#281B64#281B64

#281B64 is a dark, vivid violet. Relative luminance 0.022; OKLCH L 29.0% C 0.122 H 284.0°. Best body text is #FFFFFF at 14.68:1 contrast (WCAG AA passes).

Color values

HEX	#281B64
RGB	rgb(40, 27, 100)
HSL	hsl(251, 57%, 25%)
HSV	hsv(251, 73%, 39%)
CMYK	cmyk(60%, 73%, 0%, 60.8%)
CIE-LAB	lab(16.28, 28.26, -40.98)
CIE-LCH	lch(16.28, 49.78, 304.59°)
OKLab	oklab(29.05% 0.0294 -0.1179)
OKLCH	oklch(29.05% 0.122 284)
XYZ	xyz(3.5666, 2.1549, 12.2821)
Luminance	0.0215 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281B64 #57641B

analogous

#1B3364 #281B64 #4D1B64

triadic

#281B64 #64281B #1B6428

tetradic

#281B64 #641B33 #57641B #1B644D

square

#281B64 #641B33 #57641B #1B644D

split-complementary

#281B64 #644D1B #33641B

monochromatic

#0A0718 #150E34 #281B64 #3B2894 #4F35C4

Accessibility & contrast

On white

14.68

#281B64 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.43

#281B64 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281B64

14.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281B64	#FFFFFF	#000000	##FFFFFF
##281B64	1.00	14.68	1.43	14.68
#FFFFFF	14.68	1.00	21.00	1.00
#000000	1.43	21.00	1.00	21.00
##FFFFFF	14.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002B66

Deuteranopia (green-blind)

#002663

Tritanopia (blue-blind)

#0A2E3D

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #281b64;
/* rgb */ color: rgb(40, 27, 100);
/* oklch */ color: oklch(29.0% 0.122 284.0);

Tailwind

colors: {
  custom: {
    50: '#695891',
    500: '#281b64',
    950: '#000000',
  },
}

SCSS

$custom: #281b64;
$custom-light: #695891;
$custom-dark: #000000;

JSON

{
  "hex": "#281b64",
  "rgb": {
    "r": 40,
    "g": 27,
    "b": 100
  },
  "hsl": {
    "h": 250.685,
    "s": 57.48,
    "l": 24.902
  },
  "oklch": {
    "l": 0.29047,
    "c": 0.12152,
    "h": 284
  },
  "luminance": 0.02155
}

Semantic roles & 50–950 ramp

primary

#281B64

secondary

#8A9941

accent

#E147C5

background

#F6F5F9

surface

#EBE9F1

border

#C6C5CB

text

#07030D

muted

#7A787E

Preview Lab

Preview with #281B64

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

Preview Lab → · Contrast checker → · Palette generator →