#331B68#331B68

#331B68 is a dark, vivid violet. Relative luminance 0.025; OKLCH L 30.6% C 0.126 H 291.4°. Best body text is #FFFFFF at 14.02:1 contrast (WCAG AA passes).

Color values

HEX	#331B68
RGB	rgb(51, 27, 104)
HSL	hsl(259, 59%, 26%)
HSV	hsv(259, 74%, 41%)
CMYK	cmyk(51%, 74%, 0%, 59.2%)
CIE-LAB	lab(17.86, 31.59, -40.98)
CIE-LCH	lch(17.86, 51.74, 307.63°)
OKLab	oklab(30.58% 0.046 -0.1175)
OKLCH	oklch(30.58% 0.126 291.4)
XYZ	xyz(4.2552, 2.4870, 13.3499)
Luminance	0.0249 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#331B68 #50681B

analogous

#1B2968 #331B68 #591B68

triadic

#331B68 #68331B #1B6833

tetradic

#331B68 #681B29 #50681B #1B6859

square

#331B68 #681B29 #50681B #1B6859

split-complementary

#331B68 #68591B #29681B

monochromatic

#0C0618 #1B0E37 #331B68 #4B2899 #6334C9

Accessibility & contrast

On white

14.02

#331B68 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.50

#331B68 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #331B68

14.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##331B68	#FFFFFF	#000000	##FFFFFF
##331B68	1.00	14.02	1.50	14.02
#FFFFFF	14.02	1.00	21.00	1.00
#000000	1.50	21.00	1.00	21.00
##FFFFFF	14.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D6A

Deuteranopia (green-blind)

#002A66

Tritanopia (blue-blind)

#222F3F

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #331b68;
/* rgb */ color: rgb(51, 27, 104);
/* oklch */ color: oklch(30.6% 0.126 291.4);

Tailwind

colors: {
  custom: {
    50: '#715994',
    500: '#331b68',
    950: '#000000',
  },
}

SCSS

$custom: #331b68;
$custom-light: #715994;
$custom-dark: #000000;

JSON

{
  "hex": "#331b68",
  "rgb": {
    "r": 51,
    "g": 27,
    "b": 104
  },
  "hsl": {
    "h": 258.701,
    "s": 58.779,
    "l": 25.686
  },
  "oklch": {
    "l": 0.30579,
    "c": 0.1262,
    "h": 291.4
  },
  "luminance": 0.02487
}

Semantic roles & 50–950 ramp

primary

#331B68

secondary

#819D42

accent

#E246B1

background

#F7F5F9

surface

#EDE9F1

border

#C8C5CB

text

#08040D

muted

#7B797E

Preview Lab

Preview with #331B68

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

Preview Lab → · Contrast checker → · Palette generator →