#281B99#281B99

#281B99 is a dark, vivid blue. Relative luminance 0.035; OKLCH L 34.8% C 0.189 H 274.9°. Best body text is #FFFFFF at 12.30:1 contrast (WCAG AA passes).

Color values

HEX	#281B99
RGB	rgb(40, 27, 153)
HSL	hsl(246, 70%, 35%)
HSV	hsv(246, 82%, 60%)
CMYK	cmyk(73.9%, 82.4%, 0%, 40%)
CIE-LAB	lab(22.07, 45.65, -65.15)
CIE-LCH	lch(22.07, 79.55, 305.02°)
OKLab	oklab(34.84% 0.0162 -0.1884)
OKLCH	oklch(34.84% 0.189 274.9)
XYZ	xyz(7.0149, 3.5342, 30.4433)
Luminance	0.0353 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281B99 #8C991B

analogous

#1B4D99 #281B99 #671B99

triadic

#281B99 #99281B #1B9928

tetradic

#281B99 #991B4D #8C991B #1B9967

square

#281B99 #991B4D #8C991B #1B9967

split-complementary

#281B99 #99671B #4D991B

monochromatic

#0D0931 #1A1265 #281B99 #3624CD #5E4FE0

Accessibility & contrast

On white

12.30

#281B99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#281B99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281B99

12.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281B99	#FFFFFF	#000000	##FFFFFF
##281B99	1.00	12.30	1.71	12.30
#FFFFFF	12.30	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A9C

Deuteranopia (green-blind)

#002F97

Tritanopia (blue-blind)

#00435B

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #281b99;
/* rgb */ color: rgb(40, 27, 153);
/* oklch */ color: oklch(34.8% 0.189 274.9);

Tailwind

colors: {
  custom: {
    50: '#765cb8',
    500: '#281b99',
    950: '#000000',
  },
}

SCSS

$custom: #281b99;
$custom-light: #765cb8;
$custom-dark: #000000;

JSON

{
  "hex": "#281b99",
  "rgb": {
    "r": 40,
    "g": 27,
    "b": 153
  },
  "hsl": {
    "h": 246.19,
    "s": 70,
    "l": 35.294
  },
  "oklch": {
    "l": 0.34842,
    "c": 0.18906,
    "h": 274.9
  },
  "luminance": 0.03535
}

Semantic roles & 50–950 ramp

primary

#281B99

secondary

#B6C24E

accent

#ED3BDA

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #281B99

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

Preview Lab → · Contrast checker → · Palette generator →