#381B81#381B81

#381B81 is a dark, vivid violet. Relative luminance 0.032; OKLCH L 33.6% C 0.157 H 287.6°. Best body text is #FFFFFF at 12.79:1 contrast (WCAG AA passes).

Color values

HEX	#381B81
RGB	rgb(56, 27, 129)
HSL	hsl(257, 65%, 31%)
HSV	hsv(257, 79%, 51%)
CMYK	cmyk(56.6%, 79.1%, 0%, 49.4%)
CIE-LAB	lab(20.86, 40.02, -52.12)
CIE-LCH	lch(20.86, 65.71, 307.51°)
OKLab	oklab(33.58% 0.0476 -0.15)
OKLCH	oklch(33.58% 0.157 287.6)
XYZ	xyz(5.9841, 3.2093, 21.0688)
Luminance	0.0321 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#381B81 #64811B

analogous

#1B3181 #381B81 #6B1B81

triadic

#381B81 #81381B #1B8138

tetradic

#381B81 #811B31 #64811B #1B816B

square

#381B81 #811B31 #64811B #1B816B

split-complementary

#381B81 #816B1B #31811B

monochromatic

#0C061C #22104E #381B81 #4E26B4 #6B3FD7

Accessibility & contrast

On white

12.79

#381B81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.64

#381B81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #381B81

12.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##381B81	#FFFFFF	#000000	##FFFFFF
##381B81	1.00	12.79	1.64	12.79
#FFFFFF	12.79	1.00	21.00	1.00
#000000	1.64	21.00	1.00	21.00
##FFFFFF	12.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003484

Deuteranopia (green-blind)

#002F7F

Tritanopia (blue-blind)

#19384D

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #381b81;
/* rgb */ color: rgb(56, 27, 129);
/* oklch */ color: oklch(33.6% 0.157 287.6);

Tailwind

colors: {
  custom: {
    50: '#785ba7',
    500: '#381b81',
    950: '#000000',
  },
}

SCSS

$custom: #381b81;
$custom-light: #785ba7;
$custom-dark: #000000;

JSON

{
  "hex": "#381b81",
  "rgb": {
    "r": 56,
    "g": 27,
    "b": 129
  },
  "hsl": {
    "h": 257.059,
    "s": 65.385,
    "l": 30.588
  },
  "oklch": {
    "l": 0.33578,
    "c": 0.15736,
    "h": 287.6
  },
  "luminance": 0.0321
}

Semantic roles & 50–950 ramp

primary

#381B81

secondary

#94B543

accent

#E83FB8

background

#F7F5FA

surface

#EEE9F4

border

#C9C5CE

text

#0A040F

muted

#7C797F

Preview Lab

Preview with #381B81

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

Preview Lab → · Contrast checker → · Palette generator →