#381B8B#381B8B

#381B8B is a dark, vivid violet. Relative luminance 0.035; OKLCH L 34.6% C 0.169 H 285.2°. Best body text is #FFFFFF at 12.37:1 contrast (WCAG AA passes).

Color values

HEX	#381B8B
RGB	rgb(56, 27, 139)
HSL	hsl(256, 67%, 33%)
HSV	hsv(256, 81%, 55%)
CMYK	cmyk(59.7%, 80.6%, 0%, 45.5%)
CIE-LAB	lab(21.90, 42.99, -56.70)
CIE-LCH	lch(21.90, 71.15, 307.17°)
OKLab	oklab(34.62% 0.0445 -0.1633)
OKLCH	oklch(34.62% 0.169 285.2)
XYZ	xyz(6.6816, 3.4883, 24.7423)
Luminance	0.0349 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#381B8B #6E8B1B

analogous

#1B368B #381B8B #701B8B

triadic

#381B8B #8B381B #1B8B38

tetradic

#381B8B #8B1B36 #6E8B1B #1B8B70

square

#381B8B #8B1B36 #6E8B1B #1B8B70

split-complementary

#381B8B #8B701B #368B1B

monochromatic

#0F0725 #231158 #381B8B #4D25BE #6C45DB

Accessibility & contrast

On white

12.37

#381B8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.70

#381B8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #381B8B

12.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##381B8B	#FFFFFF	#000000	##FFFFFF
##381B8B	1.00	12.37	1.70	12.37
#FFFFFF	12.37	1.00	21.00	1.00
#000000	1.70	21.00	1.00	21.00
##FFFFFF	12.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00378E

Deuteranopia (green-blind)

#003189

Tritanopia (blue-blind)

#093C53

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #381b8b;
/* rgb */ color: rgb(56, 27, 139);
/* oklch */ color: oklch(34.6% 0.169 285.2);

Tailwind

colors: {
  custom: {
    50: '#7a5cae',
    500: '#381b8b',
    950: '#000000',
  },
}

SCSS

$custom: #381b8b;
$custom-light: #7a5cae;
$custom-dark: #000000;

JSON

{
  "hex": "#381b8b",
  "rgb": {
    "r": 56,
    "g": 27,
    "b": 139
  },
  "hsl": {
    "h": 255.536,
    "s": 67.47,
    "l": 32.549
  },
  "oklch": {
    "l": 0.34615,
    "c": 0.16931,
    "h": 285.2
  },
  "luminance": 0.03489
}

Semantic roles & 50–950 ramp

primary

#381B8B

secondary

#9EBC45

accent

#EA3DBE

background

#F7F5FA

surface

#EEE9F4

border

#C9C5CE

text

#0A0410

muted

#7C797F

Preview Lab

Preview with #381B8B

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

Preview Lab → · Contrast checker → · Palette generator →