#331B58#331B58

#331B58 is a dark, moderate violet. Relative luminance 0.022; OKLCH L 29.1% C 0.105 H 297.6°. Best body text is #FFFFFF at 14.60:1 contrast (WCAG AA passes).

Color values

HEX	#331B58
RGB	rgb(51, 27, 88)
HSL	hsl(264, 53%, 23%)
HSV	hsv(264, 69%, 35%)
CMYK	cmyk(42%, 69.3%, 0%, 65.5%)
CIE-LAB	lab(16.47, 26.70, -32.63)
CIE-LCH	lch(16.47, 42.16, 309.29°)
OKLab	oklab(29.14% 0.0486 -0.093)
OKLCH	oklch(29.14% 0.105 297.6)
XYZ	xyz(3.5182, 2.1922, 9.4684)
Luminance	0.0219 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#331B58 #40581B

analogous

#1B2158 #331B58 #521B58

triadic

#331B58 #58331B #1B5833

tetradic

#331B58 #581B21 #40581B #1B5852

square

#331B58 #581B21 #40581B #1B5852

split-complementary

#331B58 #58521B #21581B

monochromatic

#0E0717 #180D29 #331B58 #4E2987 #6938B6

Accessibility & contrast

On white

14.60

#331B58 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.44

#331B58 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #331B58

14.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##331B58	#FFFFFF	#000000	##FFFFFF
##331B58	1.00	14.60	1.44	14.60
#FFFFFF	14.60	1.00	21.00	1.00
#000000	1.44	21.00	1.00	21.00
##FFFFFF	14.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00295A

Deuteranopia (green-blind)

#002857

Tritanopia (blue-blind)

#2A2936

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #331b58;
/* rgb */ color: rgb(51, 27, 88);
/* oklch */ color: oklch(29.1% 0.105 297.6);

Tailwind

colors: {
  custom: {
    50: '#6e5988',
    500: '#331b58',
    950: '#000000',
  },
}

SCSS

$custom: #331b58;
$custom-light: #6e5988;
$custom-dark: #000000;

JSON

{
  "hex": "#331b58",
  "rgb": {
    "r": 51,
    "g": 27,
    "b": 88
  },
  "hsl": {
    "h": 263.607,
    "s": 53.043,
    "l": 22.549
  },
  "oklch": {
    "l": 0.29142,
    "c": 0.1049,
    "h": 297.6
  },
  "luminance": 0.02192
}

Semantic roles & 50–950 ramp

primary

#331B58

secondary

#708E41

accent

#DC4BA3

background

#F6F5F8

surface

#ECE9F0

border

#C7C5CB

text

#07030B

muted

#7A787C

Preview Lab

Preview with #331B58

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

Preview Lab → · Contrast checker → · Palette generator →