#283C42#283C42

#283C42 is a dark, muted cyan. Relative luminance 0.041; OKLCH L 34.2% C 0.027 H 218.4°. Best body text is #FFFFFF at 11.57:1 contrast (WCAG AA passes).

Color values

HEX	#283C42
RGB	rgb(40, 60, 66)
HSL	hsl(194, 25%, 21%)
HSV	hsv(194, 39%, 26%)
CMYK	cmyk(39.4%, 9.1%, 0%, 74.1%)
CIE-LAB	lab(23.92, -6.14, -6.24)
CIE-LCH	lch(23.92, 8.75, 225.44°)
OKLab	oklab(34.17% -0.0215 -0.0171)
OKLCH	oklch(34.17% 0.027 218.4)
XYZ	xyz(3.4740, 4.0760, 5.7569)
Luminance	0.0408 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283C42 #422E28

analogous

#28423B #283C42 #282F42

triadic

#283C42 #42283C #3C4228

tetradic

#283C42 #3B2842 #422E28 #2F4228

square

#283C42 #3B2842 #422E28 #2F4228

split-complementary

#283C42 #42282F #423B28

monochromatic

#0C1113 #11191C #283C42 #3F5F68 #56818E

Accessibility & contrast

On white

11.57

#283C42 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#283C42 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283C42

11.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283C42	#FFFFFF	#000000	##FFFFFF
##283C42	1.00	11.57	1.82	11.57
#FFFFFF	11.57	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#383B42

Deuteranopia (green-blind)

#343842

Tritanopia (blue-blind)

#1F3E3E

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #283c42;
/* rgb */ color: rgb(40, 60, 66);
/* oklch */ color: oklch(34.2% 0.027 218.4);

Tailwind

colors: {
  custom: {
    50: '#637176',
    500: '#283c42',
    950: '#000000',
  },
}

SCSS

$custom: #283c42;
$custom-light: #637176;
$custom-dark: #000000;

JSON

{
  "hex": "#283c42",
  "rgb": {
    "r": 40,
    "g": 60,
    "b": 66
  },
  "hsl": {
    "h": 193.846,
    "s": 24.528,
    "l": 20.784
  },
  "oklch": {
    "l": 0.34175,
    "c": 0.02748,
    "h": 218.4
  },
  "luminance": 0.04076
}

Semantic roles & 50–950 ramp

primary

#283C42

secondary

#745A52

accent

#7C67C1

background

#F5F6F7

surface

#EAECED

border

#C6C7C8

text

#050708

muted

#797A7B

Preview Lab

Preview with #283C42

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

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