#331B7F#331B7F

#331B7F is a dark, vivid violet. Relative luminance 0.030; OKLCH L 32.9% C 0.155 H 285.0°. Best body text is #FFFFFF at 13.09:1 contrast (WCAG AA passes).

Color values

HEX	#331B7F
RGB	rgb(51, 27, 127)
HSL	hsl(254, 65%, 30%)
HSV	hsv(254, 79%, 50%)
CMYK	cmyk(59.8%, 78.7%, 0%, 50.2%)
CIE-LAB	lab(20.12, 38.71, -52.09)
CIE-LCH	lch(20.12, 64.90, 306.61°)
OKLab	oklab(32.87% 0.0402 -0.1501)
OKLCH	oklch(32.87% 0.155 285)
XYZ	xyz(5.5868, 3.0196, 20.3630)
Luminance	0.0302 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#331B7F #677F1B

analogous

#1B357F #331B7F #651B7F

triadic

#331B7F #7F331B #1B7F33

tetradic

#331B7F #7F1B35 #677F1B #1B7F65

square

#331B7F #7F1B35 #677F1B #1B7F65

split-complementary

#331B7F #7F651B #357F1B

monochromatic

#0A061A #1F104D #331B7F #4726B1 #633ED6

Accessibility & contrast

On white

13.09

#331B7F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.60

#331B7F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #331B7F

13.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##331B7F	#FFFFFF	#000000	##FFFFFF
##331B7F	1.00	13.09	1.60	13.09
#FFFFFF	13.09	1.00	21.00	1.00
#000000	1.60	21.00	1.00	21.00
##FFFFFF	13.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003382

Deuteranopia (green-blind)

#002D7D

Tritanopia (blue-blind)

#09384C

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #331b7f;
/* rgb */ color: rgb(51, 27, 127);
/* oklch */ color: oklch(32.9% 0.155 285.0);

Tailwind

colors: {
  custom: {
    50: '#755ba5',
    500: '#331b7f',
    950: '#000000',
  },
}

SCSS

$custom: #331b7f;
$custom-light: #755ba5;
$custom-dark: #000000;

JSON

{
  "hex": "#331b7f",
  "rgb": {
    "r": 51,
    "g": 27,
    "b": 127
  },
  "hsl": {
    "h": 254.4,
    "s": 64.935,
    "l": 30.196
  },
  "oklch": {
    "l": 0.32869,
    "c": 0.15536,
    "h": 285
  },
  "luminance": 0.0302
}

Semantic roles & 50–950 ramp

primary

#331B7F

secondary

#98B343

accent

#E840C0

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#09040F

muted

#7B797F

Preview Lab

Preview with #331B7F

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

Preview Lab → · Contrast checker → · Palette generator →