#381FB4#381FB4

#381FB4 is a dark, highly saturated violet. Relative luminance 0.051; OKLCH L 39.5% C 0.213 H 277.9°. Best body text is #FFFFFF at 10.38:1 contrast (WCAG AA passes).

Color values

HEX	#381FB4
RGB	rgb(56, 31, 180)
HSL	hsl(250, 71%, 41%)
HSV	hsv(250, 83%, 71%)
CMYK	cmyk(68.9%, 82.8%, 0%, 29.4%)
CIE-LAB	lab(27.06, 53.21, -73.19)
CIE-LCH	lch(27.06, 90.49, 306.02°)
OKLab	oklab(39.52% 0.0294 -0.2114)
OKLCH	oklch(39.52% 0.213 277.9)
XYZ	xyz(10.3564, 5.1151, 43.6127)
Luminance	0.0512 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#381FB4 #9BB41F

analogous

#1F51B4 #381FB4 #831FB4

triadic

#381FB4 #B4381F #1FB438

tetradic

#381FB4 #B41F51 #9BB41F #1FB483

square

#381FB4 #B41F51 #9BB41F #1FB483

split-complementary

#381FB4 #B4831F #51B41F

monochromatic

#180D4C #281680 #381FB4 #5034DC #7D68E5

Accessibility & contrast

On white

10.38

#381FB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#381FB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #381FB4

10.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##381FB4	#FFFFFF	#000000	##FFFFFF
##381FB4	1.00	10.38	2.02	10.38
#FFFFFF	10.38	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0046B8

Deuteranopia (green-blind)

#003AB1

Tritanopia (blue-blind)

#004E6B

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #381fb4;
/* rgb */ color: rgb(56, 31, 180);
/* oklch */ color: oklch(39.5% 0.213 277.9);

Tailwind

colors: {
  custom: {
    50: '#8261cc',
    500: '#381fb4',
    950: '#000000',
  },
}

SCSS

$custom: #381fb4;
$custom-light: #8261cc;
$custom-dark: #000000;

JSON

{
  "hex": "#381fb4",
  "rgb": {
    "r": 56,
    "g": 31,
    "b": 180
  },
  "hsl": {
    "h": 250.067,
    "s": 70.616,
    "l": 41.373
  },
  "oklch": {
    "l": 0.3952,
    "c": 0.21344,
    "h": 277.9
  },
  "luminance": 0.05116
}

Semantic roles & 50–950 ramp

primary

#381FB4

secondary

#B9CB64

accent

#ED3ACF

background

#F8F5FC

surface

#F0EAF9

border

#CBC6D2

text

#0C0514

muted

#7D7982

Preview Lab

Preview with #381FB4

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

Preview Lab → · Contrast checker → · Palette generator →