#331B9A#331B9A

#331B9A is a dark, vivid violet. Relative luminance 0.038; OKLCH L 35.8% C 0.188 H 279.8°. Best body text is #FFFFFF at 11.90:1 contrast (WCAG AA passes).

Color values

HEX	#331B9A
RGB	rgb(51, 27, 154)
HSL	hsl(251, 70%, 35%)
HSV	hsv(251, 82%, 60%)
CMYK	cmyk(66.9%, 82.5%, 0%, 39.6%)
CIE-LAB	lab(23.07, 46.90, -64.08)
CIE-LCH	lch(23.07, 79.41, 306.20°)
OKLab	oklab(35.79% 0.0319 -0.185)
OKLCH	oklch(35.79% 0.188 279.8)
XYZ	xyz(7.5880, 3.8201, 30.9031)
Luminance	0.0382 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#331B9A #829A1B

analogous

#1B429A #331B9A #731B9A

triadic

#331B9A #9A331B #1B9A33

tetradic

#331B9A #9A1B42 #829A1B #1B9A73

square

#331B9A #9A1B42 #829A1B #1B9A73

split-complementary

#331B9A #9A731B #429A1B

monochromatic

#110932 #221266 #331B9A #4424CE #6B4FE0

Accessibility & contrast

On white

11.90

#331B9A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#331B9A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #331B9A

11.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##331B9A	#FFFFFF	#000000	##FFFFFF
##331B9A	1.00	11.90	1.76	11.90
#FFFFFF	11.90	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C9D

Deuteranopia (green-blind)

#003298

Tritanopia (blue-blind)

#00435C

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #331b9a;
/* rgb */ color: rgb(51, 27, 154);
/* oklch */ color: oklch(35.8% 0.188 279.8);

Tailwind

colors: {
  custom: {
    50: '#7a5cb9',
    500: '#331b9a',
    950: '#000000',
  },
}

SCSS

$custom: #331b9a;
$custom-light: #7a5cb9;
$custom-dark: #000000;

JSON

{
  "hex": "#331b9a",
  "rgb": {
    "r": 51,
    "g": 27,
    "b": 154
  },
  "hsl": {
    "h": 251.339,
    "s": 70.166,
    "l": 35.49
  },
  "oklch": {
    "l": 0.35793,
    "c": 0.18773,
    "h": 279.8
  },
  "luminance": 0.03821
}

Semantic roles & 50–950 ramp

primary

#331B9A

secondary

#ADC34E

accent

#ED3BCB

background

#F8F5FB

surface

#EFE9F6

border

#CAC5D0

text

#0B0412

muted

#7C7981

Preview Lab

Preview with #331B9A

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

Preview Lab → · Contrast checker → · Palette generator →