#283F45#283F45

#283F45 is a dark, muted cyan. Relative luminance 0.044; OKLCH L 35.1% C 0.030 H 215.9°. Best body text is #FFFFFF at 11.13:1 contrast (WCAG AA passes).

Color values

HEX	#283F45
RGB	rgb(40, 63, 69)
HSL	hsl(192, 27%, 21%)
HSV	hsv(192, 42%, 27%)
CMYK	cmyk(42%, 8.7%, 0%, 72.9%)
CIE-LAB	lab(25.06, -7.13, -6.51)
CIE-LCH	lch(25.06, 9.66, 222.40°)
OKLab	oklab(35.12% -0.0247 -0.0179)
OKLCH	oklch(35.12% 0.03 215.9)
XYZ	xyz(3.7264, 4.4356, 6.2889)
Luminance	0.0444 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283F45 #452E28

analogous

#28453D #283F45 #283145

triadic

#283F45 #45283F #3F4528

tetradic

#283F45 #3D2845 #452E28 #314528

square

#283F45 #3D2845 #452E28 #314528

split-complementary

#283F45 #452831 #453D28

monochromatic

#0B1213 #121C1E #283F45 #3E626C #558692

Accessibility & contrast

On white

11.13

#283F45 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#283F45 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283F45

11.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283F45	#FFFFFF	#000000	##FFFFFF
##283F45	1.00	11.13	1.89	11.13
#FFFFFF	11.13	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B3E45

Deuteranopia (green-blind)

#363A45

Tritanopia (blue-blind)

#1D4141

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #283f45;
/* rgb */ color: rgb(40, 63, 69);
/* oklch */ color: oklch(35.1% 0.030 215.9);

Tailwind

colors: {
  custom: {
    50: '#637478',
    500: '#283f45',
    950: '#000000',
  },
}

SCSS

$custom: #283f45;
$custom-light: #637478;
$custom-dark: #000000;

JSON

{
  "hex": "#283f45",
  "rgb": {
    "r": 40,
    "g": 63,
    "b": 69
  },
  "hsl": {
    "h": 192.414,
    "s": 26.606,
    "l": 21.373
  },
  "oklch": {
    "l": 0.35121,
    "c": 0.03048,
    "h": 215.9
  },
  "luminance": 0.04436
}

Semantic roles & 50–950 ramp

primary

#283F45

secondary

#775952

accent

#7865C3

background

#F6F7F7

surface

#EBEDED

border

#C6C8C8

text

#050809

muted

#7A7B7B

Preview Lab

Preview with #283F45

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

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