#371B78#371B78

#371B78 is a dark, vivid violet. Relative luminance 0.030; OKLCH L 32.6% C 0.146 H 289.4°. Best body text is #FFFFFF at 13.20:1 contrast (WCAG AA passes).

Color values

HEX	#371B78
RGB	rgb(55, 27, 120)
HSL	hsl(258, 63%, 29%)
HSV	hsv(258, 78%, 47%)
CMYK	cmyk(54.2%, 77.5%, 0%, 52.9%)
CIE-LAB	lab(19.85, 37.17, -48.06)
CIE-LCH	lch(19.85, 60.76, 307.72°)
OKLab	oklab(32.57% 0.0486 -0.1381)
OKLCH	oklch(32.57% 0.146 289.4)
XYZ	xyz(5.3567, 2.9519, 18.0532)
Luminance	0.0295 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#371B78 #5C781B

analogous

#1B2E78 #371B78 #661B78

triadic

#371B78 #78371B #1B7837

tetradic

#371B78 #781B2E #5C781B #1B7866

square

#371B78 #781B2E #5C781B #1B7866

split-complementary

#371B78 #78661B #2E781B

monochromatic

#0B0619 #201046 #371B78 #4E26AA #683BD3

Accessibility & contrast

On white

13.20

#371B78 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#371B78 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #371B78

13.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##371B78	#FFFFFF	#000000	##FFFFFF
##371B78	1.00	13.20	1.59	13.20
#FFFFFF	13.20	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00327B

Deuteranopia (green-blind)

#002E76

Tritanopia (blue-blind)

#1F3448

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #371b78;
/* rgb */ color: rgb(55, 27, 120);
/* oklch */ color: oklch(32.6% 0.146 289.4);

Tailwind

colors: {
  custom: {
    50: '#765ba0',
    500: '#371b78',
    950: '#000000',
  },
}

SCSS

$custom: #371b78;
$custom-light: #765ba0;
$custom-dark: #000000;

JSON

{
  "hex": "#371b78",
  "rgb": {
    "r": 55,
    "g": 27,
    "b": 120
  },
  "hsl": {
    "h": 258.065,
    "s": 63.265,
    "l": 28.824
  },
  "oklch": {
    "l": 0.32567,
    "c": 0.14642,
    "h": 289.4
  },
  "luminance": 0.02952
}

Semantic roles & 50–950 ramp

primary

#371B78

secondary

#8CAC43

accent

#E641B5

background

#F7F5F9

surface

#EDE9F2

border

#C8C5CC

text

#09040F

muted

#7B797E

Preview Lab

Preview with #371B78

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

Preview Lab → · Contrast checker → · Palette generator →