#331F8B#331F8B

#331F8B is a dark, vivid violet. Relative luminance 0.035; OKLCH L 34.6% C 0.166 H 281.8°. Best body text is #FFFFFF at 12.28:1 contrast (WCAG AA passes).

Color values

HEX	#331F8B
RGB	rgb(51, 31, 139)
HSL	hsl(251, 64%, 33%)
HSV	hsv(251, 78%, 55%)
CMYK	cmyk(63.3%, 77.7%, 0%, 45.5%)
CIE-LAB	lab(22.11, 40.33, -56.36)
CIE-LCH	lch(22.11, 69.31, 305.58°)
OKLab	oklab(34.64% 0.034 -0.1626)
OKLCH	oklch(34.64% 0.166 281.8)
XYZ	xyz(6.5140, 3.5474, 24.7625)
Luminance	0.0355 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#331F8B #778B1F

analogous

#1F418B #331F8B #691F8B

triadic

#331F8B #8B331F #1F8B33

tetradic

#331F8B #8B1F41 #778B1F #1F8B69

square

#331F8B #8B1F41 #778B1F #1F8B69

split-complementary

#331F8B #8B691F #418B1F

monochromatic

#0E0927 #211459 #331F8B #452ABD #674DD7

Accessibility & contrast

On white

12.28

#331F8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#331F8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #331F8B

12.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##331F8B	#FFFFFF	#000000	##FFFFFF
##331F8B	1.00	12.28	1.71	12.28
#FFFFFF	12.28	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00388E

Deuteranopia (green-blind)

#003189

Tritanopia (blue-blind)

#003E54

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #331f8b;
/* rgb */ color: rgb(51, 31, 139);
/* oklch */ color: oklch(34.6% 0.166 281.8);

Tailwind

colors: {
  custom: {
    50: '#775eae',
    500: '#331f8b',
    950: '#000000',
  },
}

SCSS

$custom: #331f8b;
$custom-light: #775eae;
$custom-dark: #000000;

JSON

{
  "hex": "#331f8b",
  "rgb": {
    "r": 51,
    "g": 31,
    "b": 139
  },
  "hsl": {
    "h": 251.111,
    "s": 63.529,
    "l": 33.333
  },
  "oklch": {
    "l": 0.34643,
    "c": 0.1661,
    "h": 281.8
  },
  "luminance": 0.03548
}

Semantic roles & 50–950 ramp

primary

#331F8B

secondary

#A6BA4C

accent

#E741C8

background

#F7F5FA

surface

#EEE9F4

border

#C9C5CE

text

#0A0410

muted

#7C797F

Preview Lab

Preview with #331F8B

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

Preview Lab → · Contrast checker → · Palette generator →