#391B81#391B81

#391B81 is a dark, vivid violet. Relative luminance 0.032; OKLCH L 33.7% C 0.157 H 288.2°. Best body text is #FFFFFF at 12.74:1 contrast (WCAG AA passes).

Color values

HEX	#391B81
RGB	rgb(57, 27, 129)
HSL	hsl(258, 65%, 31%)
HSV	hsv(258, 79%, 51%)
CMYK	cmyk(55.8%, 79.1%, 0%, 49.4%)
CIE-LAB	lab(20.97, 40.16, -51.94)
CIE-LCH	lch(20.97, 65.65, 307.71°)
OKLab	oklab(33.68% 0.0492 -0.1494)
OKLCH	oklch(33.68% 0.157 288.2)
XYZ	xyz(6.0406, 3.2384, 21.0714)
Luminance	0.0324 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

#4B006E

ΔE00 6.46

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#391B81 #63811B

analogous

#1B3081 #391B81 #6C1B81

triadic

#391B81 #81391B #1B8139

tetradic

#391B81 #811B30 #63811B #1B816C

square

#391B81 #811B30 #63811B #1B816C

split-complementary

#391B81 #816C1B #30811B

monochromatic

#0C061C #23104E #391B81 #4F26B4 #6C3FD7

Accessibility & contrast

On white

12.74

#391B81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#391B81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #391B81

12.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##391B81	#FFFFFF	#000000	##FFFFFF
##391B81	1.00	12.74	1.65	12.74
#FFFFFF	12.74	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003584

Deuteranopia (green-blind)

#00307F

Tritanopia (blue-blind)

#1B384D

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #391b81;
/* rgb */ color: rgb(57, 27, 129);
/* oklch */ color: oklch(33.7% 0.157 288.2);

Tailwind

colors: {
  custom: {
    50: '#785ba7',
    500: '#391b81',
    950: '#000000',
  },
}

SCSS

$custom: #391b81;
$custom-light: #785ba7;
$custom-dark: #000000;

JSON

{
  "hex": "#391b81",
  "rgb": {
    "r": 57,
    "g": 27,
    "b": 129
  },
  "hsl": {
    "h": 257.647,
    "s": 65.385,
    "l": 30.588
  },
  "oklch": {
    "l": 0.33681,
    "c": 0.1573,
    "h": 288.2
  },
  "luminance": 0.03239
}

Semantic roles & 50–950 ramp

primary

#391B81

secondary

#93B543

accent

#E83FB7

background

#F7F5FA

surface

#EEE9F4

border

#C9C5CE

text

#0A040F

muted

#7C797F

Preview Lab

Preview with #391B81

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

Preview Lab → · Contrast checker → · Palette generator →