#283A42#283A42

#283A42 is a dark, muted cyan. Relative luminance 0.039; OKLCH L 33.6% C 0.027 H 227.2°. Best body text is #FFFFFF at 11.84:1 contrast (WCAG AA passes).

Color values

HEX	#283A42
RGB	rgb(40, 58, 66)
HSL	hsl(198, 25%, 21%)
HSV	hsv(198, 39%, 26%)
CMYK	cmyk(39.4%, 12.1%, 0%, 74.1%)
CIE-LAB	lab(23.24, -4.85, -7.26)
CIE-LCH	lch(23.24, 8.73, 236.27°)
OKLab	oklab(33.63% -0.0184 -0.0199)
OKLCH	oklch(33.63% 0.027 227.2)
XYZ	xyz(3.3712, 3.8704, 5.7226)
Luminance	0.0387 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283A42 #423028

analogous

#28423D #283A42 #282D42

triadic

#283A42 #42283A #3A4228

tetradic

#283A42 #3D2842 #423028 #2D4228

square

#283A42 #3D2842 #423028 #2D4228

split-complementary

#283A42 #42282D #423D28

monochromatic

#0C1113 #11191C #283A42 #3F5B68 #567D8E

Accessibility & contrast

On white

11.84

#283A42 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#283A42 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283A42

11.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283A42	#FFFFFF	#000000	##FFFFFF
##283A42	1.00	11.84	1.77	11.84
#FFFFFF	11.84	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#363942

Deuteranopia (green-blind)

#323642

Tritanopia (blue-blind)

#1F3C3C

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #283a42;
/* rgb */ color: rgb(40, 58, 66);
/* oklch */ color: oklch(33.6% 0.027 227.2);

Tailwind

colors: {
  custom: {
    50: '#637076',
    500: '#283a42',
    950: '#000000',
  },
}

SCSS

$custom: #283a42;
$custom-light: #637076;
$custom-dark: #000000;

JSON

{
  "hex": "#283a42",
  "rgb": {
    "r": 40,
    "g": 58,
    "b": 66
  },
  "hsl": {
    "h": 198.462,
    "s": 24.528,
    "l": 20.784
  },
  "oklch": {
    "l": 0.33633,
    "c": 0.02714,
    "h": 227.2
  },
  "luminance": 0.03871
}

Semantic roles & 50–950 ramp

primary

#283A42

secondary

#745C52

accent

#8367C1

background

#F5F6F7

surface

#EAECED

border

#C6C7C8

text

#050708

muted

#797A7B

Preview Lab

Preview with #283A42

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

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