#283040#283040

#283040 is a dark, muted blue. Relative luminance 0.029; OKLCH L 30.9% C 0.031 H 264.0°. Best body text is #FFFFFF at 13.23:1 contrast (WCAG AA passes).

Color values

HEX	#283040
RGB	rgb(40, 48, 64)
HSL	hsl(220, 23%, 20%)
HSV	hsv(220, 38%, 25%)
CMYK	cmyk(37.5%, 25%, 0%, 74.9%)
CIE-LAB	lab(19.78, 1.23, -11.17)
CIE-LCH	lch(19.78, 11.24, 276.30°)
OKLab	oklab(30.88% -0.0033 -0.0309)
OKLCH	oklch(30.88% 0.031 264)
XYZ	xyz(2.8572, 2.9351, 5.2655)
Luminance	0.0294 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283040 #403828

analogous

#283C40 #283040 #2C2840

triadic

#283040 #402830 #304028

tetradic

#283040 #40283C #403828 #28402C

square

#283040 #40283C #403828 #28402C

split-complementary

#283040 #402C28 #3C4028

monochromatic

#0C0E13 #10141A #283040 #404C66 #57688B

Accessibility & contrast

On white

13.23

#283040 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#283040 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283040

13.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283040	#FFFFFF	#000000	##FFFFFF
##283040	1.00	13.23	1.59	13.23
#FFFFFF	13.23	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B3141

Deuteranopia (green-blind)

#282F40

Tritanopia (blue-blind)

#213335

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #283040;
/* rgb */ color: rgb(40, 48, 64);
/* oklch */ color: oklch(30.9% 0.031 264.0);

Tailwind

colors: {
  custom: {
    50: '#626874',
    500: '#283040',
    950: '#000000',
  },
}

SCSS

$custom: #283040;
$custom-light: #626874;
$custom-dark: #000000;

JSON

{
  "hex": "#283040",
  "rgb": {
    "r": 40,
    "g": 48,
    "b": 64
  },
  "hsl": {
    "h": 220,
    "s": 23.077,
    "l": 20.392
  },
  "oklch": {
    "l": 0.30883,
    "c": 0.03103,
    "h": 264
  },
  "luminance": 0.02935
}

Semantic roles & 50–950 ramp

primary

#283040

secondary

#726752

accent

#A268C0

background

#F5F6F7

surface

#EAEBED

border

#C6C6C8

text

#050608

muted

#797A7B

Preview Lab

Preview with #283040

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

Preview Lab → · Contrast checker → · Palette generator →