 9.38, 214.41°)
OKLab	oklab(35.04% -0.0256 -0.0145)
OKLCH	oklch(35.04% 0.029 209.5)
XYZ	xyz(3.6653, 4.4112, 5.9674)
Luminance	0.0441 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283F43 #432C28

analogous

#284339 #283F43 #283143

triadic

#283F43 #43283F #3F4328

tetradic

#283F43 #392843 #432C28 #314328

square

#283F43 #392843 #432C28 #314328

split-complementary

#283F43 #432831 #433928

monochromatic

#0B1213 #111B1D #283F43 #3F6369 #568790

Accessibility & contrast

On white

11.16

#283F43 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#283F43 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283F43

11.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283F43	#FFFFFF	#000000	##FFFFFF
##283F43	1.00	11.16	1.88	11.16
#FFFFFF	11.16	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B3D43

Deuteranopia (green-blind)

#373A43

Tritanopia (blue-blind)

#1E4140

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #283f43;
/* rgb */ color: rgb(40, 63, 67);
/* oklch */ color: oklch(35.0% 0.029 209.5);

Tailwind

colors: {
  custom: {
    50: '#637477',
    500: '#283f43',
    950: '#000000',
  },
}

SCSS

$custom: #283f43;
$custom-light: #637477;
$custom-dark: #000000;

JSON

{
  "hex": "#283f43",
  "rgb": {
    "r": 40,
    "g": 63,
    "b": 67
  },
  "hsl": {
    "h": 188.889,
    "s": 25.234,
    "l": 20.98
  },
  "oklch": {
    "l": 0.35036,
    "c": 0.02947,
    "h": 209.5
  },
  "luminance": 0.04411
}

Semantic roles & 50–950 ramp

primary

#283F43

secondary

#755752

accent

#7466C2

background

#F5F7F7

surface

#EAEDED

border

#C6C8C8

text

#050808

muted

#797B7B

Preview Lab

Preview with #283F43

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

Preview Lab → · Contrast checker → · Palette generator →