#391B66#391B66

#391B66 is a dark, vivid violet. Relative luminance 0.026; OKLCH L 31.1% C 0.124 H 296.8°. Best body text is #FFFFFF at 13.79:1 contrast (WCAG AA passes).

Color values

HEX	#391B66
RGB	rgb(57, 27, 102)
HSL	hsl(264, 58%, 25%)
HSV	hsv(264, 74%, 40%)
CMYK	cmyk(44.1%, 73.5%, 0%, 60%)
CIE-LAB	lab(18.42, 32.20, -38.72)
CIE-LCH	lch(18.42, 50.36, 309.75°)
OKLab	oklab(31.1% 0.056 -0.1106)
OKLCH	oklch(31.1% 0.124 296.8)
XYZ	xyz(4.4769, 2.6129, 12.8363)
Luminance	0.0261 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Dark Indigo

#1F0954

ΔE00 5.61

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#391B66 #48661B

analogous

#1B2266 #391B66 #5E1B66

triadic

#391B66 #66391B #1B6639

tetradic

#391B66 #661B22 #48661B #1B665E

square

#391B66 #661B22 #48661B #1B665E

split-complementary

#391B66 #665E1B #22661B

monochromatic

#0E0618 #1E0E36 #391B66 #542896 #6F35C7

Accessibility & contrast

On white

13.79

#391B66 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#391B66 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #391B66

13.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##391B66	#FFFFFF	#000000	##FFFFFF
##391B66	1.00	13.79	1.52	13.79
#FFFFFF	13.79	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D68

Deuteranopia (green-blind)

#002C64

Tritanopia (blue-blind)

#2D2D3E

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #391b66;
/* rgb */ color: rgb(57, 27, 102);
/* oklch */ color: oklch(31.1% 0.124 296.8);

Tailwind

colors: {
  custom: {
    50: '#745a92',
    500: '#391b66',
    950: '#000000',
  },
}

SCSS

$custom: #391b66;
$custom-light: #745a92;
$custom-dark: #000000;

JSON

{
  "hex": "#391b66",
  "rgb": {
    "r": 57,
    "g": 27,
    "b": 102
  },
  "hsl": {
    "h": 264,
    "s": 58.14,
    "l": 25.294
  },
  "oklch": {
    "l": 0.31095,
    "c": 0.124,
    "h": 296.8
  },
  "luminance": 0.02613
}

Semantic roles & 50–950 ramp

primary

#391B66

secondary

#779B41

accent

#E146A3

background

#F7F5F9

surface

#EDE9F1

border

#C8C5CB

text

#09040D

muted

#7B797E

Preview Lab

Preview with #391B66

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

Preview Lab → · Contrast checker → · Palette generator →