#283E40#283E40

#283E40 is a dark, muted teal. Relative luminance 0.043; OKLCH L 34.6% C 0.028 H 203.1°. Best body text is #FFFFFF at 11.33:1 contrast (WCAG AA passes).

Color values

HEX	#283E40
RGB	rgb(40, 62, 64)
HSL	hsl(185, 23%, 20%)
HSV	hsv(185, 38%, 25%)
CMYK	cmyk(37.5%, 3.1%, 0%, 74.9%)
CIE-LAB	lab(24.53, -8.00, -3.99)
CIE-LCH	lch(24.53, 8.94, 206.50°)
OKLab	oklab(34.64% -0.0256 -0.0109)
OKLCH	oklch(34.64% 0.028 203.1)
XYZ	xyz(3.5228, 4.2663, 5.4874)
Luminance	0.0427 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283E40 #402A28

analogous

#284036 #283E40 #283240

triadic

#283E40 #40283E #3E4028

tetradic

#283E40 #362840 #402A28 #324028

square

#283E40 #362840 #402A28 #324028

split-complementary

#283E40 #402832 #403628

monochromatic

#0C1213 #101A1A #283E40 #406266 #57878B

Accessibility & contrast

On white

11.33

#283E40 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#283E40 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283E40

11.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283E40	#FFFFFF	#000000	##FFFFFF
##283E40	1.00	11.33	1.85	11.33
#FFFFFF	11.33	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B3C40

Deuteranopia (green-blind)

#373940

Tritanopia (blue-blind)

#1F403F

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #283e40;
/* rgb */ color: rgb(40, 62, 64);
/* oklch */ color: oklch(34.6% 0.028 203.1);

Tailwind

colors: {
  custom: {
    50: '#637374',
    500: '#283e40',
    950: '#000000',
  },
}

SCSS

$custom: #283e40;
$custom-light: #637374;
$custom-dark: #000000;

JSON

{
  "hex": "#283e40",
  "rgb": {
    "r": 40,
    "g": 62,
    "b": 64
  },
  "hsl": {
    "h": 185,
    "s": 23.077,
    "l": 20.392
  },
  "oklch": {
    "l": 0.34638,
    "c": 0.02781,
    "h": 203.1
  },
  "luminance": 0.04267
}

Semantic roles & 50–950 ramp

primary

#283E40

secondary

#725552

accent

#7068C0

background

#F5F6F7

surface

#EAECED

border

#C6C7C8

text

#050808

muted

#797B7B

Preview Lab

Preview with #283E40

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

Preview Lab → · Contrast checker → · Palette generator →