#28283F#28283F

#28283F is a dark, muted blue. Relative luminance 0.023; OKLCH L 28.8% C 0.042 H 283.5°. Best body text is #FFFFFF at 14.33:1 contrast (WCAG AA passes).

Color values

HEX	#28283F
RGB	rgb(40, 40, 63)
HSL	hsl(240, 22%, 20%)
HSV	hsv(240, 37%, 25%)
CMYK	cmyk(36.5%, 36.5%, 0%, 75.3%)
CIE-LAB	lab(17.12, 6.55, -14.60)
CIE-LCH	lch(17.12, 16.00, 294.15°)
OKLab	oklab(28.8% 0.0097 -0.0406)
OKLCH	oklch(28.8% 0.042 283.5)
XYZ	xyz(2.5308, 2.3275, 5.0176)
Luminance	0.0233 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28283F #3F3F28

analogous

#28333F #28283F #33283F

triadic

#28283F #3F2828 #283F28

tetradic

#28283F #3F2833 #3F3F28 #283F33

square

#28283F #3F2833 #3F3F28 #283F33

split-complementary

#28283F #3F3328 #333F28

monochromatic

#0C0C13 #10101A #28283F #404064 #58588A

Accessibility & contrast

On white

14.33

#28283F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.47

#28283F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28283F

14.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28283F	#FFFFFF	#000000	##FFFFFF
##28283F	1.00	14.33	1.47	14.33
#FFFFFF	14.33	1.00	21.00	1.00
#000000	1.47	21.00	1.00	21.00
##FFFFFF	14.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#212B40

Deuteranopia (green-blind)

#20293E

Tritanopia (blue-blind)

#222C30

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #28283f;
/* rgb */ color: rgb(40, 40, 63);
/* oklch */ color: oklch(28.8% 0.042 283.5);

Tailwind

colors: {
  custom: {
    50: '#636174',
    500: '#28283f',
    950: '#000000',
  },
}

SCSS

$custom: #28283f;
$custom-light: #636174;
$custom-dark: #000000;

JSON

{
  "hex": "#28283f",
  "rgb": {
    "r": 40,
    "g": 40,
    "b": 63
  },
  "hsl": {
    "h": 240,
    "s": 22.33,
    "l": 20.196
  },
  "oklch": {
    "l": 0.28799,
    "c": 0.04178,
    "h": 283.5
  },
  "luminance": 0.02328
}

Semantic roles & 50–950 ramp

primary

#28283F

secondary

#717152

accent

#BF69BF

background

#F5F5F7

surface

#EAE9ED

border

#C6C5C8

text

#050508

muted

#79797B

Preview Lab

Preview with #28283F

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

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