#381B66#381B66

#381B66 is a dark, vivid violet. Relative luminance 0.026; OKLCH L 31.0% C 0.124 H 296.1°. Best body text is #FFFFFF at 13.84:1 contrast (WCAG AA passes).

Color values

HEX	#381B66
RGB	rgb(56, 27, 102)
HSL	hsl(263, 58%, 25%)
HSV	hsv(263, 74%, 40%)
CMYK	cmyk(45.1%, 73.5%, 0%, 60%)
CIE-LAB	lab(18.29, 31.99, -38.93)
CIE-LCH	lch(18.29, 50.39, 309.41°)
OKLab	oklab(30.97% 0.0544 -0.1113)
OKLCH	oklch(30.97% 0.124 296.1)
XYZ	xyz(4.4205, 2.5838, 12.8336)
Luminance	0.0258 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#381B66 #49661B

analogous

#1B2366 #381B66 #5D1B66

triadic

#381B66 #66381B #1B6638

tetradic

#381B66 #661B23 #49661B #1B665D

square

#381B66 #661B23 #49661B #1B665D

split-complementary

#381B66 #665D1B #23661B

monochromatic

#0D0618 #1D0E36 #381B66 #532896 #6D35C7

Accessibility & contrast

On white

13.84

#381B66 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#381B66 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #381B66

13.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##381B66	#FFFFFF	#000000	##FFFFFF
##381B66	1.00	13.84	1.52	13.84
#FFFFFF	13.84	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D68

Deuteranopia (green-blind)

#002C64

Tritanopia (blue-blind)

#2C2D3E

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #381b66;
/* rgb */ color: rgb(56, 27, 102);
/* oklch */ color: oklch(31.0% 0.124 296.1);

Tailwind

colors: {
  custom: {
    50: '#735a92',
    500: '#381b66',
    950: '#000000',
  },
}

SCSS

$custom: #381b66;
$custom-light: #735a92;
$custom-dark: #000000;

JSON

{
  "hex": "#381b66",
  "rgb": {
    "r": 56,
    "g": 27,
    "b": 102
  },
  "hsl": {
    "h": 263.2,
    "s": 58.14,
    "l": 25.294
  },
  "oklch": {
    "l": 0.30974,
    "c": 0.12389,
    "h": 296.1
  },
  "luminance": 0.02584
}

Semantic roles & 50–950 ramp

primary

#381B66

secondary

#799B41

accent

#E146A5

background

#F7F5F9

surface

#EDE9F1

border

#C8C5CB

text

#08040D

muted

#7B797E

Preview Lab

Preview with #381B66

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

Preview Lab → · Contrast checker → · Palette generator →