#281D81#281D81

#281D81 is a dark, vivid blue. Relative luminance 0.029; OKLCH L 32.4% C 0.158 H 277.8°. Best body text is #FFFFFF at 13.27:1 contrast (WCAG AA passes).

Color values

HEX	#281D81
RGB	rgb(40, 29, 129)
HSL	hsl(247, 63%, 31%)
HSV	hsv(247, 78%, 51%)
CMYK	cmyk(69%, 77.5%, 0%, 49.4%)
CIE-LAB	lab(19.70, 36.86, -54.10)
CIE-LCH	lch(19.70, 65.46, 304.27°)
OKLab	oklab(32.38% 0.0215 -0.1563)
OKLCH	oklch(32.38% 0.158 277.8)
XYZ	xyz(5.2756, 2.9144, 21.0491)
Luminance	0.0291 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281D81 #76811D

analogous

#1D4481 #281D81 #5A1D81

triadic

#281D81 #81281D #1D8128

tetradic

#281D81 #811D44 #76811D #1D815A

square

#281D81 #811D44 #76811D #1D815A

split-complementary

#281D81 #815A1D #44811D

monochromatic

#09071D #19124F #281D81 #3728B3 #5444D5

Accessibility & contrast

On white

13.27

#281D81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#281D81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281D81

13.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281D81	#FFFFFF	#000000	##FFFFFF
##281D81	1.00	13.27	1.58	13.27
#FFFFFF	13.27	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003484

Deuteranopia (green-blind)

#002B7F

Tritanopia (blue-blind)

#003A4E

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #281d81;
/* rgb */ color: rgb(40, 29, 129);
/* oklch */ color: oklch(32.4% 0.158 277.8);

Tailwind

colors: {
  custom: {
    50: '#705ba7',
    500: '#281d81',
    950: '#000000',
  },
}

SCSS

$custom: #281d81;
$custom-light: #705ba7;
$custom-dark: #000000;

JSON

{
  "hex": "#281d81",
  "rgb": {
    "r": 40,
    "g": 29,
    "b": 129
  },
  "hsl": {
    "h": 246.6,
    "s": 63.291,
    "l": 30.98
  },
  "oklch": {
    "l": 0.32382,
    "c": 0.15774,
    "h": 277.8
  },
  "luminance": 0.02915
}

Semantic roles & 50–950 ramp

primary

#281D81

secondary

#A8B446

accent

#E641D4

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #281D81

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

Preview Lab → · Contrast checker → · Palette generator →