#381B9B#381B9B

#381B9B is a dark, vivid violet. Relative luminance 0.040; OKLCH L 36.3% C 0.188 H 282.1°. Best body text is #FFFFFF at 11.68:1 contrast (WCAG AA passes).

Color values

HEX	#381B9B
RGB	rgb(56, 27, 155)
HSL	hsl(254, 70%, 36%)
HSV	hsv(254, 83%, 61%)
CMYK	cmyk(63.9%, 82.6%, 0%, 39.2%)
CIE-LAB	lab(23.64, 47.69, -63.73)
CIE-LCH	lch(23.64, 79.59, 306.81°)
OKLab	oklab(36.34% 0.0393 -0.1839)
OKLCH	oklch(36.34% 0.188 282.1)
XYZ	xyz(7.9374, 3.9906, 31.3560)
Luminance	0.0399 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#381B9B #7E9B1B

analogous

#1B3E9B #381B9B #781B9B

triadic

#381B9B #9B381B #1B9B38

tetradic

#381B9B #9B1B3E #7E9B1B #1B9B78

square

#381B9B #9B1B3E #7E9B1B #1B9B78

split-complementary

#381B9B #9B781B #3E9B1B

monochromatic

#120933 #251267 #381B9B #4B24CF #7150E0

Accessibility & contrast

On white

11.68

#381B9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#381B9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #381B9B

11.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##381B9B	#FFFFFF	#000000	##FFFFFF
##381B9B	1.00	11.68	1.80	11.68
#FFFFFF	11.68	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C9E

Deuteranopia (green-blind)

#003499

Tritanopia (blue-blind)

#00435C

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #381b9b;
/* rgb */ color: rgb(56, 27, 155);
/* oklch */ color: oklch(36.3% 0.188 282.1);

Tailwind

colors: {
  custom: {
    50: '#7d5dba',
    500: '#381b9b',
    950: '#000000',
  },
}

SCSS

$custom: #381b9b;
$custom-light: #7d5dba;
$custom-dark: #000000;

JSON

{
  "hex": "#381b9b",
  "rgb": {
    "r": 56,
    "g": 27,
    "b": 155
  },
  "hsl": {
    "h": 253.594,
    "s": 70.33,
    "l": 35.686
  },
  "oklch": {
    "l": 0.36335,
    "c": 0.188,
    "h": 282.1
  },
  "luminance": 0.03991
}

Semantic roles & 50–950 ramp

primary

#381B9B

secondary

#A9C34F

accent

#ED3BC5

background

#F8F5FB

surface

#EFE9F6

border

#CAC5D0

text

#0B0412

muted

#7C7981

Preview Lab

Preview with #381B9B

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

Preview Lab → · Contrast checker → · Palette generator →