#281C8A#281C8A

#281C8A is a dark, vivid blue. Relative luminance 0.031; OKLCH L 33.2% C 0.170 H 276.7°. Best body text is #FFFFFF at 12.94:1 contrast (WCAG AA passes).

Color values

HEX	#281C8A
RGB	rgb(40, 28, 138)
HSL	hsl(247, 66%, 33%)
HSV	hsv(247, 80%, 54%)
CMYK	cmyk(71%, 79.7%, 0%, 45.9%)
CIE-LAB	lab(20.50, 40.37, -58.43)
CIE-LCH	lch(20.50, 71.02, 304.64°)
OKLab	oklab(33.24% 0.0198 -0.1689)
OKLCH	oklch(33.24% 0.17 276.7)
XYZ	xyz(5.8763, 3.1161, 24.3316)
Luminance	0.0312 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281C8A #7E8A1C

analogous

#1C478A #281C8A #5F1C8A

triadic

#281C8A #8A281C #1C8A28

tetradic

#281C8A #8A1C47 #7E8A1C #1C8A5F

square

#281C8A #8A1C47 #7E8A1C #1C8A5F

split-complementary

#281C8A #8A5F1C #478A1C

monochromatic

#0B0724 #191257 #281C8A #3726BD #5747DA

Accessibility & contrast

On white

12.94

#281C8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.62

#281C8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281C8A

12.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281C8A	#FFFFFF	#000000	##FFFFFF
##281C8A	1.00	12.94	1.62	12.94
#FFFFFF	12.94	1.00	21.00	1.00
#000000	1.62	21.00	1.00	21.00
##FFFFFF	12.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00368D

Deuteranopia (green-blind)

#002D88

Tritanopia (blue-blind)

#003D52

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #281c8a;
/* rgb */ color: rgb(40, 28, 138);
/* oklch */ color: oklch(33.2% 0.170 276.7);

Tailwind

colors: {
  custom: {
    50: '#725bad',
    500: '#281c8a',
    950: '#000000',
  },
}

SCSS

$custom: #281c8a;
$custom-light: #725bad;
$custom-dark: #000000;

JSON

{
  "hex": "#281c8a",
  "rgb": {
    "r": 40,
    "g": 28,
    "b": 138
  },
  "hsl": {
    "h": 246.545,
    "s": 66.265,
    "l": 32.549
  },
  "oklch": {
    "l": 0.33243,
    "c": 0.17004,
    "h": 276.7
  },
  "luminance": 0.03117
}

Semantic roles & 50–950 ramp

primary

#281C8A

secondary

#AFBB46

accent

#E93FD7

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#090410

muted

#7B797F

Preview Lab

Preview with #281C8A

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

Preview Lab → · Contrast checker → · Palette generator →