#281C99#281C99

#281C99 is a dark, vivid blue. Relative luminance 0.036; OKLCH L 35.0% C 0.188 H 274.8°. Best body text is #FFFFFF at 12.23:1 contrast (WCAG AA passes).

Color values

HEX	#281C99
RGB	rgb(40, 28, 153)
HSL	hsl(246, 69%, 35%)
HSV	hsv(246, 82%, 60%)
CMYK	cmyk(73.9%, 81.7%, 0%, 40%)
CIE-LAB	lab(22.23, 45.16, -64.87)
CIE-LCH	lch(22.23, 79.04, 304.85°)
OKLab	oklab(34.96% 0.0158 -0.1876)
OKLCH	oklch(34.96% 0.188 274.8)
XYZ	xyz(7.0382, 3.5808, 30.4511)
Luminance	0.0358 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281C99 #8D991C

analogous

#1C4E99 #281C99 #661C99

triadic

#281C99 #99281C #1C9928

tetradic

#281C99 #991C4E #8D991C #1C9966

square

#281C99 #991C4E #8D991C #1C9966

split-complementary

#281C99 #99661C #4E991C

monochromatic

#0D0932 #1A1365 #281C99 #3625CD #5E50DF

Accessibility & contrast

On white

12.23

#281C99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.72

#281C99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281C99

12.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281C99	#FFFFFF	#000000	##FFFFFF
##281C99	1.00	12.23	1.72	12.23
#FFFFFF	12.23	1.00	21.00	1.00
#000000	1.72	21.00	1.00	21.00
##FFFFFF	12.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B9C

Deuteranopia (green-blind)

#002F97

Tritanopia (blue-blind)

#00435B

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #281c99;
/* rgb */ color: rgb(40, 28, 153);
/* oklch */ color: oklch(35.0% 0.188 274.8);

Tailwind

colors: {
  custom: {
    50: '#755cb8',
    500: '#281c99',
    950: '#000000',
  },
}

SCSS

$custom: #281c99;
$custom-light: #755cb8;
$custom-dark: #000000;

JSON

{
  "hex": "#281c99",
  "rgb": {
    "r": 40,
    "g": 28,
    "b": 153
  },
  "hsl": {
    "h": 245.76,
    "s": 69.061,
    "l": 35.49
  },
  "oklch": {
    "l": 0.34958,
    "c": 0.18824,
    "h": 274.8
  },
  "luminance": 0.03582
}

Semantic roles & 50–950 ramp

primary

#281C99

secondary

#B7C24F

accent

#EC3CDB

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #281C99

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

Preview Lab → · Contrast checker → · Palette generator →