#281B92#281B92

#281B92 is a dark, vivid blue. Relative luminance 0.033; OKLCH L 34.0% C 0.181 H 275.8°. Best body text is #FFFFFF at 12.64:1 contrast (WCAG AA passes).

Color values

HEX	#281B92
RGB	rgb(40, 27, 146)
HSL	hsl(247, 69%, 34%)
HSV	hsv(247, 82%, 57%)
CMYK	cmyk(72.6%, 81.5%, 0%, 42.7%)
CIE-LAB	lab(21.24, 43.45, -62.19)
CIE-LCH	lch(21.24, 75.86, 304.94°)
OKLab	oklab(34.03% 0.0181 -0.1798)
OKLCH	oklch(34.03% 0.181 275.8)
XYZ	xyz(6.4536, 3.3097, 27.4873)
Luminance	0.0331 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281B92 #85921B

analogous

#1B4A92 #281B92 #641B92

triadic

#281B92 #92281B #1B9228

tetradic

#281B92 #921B4A #85921B #1B9264

square

#281B92 #921B4A #85921B #1B9264

split-complementary

#281B92 #92641B #4A921B

monochromatic

#0C082B #1A115E #281B92 #3625C6 #5A4ADE

Accessibility & contrast

On white

12.64

#281B92 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#281B92 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281B92

12.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281B92	#FFFFFF	#000000	##FFFFFF
##281B92	1.00	12.64	1.66	12.64
#FFFFFF	12.64	1.00	21.00	1.00
#000000	1.66	21.00	1.00	21.00
##FFFFFF	12.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003895

Deuteranopia (green-blind)

#002E90

Tritanopia (blue-blind)

#004057

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #281b92;
/* rgb */ color: rgb(40, 27, 146);
/* oklch */ color: oklch(34.0% 0.181 275.8);

Tailwind

colors: {
  custom: {
    50: '#745bb3',
    500: '#281b92',
    950: '#000000',
  },
}

SCSS

$custom: #281b92;
$custom-light: #745bb3;
$custom-dark: #000000;

JSON

{
  "hex": "#281b92",
  "rgb": {
    "r": 40,
    "g": 27,
    "b": 146
  },
  "hsl": {
    "h": 246.555,
    "s": 68.786,
    "l": 33.922
  },
  "oklch": {
    "l": 0.3403,
    "c": 0.18069,
    "h": 275.8
  },
  "luminance": 0.0331
}

Semantic roles & 50–950 ramp

primary

#281B92

secondary

#B3BF49

accent

#EC3CD8

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0411

muted

#7C7980

Preview Lab

Preview with #281B92

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

Preview Lab → · Contrast checker → · Palette generator →