#331B77#331B77

#331B77 is a dark, vivid violet. Relative luminance 0.028; OKLCH L 32.0% C 0.145 H 287.0°. Best body text is #FFFFFF at 13.43:1 contrast (WCAG AA passes).

Color values

HEX	#331B77
RGB	rgb(51, 27, 119)
HSL	hsl(256, 63%, 29%)
HSV	hsv(256, 77%, 47%)
CMYK	cmyk(57.1%, 77.3%, 0%, 53.3%)
CIE-LAB	lab(19.31, 36.24, -48.33)
CIE-LCH	lch(19.31, 60.41, 306.86°)
OKLab	oklab(32.05% 0.0425 -0.1391)
OKLCH	oklch(32.05% 0.145 287)
XYZ	xyz(5.0860, 2.8193, 17.7254)
Luminance	0.0282 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#331B77 #5F771B

analogous

#1B3177 #331B77 #611B77

triadic

#331B77 #77331B #1B7733

tetradic

#331B77 #771B31 #5F771B #1B7761

square

#331B77 #771B31 #5F771B #1B7761

split-complementary

#331B77 #77611B #31771B

monochromatic

#0B0619 #1E1045 #331B77 #4826A9 #623AD2

Accessibility & contrast

On white

13.43

#331B77 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#331B77 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #331B77

13.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##331B77	#FFFFFF	#000000	##FFFFFF
##331B77	1.00	13.43	1.56	13.43
#FFFFFF	13.43	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00317A

Deuteranopia (green-blind)

#002C75

Tritanopia (blue-blind)

#153447

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #331b77;
/* rgb */ color: rgb(51, 27, 119);
/* oklch */ color: oklch(32.0% 0.145 287.0);

Tailwind

colors: {
  custom: {
    50: '#735a9f',
    500: '#331b77',
    950: '#000000',
  },
}

SCSS

$custom: #331b77;
$custom-light: #735a9f;
$custom-dark: #000000;

JSON

{
  "hex": "#331b77",
  "rgb": {
    "r": 51,
    "g": 27,
    "b": 119
  },
  "hsl": {
    "h": 255.652,
    "s": 63.014,
    "l": 28.627
  },
  "oklch": {
    "l": 0.32047,
    "c": 0.14539,
    "h": 287
  },
  "luminance": 0.0282
}

Semantic roles & 50–950 ramp

primary

#331B77

secondary

#90AB42

accent

#E642BB

background

#F7F5F9

surface

#EDE9F2

border

#C8C5CC

text

#09040F

muted

#7B797E

Preview Lab

Preview with #331B77

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

Preview Lab → · Contrast checker → · Palette generator →