#283D40#283D40

#283D40 is a dark, muted teal. Relative luminance 0.042; OKLCH L 34.4% C 0.027 H 207.1°. Best body text is #FFFFFF at 11.46:1 contrast (WCAG AA passes).

Color values

HEX	#283D40
RGB	rgb(40, 61, 64)
HSL	hsl(188, 23%, 20%)
HSV	hsv(188, 38%, 25%)
CMYK	cmyk(37.5%, 4.7%, 0%, 74.9%)
CIE-LAB	lab(24.19, -7.38, -4.50)
CIE-LCH	lch(24.19, 8.64, 211.40°)
OKLab	oklab(34.36% -0.024 -0.0123)
OKLCH	oklch(34.36% 0.027 207.1)
XYZ	xyz(3.4689, 4.1586, 5.4694)
Luminance	0.0416 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283D40 #402B28

analogous

#284037 #283D40 #283140

triadic

#283D40 #40283D #3D4028

tetradic

#283D40 #372840 #402B28 #314028

square

#283D40 #372840 #402B28 #314028

split-complementary

#283D40 #402831 #403728

monochromatic

#0C1213 #10191A #283D40 #406166 #57858B

Accessibility & contrast

On white

11.46

#283D40 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#283D40 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283D40

11.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283D40	#FFFFFF	#000000	##FFFFFF
##283D40	1.00	11.46	1.83	11.46
#FFFFFF	11.46	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A3B40

Deuteranopia (green-blind)

#363840

Tritanopia (blue-blind)

#1F3F3E

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #283d40;
/* rgb */ color: rgb(40, 61, 64);
/* oklch */ color: oklch(34.4% 0.027 207.1);

Tailwind

colors: {
  custom: {
    50: '#637274',
    500: '#283d40',
    950: '#000000',
  },
}

SCSS

$custom: #283d40;
$custom-light: #637274;
$custom-dark: #000000;

JSON

{
  "hex": "#283d40",
  "rgb": {
    "r": 40,
    "g": 61,
    "b": 64
  },
  "hsl": {
    "h": 187.5,
    "s": 23.077,
    "l": 20.392
  },
  "oklch": {
    "l": 0.34364,
    "c": 0.02701,
    "h": 207.1
  },
  "luminance": 0.04159
}

Semantic roles & 50–950 ramp

primary

#283D40

secondary

#725652

accent

#7368C0

background

#F5F6F7

surface

#EAECED

border

#C6C7C8

text

#050808

muted

#797B7B

Preview Lab

Preview with #283D40

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

Preview Lab → · Contrast checker → · Palette generator →