#281C66#281C66

#281C66 is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.4% C 0.123 H 283.2°. Best body text is #FFFFFF at 14.50:1 contrast (WCAG AA passes).

Color values

HEX	#281C66
RGB	rgb(40, 28, 102)
HSL	hsl(250, 57%, 25%)
HSV	hsv(250, 73%, 40%)
CMYK	cmyk(60.8%, 72.5%, 0%, 60%)
CIE-LAB	lab(16.70, 28.31, -41.61)
CIE-LCH	lch(16.70, 50.32, 304.23°)
OKLab	oklab(29.41% 0.0281 -0.1197)
OKLCH	oklch(29.41% 0.123 283.2)
XYZ	xyz(3.6879, 2.2407, 12.8060)
Luminance	0.0224 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281C66 #5A661C

analogous

#1C3566 #281C66 #4D1C66

triadic

#281C66 #66281C #1C6628

tetradic

#281C66 #661C35 #5A661C #1C664D

square

#281C66 #661C35 #5A661C #1C664D

split-complementary

#281C66 #664D1C #35661C

monochromatic

#090718 #150F36 #281C66 #3B2996 #4E36C6

Accessibility & contrast

On white

14.50

#281C66 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.45

#281C66 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281C66

14.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281C66	#FFFFFF	#000000	##FFFFFF
##281C66	1.00	14.50	1.45	14.50
#FFFFFF	14.50	1.00	21.00	1.00
#000000	1.45	21.00	1.00	21.00
##FFFFFF	14.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002C68

Deuteranopia (green-blind)

#002765

Tritanopia (blue-blind)

#072F3E

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #281c66;
/* rgb */ color: rgb(40, 28, 102);
/* oklch */ color: oklch(29.4% 0.123 283.2);

Tailwind

colors: {
  custom: {
    50: '#6a5992',
    500: '#281c66',
    950: '#000000',
  },
}

SCSS

$custom: #281c66;
$custom-light: #6a5992;
$custom-dark: #000000;

JSON

{
  "hex": "#281c66",
  "rgb": {
    "r": 40,
    "g": 28,
    "b": 102
  },
  "hsl": {
    "h": 249.73,
    "s": 56.923,
    "l": 25.49
  },
  "oklch": {
    "l": 0.2941,
    "c": 0.123,
    "h": 283.2
  },
  "luminance": 0.02241
}

Semantic roles & 50–950 ramp

primary

#281C66

secondary

#8D9B43

accent

#E048C7

background

#F6F5F9

surface

#EBE9F1

border

#C6C5CB

text

#07030D

muted

#7A787E

Preview Lab

Preview with #281C66

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

Preview Lab → · Contrast checker → · Palette generator →