#391B78#391B78

#391B78 is a dark, vivid violet. Relative luminance 0.030; OKLCH L 32.8% C 0.146 H 290.7°. Best body text is #FFFFFF at 13.11:1 contrast (WCAG AA passes).

Color values

HEX	#391B78
RGB	rgb(57, 27, 120)
HSL	hsl(259, 63%, 29%)
HSV	hsv(259, 78%, 47%)
CMYK	cmyk(52.5%, 77.5%, 0%, 52.9%)
CIE-LAB	lab(20.08, 37.50, -47.67)
CIE-LCH	lch(20.08, 60.65, 308.19°)
OKLab	oklab(32.78% 0.0518 -0.1369)
OKLCH	oklch(32.78% 0.146 290.7)
XYZ	xyz(5.4685, 3.0096, 18.0584)
Luminance	0.0301 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#391B78 #5A781B

analogous

#1B2C78 #391B78 #681B78

triadic

#391B78 #78391B #1B7839

tetradic

#391B78 #781B2C #5A781B #1B7868

square

#391B78 #781B2C #5A781B #1B7868

split-complementary

#391B78 #78681B #2C781B

monochromatic

#0C0619 #211046 #391B78 #5126AA #6C3BD3

Accessibility & contrast

On white

13.11

#391B78 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.60

#391B78 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #391B78

13.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##391B78	#FFFFFF	#000000	##FFFFFF
##391B78	1.00	13.11	1.60	13.11
#FFFFFF	13.11	1.00	21.00	1.00
#000000	1.60	21.00	1.00	21.00
##FFFFFF	13.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00327B

Deuteranopia (green-blind)

#002E76

Tritanopia (blue-blind)

#233448

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #391b78;
/* rgb */ color: rgb(57, 27, 120);
/* oklch */ color: oklch(32.8% 0.146 290.7);

Tailwind

colors: {
  custom: {
    50: '#775ba0',
    500: '#391b78',
    950: '#000000',
  },
}

SCSS

$custom: #391b78;
$custom-light: #775ba0;
$custom-dark: #000000;

JSON

{
  "hex": "#391b78",
  "rgb": {
    "r": 57,
    "g": 27,
    "b": 120
  },
  "hsl": {
    "h": 259.355,
    "s": 63.265,
    "l": 28.824
  },
  "oklch": {
    "l": 0.32784,
    "c": 0.14639,
    "h": 290.7
  },
  "luminance": 0.0301
}

Semantic roles & 50–950 ramp

primary

#391B78

secondary

#8AAC43

accent

#E641B1

background

#F7F5F9

surface

#EEE9F2

border

#C9C5CC

text

#09040F

muted

#7B797E

Preview Lab

Preview with #391B78

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

Preview Lab → · Contrast checker → · Palette generator →