#381CB3#381CB3

#381CB3 is a dark, highly saturated violet. Relative luminance 0.049; OKLCH L 39.1% C 0.214 H 278.3°. Best body text is #FFFFFF at 10.58:1 contrast (WCAG AA passes).

Color values

HEX	#381CB3
RGB	rgb(56, 28, 179)
HSL	hsl(251, 73%, 41%)
HSV	hsv(251, 84%, 70%)
CMYK	cmyk(68.7%, 84.4%, 0%, 29.8%)
CIE-LAB	lab(26.52, 54.18, -73.48)
CIE-LCH	lch(26.52, 91.30, 306.40°)
OKLab	oklab(39.12% 0.0309 -0.2122)
OKLCH	oklch(39.12% 0.214 278.3)
XYZ	xyz(10.1802, 4.9250, 43.0532)
Luminance	0.0493 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#381CB3 #97B31C

analogous

#1C4BB3 #381CB3 #831CB3

triadic

#381CB3 #B3381C #1CB338

tetradic

#381CB3 #B31C4B #97B31C #1CB383

square

#381CB3 #B31C4B #97B31C #1CB383

split-complementary

#381CB3 #B3831C #4BB31C

monochromatic

#170B49 #27147E #381CB3 #4F2EDE #7B63E7

Accessibility & contrast

On white

10.58

#381CB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#381CB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #381CB3

10.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##381CB3	#FFFFFF	#000000	##FFFFFF
##381CB3	1.00	10.58	1.99	10.58
#FFFFFF	10.58	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0044B7

Deuteranopia (green-blind)

#0039B0

Tritanopia (blue-blind)

#004D6A

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #381cb3;
/* rgb */ color: rgb(56, 28, 179);
/* oklch */ color: oklch(39.1% 0.214 278.3);

Tailwind

colors: {
  custom: {
    50: '#825fcb',
    500: '#381cb3',
    950: '#000000',
  },
}

SCSS

$custom: #381cb3;
$custom-light: #825fcb;
$custom-dark: #000000;

JSON

{
  "hex": "#381cb3",
  "rgb": {
    "r": 56,
    "g": 28,
    "b": 179
  },
  "hsl": {
    "h": 251.126,
    "s": 72.947,
    "l": 40.588
  },
  "oklch": {
    "l": 0.39115,
    "c": 0.21446,
    "h": 278.3
  },
  "luminance": 0.04926
}

Semantic roles & 50–950 ramp

primary

#381CB3

secondary

#B7CB5F

accent

#F038CE

background

#F8F5FC

surface

#F0EAF9

border

#CBC6D2

text

#0C0514

muted

#7D7982

Preview Lab

Preview with #381CB3

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

Preview Lab → · Contrast checker → · Palette generator →