#371F9B#371F9B

#371F9B is a dark, vivid violet. Relative luminance 0.042; OKLCH L 36.7% C 0.185 H 281.1°. Best body text is #FFFFFF at 11.46:1 contrast (WCAG AA passes).

Color values

HEX	#371F9B
RGB	rgb(55, 31, 155)
HSL	hsl(252, 67%, 36%)
HSV	hsv(252, 80%, 61%)
CMYK	cmyk(64.5%, 80%, 0%, 39.2%)
CIE-LAB	lab(24.19, 45.72, -62.83)
CIE-LCH	lch(24.19, 77.70, 306.04°)
OKLab	oklab(36.69% 0.0356 -0.1813)
OKLCH	oklch(36.69% 0.185 281.1)
XYZ	xyz(7.9801, 4.1581, 31.3861)
Luminance	0.0416 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#371F9B #839B1F

analogous

#1F459B #371F9B #751F9B

triadic

#371F9B #9B371F #1F9B37

tetradic

#371F9B #9B1F45 #839B1F #1F9B75

square

#371F9B #9B1F45 #839B1F #1F9B75

split-complementary

#371F9B #9B751F #459B1F

monochromatic

#130B35 #251568 #371F9B #4929CE #7157DD

Accessibility & contrast

On white

11.46

#371F9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#371F9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #371F9B

11.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##371F9B	#FFFFFF	#000000	##FFFFFF
##371F9B	1.00	11.46	1.83	11.46
#FFFFFF	11.46	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E9E

Deuteranopia (green-blind)

#003599

Tritanopia (blue-blind)

#00445D

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #371f9b;
/* rgb */ color: rgb(55, 31, 155);
/* oklch */ color: oklch(36.7% 0.185 281.1);

Tailwind

colors: {
  custom: {
    50: '#7c5fba',
    500: '#371f9b',
    950: '#000000',
  },
}

SCSS

$custom: #371f9b;
$custom-light: #7c5fba;
$custom-dark: #000000;

JSON

{
  "hex": "#371f9b",
  "rgb": {
    "r": 55,
    "g": 31,
    "b": 155
  },
  "hsl": {
    "h": 251.613,
    "s": 66.667,
    "l": 36.471
  },
  "oklch": {
    "l": 0.36692,
    "c": 0.18475,
    "h": 281.1
  },
  "luminance": 0.04159
}

Semantic roles & 50–950 ramp

primary

#371F9B

secondary

#ACC155

accent

#EA3EC8

background

#F8F5FB

surface

#EFE9F6

border

#CAC5D0

text

#0B0512

muted

#7C7981

Preview Lab

Preview with #371F9B

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

Preview Lab → · Contrast checker → · Palette generator →