#331B8D#331B8D

#331B8D is a dark, vivid violet. Relative luminance 0.034; OKLCH L 34.4% C 0.172 H 282.1°. Best body text is #FFFFFF at 12.48:1 contrast (WCAG AA passes).

Color values

HEX	#331B8D
RGB	rgb(51, 27, 141)
HSL	hsl(253, 68%, 33%)
HSV	hsv(253, 81%, 55%)
CMYK	cmyk(63.8%, 80.9%, 0%, 44.7%)
CIE-LAB	lab(21.62, 42.99, -58.43)
CIE-LCH	lch(21.62, 72.54, 306.34°)
OKLab	oklab(34.36% 0.036 -0.1686)
OKLCH	oklch(34.36% 0.172 282.1)
XYZ	xyz(6.5634, 3.4103, 25.5065)
Luminance	0.0341 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#331B8D #758D1B

analogous

#1B3C8D #331B8D #6C1B8D

triadic

#331B8D #8D331B #1B8D33

tetradic

#331B8D #8D1B3C #758D1B #1B8D6C

square

#331B8D #8D1B3C #758D1B #1B8D6C

split-complementary

#331B8D #8D6C1B #3C8D1B

monochromatic

#0E0726 #20115A #331B8D #4625C0 #6647DC

Accessibility & contrast

On white

12.48

#331B8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#331B8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #331B8D

12.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##331B8D	#FFFFFF	#000000	##FFFFFF
##331B8D	1.00	12.48	1.68	12.48
#FFFFFF	12.48	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003790

Deuteranopia (green-blind)

#00308B

Tritanopia (blue-blind)

#003D54

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #331b8d;
/* rgb */ color: rgb(51, 27, 141);
/* oklch */ color: oklch(34.4% 0.172 282.1);

Tailwind

colors: {
  custom: {
    50: '#775bb0',
    500: '#331b8d',
    950: '#000000',
  },
}

SCSS

$custom: #331b8d;
$custom-light: #775bb0;
$custom-dark: #000000;

JSON

{
  "hex": "#331b8d",
  "rgb": {
    "r": 51,
    "g": 27,
    "b": 141
  },
  "hsl": {
    "h": 252.632,
    "s": 67.857,
    "l": 32.941
  },
  "oklch": {
    "l": 0.3436,
    "c": 0.17236,
    "h": 282.1
  },
  "luminance": 0.03411
}

Semantic roles & 50–950 ramp

primary

#331B8D

secondary

#A4BD46

accent

#EB3DC6

background

#F7F5FA

surface

#EEE9F5

border

#C9C5CF

text

#0A0411

muted

#7C7980

Preview Lab

Preview with #331B8D

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

Preview Lab → · Contrast checker → · Palette generator →