#331B8C#331B8C

#331B8C is a dark, vivid violet. Relative luminance 0.034; OKLCH L 34.3% C 0.171 H 282.2°. Best body text is #FFFFFF at 12.53:1 contrast (WCAG AA passes).

Color values

HEX	#331B8C
RGB	rgb(51, 27, 140)
HSL	hsl(253, 68%, 33%)
HSV	hsv(253, 81%, 55%)
CMYK	cmyk(63.6%, 80.7%, 0%, 45.1%)
CIE-LAB	lab(21.51, 42.68, -57.99)
CIE-LCH	lch(21.51, 72.00, 306.36°)
OKLab	oklab(34.25% 0.0363 -0.1673)
OKLCH	oklch(34.25% 0.171 282.2)
XYZ	xyz(6.4893, 3.3807, 25.1164)
Luminance	0.0338 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#331B8C #748C1B

analogous

#1B3C8C #331B8C #6B1B8C

triadic

#331B8C #8C331B #1B8C33

tetradic

#331B8C #8C1B3C #748C1B #1B8C6B

square

#331B8C #8C1B3C #748C1B #1B8C6B

split-complementary

#331B8C #8C6B1B #3C8C1B

monochromatic

#0E0725 #201159 #331B8C #4625BF #6646DB

Accessibility & contrast

On white

12.53

#331B8C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#331B8C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #331B8C

12.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##331B8C	#FFFFFF	#000000	##FFFFFF
##331B8C	1.00	12.53	1.68	12.53
#FFFFFF	12.53	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00378F

Deuteranopia (green-blind)

#00308A

Tritanopia (blue-blind)

#003D53

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #331b8c;
/* rgb */ color: rgb(51, 27, 140);
/* oklch */ color: oklch(34.3% 0.171 282.2);

Tailwind

colors: {
  custom: {
    50: '#775baf',
    500: '#331b8c',
    950: '#000000',
  },
}

SCSS

$custom: #331b8c;
$custom-light: #775baf;
$custom-dark: #000000;

JSON

{
  "hex": "#331b8c",
  "rgb": {
    "r": 51,
    "g": 27,
    "b": 140
  },
  "hsl": {
    "h": 252.743,
    "s": 67.665,
    "l": 32.745
  },
  "oklch": {
    "l": 0.34251,
    "c": 0.17117,
    "h": 282.2
  },
  "luminance": 0.03381
}

Semantic roles & 50–950 ramp

primary

#331B8C

secondary

#A4BD46

accent

#EB3DC6

background

#F7F5FA

surface

#EEE9F5

border

#C9C5CF

text

#0A0410

muted

#7C797F

Preview Lab

Preview with #331B8C

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

Preview Lab → · Contrast checker → · Palette generator →