#371B81#371B81

#371B81 is a dark, vivid violet. Relative luminance 0.032; OKLCH L 33.5% C 0.157 H 287.0°. Best body text is #FFFFFF at 12.83:1 contrast (WCAG AA passes).

Color values

HEX	#371B81
RGB	rgb(55, 27, 129)
HSL	hsl(256, 65%, 31%)
HSV	hsv(256, 79%, 51%)
CMYK	cmyk(57.4%, 79.1%, 0%, 49.4%)
CIE-LAB	lab(20.75, 39.87, -52.31)
CIE-LCH	lch(20.75, 65.77, 307.32°)
OKLab	oklab(33.48% 0.046 -0.1505)
OKLCH	oklch(33.48% 0.157 287)
XYZ	xyz(5.9287, 3.1807, 21.0662)
Luminance	0.0318 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#371B81 #65811B

analogous

#1B3281 #371B81 #6A1B81

triadic

#371B81 #81371B #1B8137

tetradic

#371B81 #811B32 #65811B #1B816A

square

#371B81 #811B32 #65811B #1B816A

split-complementary

#371B81 #816A1B #32811B

monochromatic

#0C061C #21104E #371B81 #4D26B4 #693FD7

Accessibility & contrast

On white

12.83

#371B81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.64

#371B81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #371B81

12.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##371B81	#FFFFFF	#000000	##FFFFFF
##371B81	1.00	12.83	1.64	12.83
#FFFFFF	12.83	1.00	21.00	1.00
#000000	1.64	21.00	1.00	21.00
##FFFFFF	12.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003484

Deuteranopia (green-blind)

#002F7F

Tritanopia (blue-blind)

#16384D

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #371b81;
/* rgb */ color: rgb(55, 27, 129);
/* oklch */ color: oklch(33.5% 0.157 287.0);

Tailwind

colors: {
  custom: {
    50: '#775ba7',
    500: '#371b81',
    950: '#000000',
  },
}

SCSS

$custom: #371b81;
$custom-light: #775ba7;
$custom-dark: #000000;

JSON

{
  "hex": "#371b81",
  "rgb": {
    "r": 55,
    "g": 27,
    "b": 129
  },
  "hsl": {
    "h": 256.471,
    "s": 65.385,
    "l": 30.588
  },
  "oklch": {
    "l": 0.33475,
    "c": 0.15742,
    "h": 287
  },
  "luminance": 0.03181
}

Semantic roles & 50–950 ramp

primary

#371B81

secondary

#95B543

accent

#E83FBA

background

#F7F5FA

surface

#EEE9F4

border

#C9C5CE

text

#0A040F

muted

#7C797F

Preview Lab

Preview with #371B81

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

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