#331B70#331B70

#331B70 is a dark, vivid violet. Relative luminance 0.027; OKLCH L 31.4% C 0.137 H 288.9°. Best body text is #FFFFFF at 13.71:1 contrast (WCAG AA passes).

Color values

HEX	#331B70
RGB	rgb(51, 27, 112)
HSL	hsl(257, 61%, 27%)
HSV	hsv(257, 76%, 44%)
CMYK	cmyk(54.5%, 75.9%, 0%, 56.1%)
CIE-LAB	lab(18.62, 34.07, -44.95)
CIE-LCH	lch(18.62, 56.41, 307.16°)
OKLab	oklab(31.35% 0.0442 -0.1292)
OKLCH	oklch(31.35% 0.137 288.9)
XYZ	xyz(4.6810, 2.6573, 15.5924)
Luminance	0.0266 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#331B70 #58701B

analogous

#1B2E70 #331B70 #5E1B70

triadic

#331B70 #70331B #1B7033

tetradic

#331B70 #701B2E #58701B #1B705E

square

#331B70 #701B2E #58701B #1B705E

split-complementary

#331B70 #705E1B #2E701B

monochromatic

#0B0619 #1D0F3F #331B70 #4927A1 #6237CF

Accessibility & contrast

On white

13.71

#331B70 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#331B70 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #331B70

13.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##331B70	#FFFFFF	#000000	##FFFFFF
##331B70	1.00	13.71	1.53	13.71
#FFFFFF	13.71	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F72

Deuteranopia (green-blind)

#002B6E

Tritanopia (blue-blind)

#1C3244

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #331b70;
/* rgb */ color: rgb(51, 27, 112);
/* oklch */ color: oklch(31.4% 0.137 288.9);

Tailwind

colors: {
  custom: {
    50: '#725a9a',
    500: '#331b70',
    950: '#000000',
  },
}

SCSS

$custom: #331b70;
$custom-light: #725a9a;
$custom-dark: #000000;

JSON

{
  "hex": "#331b70",
  "rgb": {
    "r": 51,
    "g": 27,
    "b": 112
  },
  "hsl": {
    "h": 256.941,
    "s": 61.151,
    "l": 27.255
  },
  "oklch": {
    "l": 0.3135,
    "c": 0.13653,
    "h": 288.9
  },
  "luminance": 0.02658
}

Semantic roles & 50–950 ramp

primary

#331B70

secondary

#89A542

accent

#E444B7

background

#F7F5F9

surface

#EDE9F2

border

#C8C5CC

text

#08040E

muted

#7B797E

Preview Lab

Preview with #331B70

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

Preview Lab → · Contrast checker → · Palette generator →