#331B7E#331B7E

#331B7E is a dark, vivid violet. Relative luminance 0.030; OKLCH L 32.8% C 0.154 H 285.2°. Best body text is #FFFFFF at 13.13:1 contrast (WCAG AA passes).

Color values

HEX	#331B7E
RGB	rgb(51, 27, 126)
HSL	hsl(255, 65%, 30%)
HSV	hsv(255, 79%, 49%)
CMYK	cmyk(59.5%, 78.6%, 0%, 50.6%)
CIE-LAB	lab(20.02, 38.40, -51.63)
CIE-LCH	lch(20.02, 64.34, 306.64°)
OKLab	oklab(32.77% 0.0405 -0.1487)
OKLCH	oklch(32.77% 0.154 285.2)
XYZ	xyz(5.5219, 2.9937, 20.0215)
Luminance	0.0299 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#331B7E #667E1B

analogous

#1B357E #331B7E #641B7E

triadic

#331B7E #7E331B #1B7E33

tetradic

#331B7E #7E1B35 #667E1B #1B7E64

square

#331B7E #7E1B35 #667E1B #1B7E64

split-complementary

#331B7E #7E641B #357E1B

monochromatic

#0A0519 #1F104C #331B7E #4726B0 #633ED6

Accessibility & contrast

On white

13.13

#331B7E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.60

#331B7E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #331B7E

13.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##331B7E	#FFFFFF	#000000	##FFFFFF
##331B7E	1.00	13.13	1.60	13.13
#FFFFFF	13.13	1.00	21.00	1.00
#000000	1.60	21.00	1.00	21.00
##FFFFFF	13.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003381

Deuteranopia (green-blind)

#002D7C

Tritanopia (blue-blind)

#0B374B

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #331b7e;
/* rgb */ color: rgb(51, 27, 126);
/* oklch */ color: oklch(32.8% 0.154 285.2);

Tailwind

colors: {
  custom: {
    50: '#745ba4',
    500: '#331b7e',
    950: '#000000',
  },
}

SCSS

$custom: #331b7e;
$custom-light: #745ba4;
$custom-dark: #000000;

JSON

{
  "hex": "#331b7e",
  "rgb": {
    "r": 51,
    "g": 27,
    "b": 126
  },
  "hsl": {
    "h": 254.545,
    "s": 64.706,
    "l": 30
  },
  "oklch": {
    "l": 0.32765,
    "c": 0.15412,
    "h": 285.2
  },
  "luminance": 0.02994
}

Semantic roles & 50–950 ramp

primary

#331B7E

secondary

#97B243

accent

#E840BF

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#09040F

muted

#7B797F

Preview Lab

Preview with #331B7E

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

Preview Lab → · Contrast checker → · Palette generator →