#331B80#331B80

#331B80 is a dark, vivid violet. Relative luminance 0.030; OKLCH L 33.0% C 0.157 H 284.8°. Best body text is #FFFFFF at 13.05:1 contrast (WCAG AA passes).

Color values

HEX	#331B80
RGB	rgb(51, 27, 128)
HSL	hsl(254, 65%, 30%)
HSV	hsv(254, 79%, 50%)
CMYK	cmyk(60.2%, 78.9%, 0%, 49.8%)
CIE-LAB	lab(20.23, 39.02, -52.56)
CIE-LCH	lch(20.23, 65.45, 306.59°)
OKLab	oklab(32.97% 0.0399 -0.1514)
OKLCH	oklch(32.97% 0.157 284.8)
XYZ	xyz(5.6523, 3.0458, 20.7080)
Luminance	0.0305 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#331B80 #68801B

analogous

#1B3680 #331B80 #651B80

triadic

#331B80 #80331B #1B8033

tetradic

#331B80 #801B36 #68801B #1B8065

square

#331B80 #801B36 #68801B #1B8065

split-complementary

#331B80 #80651B #36801B

monochromatic

#0B061B #1F104D #331B80 #4726B3 #633FD6

Accessibility & contrast

On white

13.05

#331B80 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.61

#331B80 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #331B80

13.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##331B80	#FFFFFF	#000000	##FFFFFF
##331B80	1.00	13.05	1.61	13.05
#FFFFFF	13.05	1.00	21.00	1.00
#000000	1.61	21.00	1.00	21.00
##FFFFFF	13.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003483

Deuteranopia (green-blind)

#002E7E

Tritanopia (blue-blind)

#07384D

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #331b80;
/* rgb */ color: rgb(51, 27, 128);
/* oklch */ color: oklch(33.0% 0.157 284.8);

Tailwind

colors: {
  custom: {
    50: '#755ba6',
    500: '#331b80',
    950: '#000000',
  },
}

SCSS

$custom: #331b80;
$custom-light: #755ba6;
$custom-dark: #000000;

JSON

{
  "hex": "#331b80",
  "rgb": {
    "r": 51,
    "g": 27,
    "b": 128
  },
  "hsl": {
    "h": 254.257,
    "s": 65.161,
    "l": 30.392
  },
  "oklch": {
    "l": 0.32973,
    "c": 0.15659,
    "h": 284.8
  },
  "luminance": 0.03046
}

Semantic roles & 50–950 ramp

primary

#331B80

secondary

#99B443

accent

#E840C0

background

#F7F5FA

surface

#EEE9F4

border

#C9C5CE

text

#09040F

muted

#7B797F

Preview Lab

Preview with #331B80

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

Preview Lab → · Contrast checker → · Palette generator →