#331B7D#331B7D

#331B7D is a dark, vivid violet. Relative luminance 0.030; OKLCH L 32.7% C 0.153 H 285.5°. Best body text is #FFFFFF at 13.18:1 contrast (WCAG AA passes).

Color values

HEX	#331B7D
RGB	rgb(51, 27, 125)
HSL	hsl(255, 64%, 30%)
HSV	hsv(255, 78%, 49%)
CMYK	cmyk(59.2%, 78.4%, 0%, 51%)
CIE-LAB	lab(19.92, 38.09, -51.16)
CIE-LCH	lch(19.92, 63.79, 306.67°)
OKLab	oklab(32.66% 0.0408 -0.1473)
OKLCH	oklch(32.66% 0.153 285.5)
XYZ	xyz(5.4577, 2.9680, 19.6834)
Luminance	0.0297 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#331B7D #657D1B

analogous

#1B347D #331B7D #641B7D

triadic

#331B7D #7D331B #1B7D33

tetradic

#331B7D #7D1B34 #657D1B #1B7D64

square

#331B7D #7D1B34 #657D1B #1B7D64

split-complementary

#331B7D #7D641B #347D1B

monochromatic

#0A0519 #1E104B #331B7D #4826AF #623DD5

Accessibility & contrast

On white

13.18

#331B7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#331B7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #331B7D

13.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##331B7D	#FFFFFF	#000000	##FFFFFF
##331B7D	1.00	13.18	1.59	13.18
#FFFFFF	13.18	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003380

Deuteranopia (green-blind)

#002D7B

Tritanopia (blue-blind)

#0D374B

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #331b7d;
/* rgb */ color: rgb(51, 27, 125);
/* oklch */ color: oklch(32.7% 0.153 285.5);

Tailwind

colors: {
  custom: {
    50: '#745aa4',
    500: '#331b7d',
    950: '#000000',
  },
}

SCSS

$custom: #331b7d;
$custom-light: #745aa4;
$custom-dark: #000000;

JSON

{
  "hex": "#331b7d",
  "rgb": {
    "r": 51,
    "g": 27,
    "b": 125
  },
  "hsl": {
    "h": 254.694,
    "s": 64.474,
    "l": 29.804
  },
  "oklch": {
    "l": 0.32661,
    "c": 0.15288,
    "h": 285.5
  },
  "luminance": 0.02968
}

Semantic roles & 50–950 ramp

primary

#331B7D

secondary

#96B143

accent

#E740BF

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#09040F

muted

#7B797F

Preview Lab

Preview with #331B7D

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

Preview Lab → · Contrast checker → · Palette generator →