#331F64#331F64

#331F64 is a dark, moderate violet. Relative luminance 0.026; OKLCH L 30.8% C 0.115 H 291.5°. Best body text is #FFFFFF at 13.81:1 contrast (WCAG AA passes).

Color values

HEX	#331F64
RGB	rgb(51, 31, 100)
HSL	hsl(257, 53%, 26%)
HSV	hsv(257, 69%, 39%)
CMYK	cmyk(49%, 69%, 0%, 60.8%)
CIE-LAB	lab(18.38, 27.94, -37.50)
CIE-LCH	lch(18.38, 46.77, 306.68°)
OKLab	oklab(30.84% 0.0423 -0.1073)
OKLCH	oklch(30.84% 0.115 291.5)
XYZ	xyz(4.1548, 2.6037, 12.3378)
Luminance	0.0260 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#331F64 #50641F

analogous

#1F2D64 #331F64 #551F64

triadic

#331F64 #64331F #1F6433

tetradic

#331F64 #641F2D #50641F #1F6455

square

#331F64 #641F2D #50641F #1F6455

split-complementary

#331F64 #64551F #2D641F

monochromatic

#0C0717 #1B1135 #331F64 #4B2D93 #633CC1

Accessibility & contrast

On white

13.81

#331F64 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#331F64 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #331F64

13.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##331F64	#FFFFFF	#000000	##FFFFFF
##331F64	1.00	13.81	1.52	13.81
#FFFFFF	13.81	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E66

Deuteranopia (green-blind)

#002B63

Tritanopia (blue-blind)

#242F3E

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #331f64;
/* rgb */ color: rgb(51, 31, 100);
/* oklch */ color: oklch(30.8% 0.115 291.5);

Tailwind

colors: {
  custom: {
    50: '#705c91',
    500: '#331f64',
    950: '#000000',
  },
}

SCSS

$custom: #331f64;
$custom-light: #705c91;
$custom-dark: #000000;

JSON

{
  "hex": "#331f64",
  "rgb": {
    "r": 51,
    "g": 31,
    "b": 100
  },
  "hsl": {
    "h": 257.391,
    "s": 52.672,
    "l": 25.686
  },
  "oklch": {
    "l": 0.30843,
    "c": 0.11532,
    "h": 291.5
  },
  "luminance": 0.02604
}

Semantic roles & 50–950 ramp

primary

#331F64

secondary

#819846

accent

#DC4CB2

background

#F7F5F8

surface

#EDE9F0

border

#C8C5CB

text

#08040D

muted

#7B797D

Preview Lab

Preview with #331F64

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

Preview Lab → · Contrast checker → · Palette generator →