#331B51#331B51

#331B51 is a dark, moderate violet. Relative luminance 0.021; OKLCH L 28.6% C 0.095 H 301.0°. Best body text is #FFFFFF at 14.83:1 contrast (WCAG AA passes).

Color values

HEX	#331B51
RGB	rgb(51, 27, 81)
HSL	hsl(267, 50%, 21%)
HSV	hsv(267, 67%, 32%)
CMYK	cmyk(37%, 66.7%, 0%, 68.2%)
CIE-LAB	lab(15.91, 24.61, -28.80)
CIE-LCH	lch(15.91, 37.88, 310.52°)
OKLab	oklab(28.56% 0.0491 -0.0817)
OKLCH	oklch(28.56% 0.095 301)
XYZ	xyz(3.2420, 2.0817, 8.0140)
Luminance	0.0208 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#331B51 #39511B

analogous

#1B1E51 #331B51 #4E1B51

triadic

#331B51 #51331B #1B5133

tetradic

#331B51 #511B1E #39511B #1B514E

square

#331B51 #511B1E #39511B #1B514E

split-complementary

#331B51 #514E1B #1E511B

monochromatic

#0E0817 #160C23 #331B51 #502A7F #6D3AAD

Accessibility & contrast

On white

14.83

#331B51 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.42

#331B51 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #331B51

14.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##331B51	#FFFFFF	#000000	##FFFFFF
##331B51	1.00	14.83	1.42	14.83
#FFFFFF	14.83	1.00	21.00	1.00
#000000	1.42	21.00	1.00	21.00
##FFFFFF	14.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002753

Deuteranopia (green-blind)

#092750

Tritanopia (blue-blind)

#2D2633

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #331b51;
/* rgb */ color: rgb(51, 27, 81);
/* oklch */ color: oklch(28.6% 0.095 301.0);

Tailwind

colors: {
  custom: {
    50: '#6d5982',
    500: '#331b51',
    950: '#000000',
  },
}

SCSS

$custom: #331b51;
$custom-light: #6d5982;
$custom-dark: #000000;

JSON

{
  "hex": "#331b51",
  "rgb": {
    "r": 51,
    "g": 27,
    "b": 81
  },
  "hsl": {
    "h": 266.667,
    "s": 50,
    "l": 21.176
  },
  "oklch": {
    "l": 0.28564,
    "c": 0.09532,
    "h": 301
  },
  "luminance": 0.02082
}

Semantic roles & 50–950 ramp

primary

#331B51

secondary

#688741

accent

#DA4E9C

background

#F6F5F8

surface

#ECE9EF

border

#C7C5CA

text

#07030A

muted

#7A787C

Preview Lab

Preview with #331B51

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

Preview Lab → · Contrast checker → · Palette generator →