#371B9B#371B9B

#371B9B is a dark, vivid violet. Relative luminance 0.040; OKLCH L 36.2% C 0.188 H 281.6°. Best body text is #FFFFFF at 11.71:1 contrast (WCAG AA passes).

Color values

HEX	#371B9B
RGB	rgb(55, 27, 155)
HSL	hsl(253, 70%, 36%)
HSV	hsv(253, 83%, 61%)
CMYK	cmyk(64.5%, 82.6%, 0%, 39.2%)
CIE-LAB	lab(23.55, 47.58, -63.89)
CIE-LCH	lch(23.55, 79.66, 306.68°)
OKLab	oklab(36.25% 0.0377 -0.1843)
OKLCH	oklch(36.25% 0.188 281.6)
XYZ	xyz(7.8820, 3.9621, 31.3534)
Luminance	0.0396 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#371B9B #7F9B1B

analogous

#1B3F9B #371B9B #771B9B

triadic

#371B9B #9B371B #1B9B37

tetradic

#371B9B #9B1B3F #7F9B1B #1B9B77

square

#371B9B #9B1B3F #7F9B1B #1B9B77

split-complementary

#371B9B #9B771B #3F9B1B

monochromatic

#120933 #251267 #371B9B #4924CF #7050E0

Accessibility & contrast

On white

11.71

#371B9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#371B9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #371B9B

11.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##371B9B	#FFFFFF	#000000	##FFFFFF
##371B9B	1.00	11.71	1.79	11.71
#FFFFFF	11.71	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C9E

Deuteranopia (green-blind)

#003399

Tritanopia (blue-blind)

#00435C

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #371b9b;
/* rgb */ color: rgb(55, 27, 155);
/* oklch */ color: oklch(36.2% 0.188 281.6);

Tailwind

colors: {
  custom: {
    50: '#7c5dba',
    500: '#371b9b',
    950: '#000000',
  },
}

SCSS

$custom: #371b9b;
$custom-light: #7c5dba;
$custom-dark: #000000;

JSON

{
  "hex": "#371b9b",
  "rgb": {
    "r": 55,
    "g": 27,
    "b": 155
  },
  "hsl": {
    "h": 253.125,
    "s": 70.33,
    "l": 35.686
  },
  "oklch": {
    "l": 0.36247,
    "c": 0.18816,
    "h": 281.6
  },
  "luminance": 0.03963
}

Semantic roles & 50–950 ramp

primary

#371B9B

secondary

#AAC34F

accent

#ED3BC6

background

#F8F5FB

surface

#EFE9F6

border

#CAC5D0

text

#0B0412

muted

#7C7981

Preview Lab

Preview with #371B9B

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

Preview Lab → · Contrast checker → · Palette generator →