#281B93#281B93

#281B93 is a dark, vivid blue. Relative luminance 0.033; OKLCH L 34.1% C 0.182 H 275.6°. Best body text is #FFFFFF at 12.59:1 contrast (WCAG AA passes).

Color values

HEX	#281B93
RGB	rgb(40, 27, 147)
HSL	hsl(247, 69%, 34%)
HSV	hsv(247, 82%, 58%)
CMYK	cmyk(72.8%, 81.6%, 0%, 42.4%)
CIE-LAB	lab(21.36, 43.76, -62.61)
CIE-LCH	lch(21.36, 76.39, 304.95°)
OKLab	oklab(34.15% 0.0178 -0.181)
OKLCH	oklch(34.15% 0.182 275.6)
XYZ	xyz(6.5317, 3.3409, 27.8987)
Luminance	0.0334 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281B93 #86931B

analogous

#1B4A93 #281B93 #641B93

triadic

#281B93 #93281B #1B9328

tetradic

#281B93 #931B4A #86931B #1B9364

square

#281B93 #931B4A #86931B #1B9364

split-complementary

#281B93 #93641B #4A931B

monochromatic

#0C082C #1A125F #281B93 #3624C7 #5B4BDE

Accessibility & contrast

On white

12.59

#281B93 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#281B93 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281B93

12.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281B93	#FFFFFF	#000000	##FFFFFF
##281B93	1.00	12.59	1.67	12.59
#FFFFFF	12.59	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003896

Deuteranopia (green-blind)

#002E91

Tritanopia (blue-blind)

#004057

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #281b93;
/* rgb */ color: rgb(40, 27, 147);
/* oklch */ color: oklch(34.1% 0.182 275.6);

Tailwind

colors: {
  custom: {
    50: '#745bb4',
    500: '#281b93',
    950: '#000000',
  },
}

SCSS

$custom: #281b93;
$custom-light: #745bb4;
$custom-dark: #000000;

JSON

{
  "hex": "#281b93",
  "rgb": {
    "r": 40,
    "g": 27,
    "b": 147
  },
  "hsl": {
    "h": 246.5,
    "s": 68.966,
    "l": 34.118
  },
  "oklch": {
    "l": 0.34146,
    "c": 0.1819,
    "h": 275.6
  },
  "luminance": 0.03342
}

Semantic roles & 50–950 ramp

primary

#281B93

secondary

#B3C04A

accent

#EC3CD9

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0411

muted

#7C7980

Preview Lab

Preview with #281B93

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

Preview Lab → · Contrast checker → · Palette generator →