#371BB4#371BB4

#371BB4 is a dark, highly saturated violet. Relative luminance 0.049; OKLCH L 39.1% C 0.216 H 277.8°. Best body text is #FFFFFF at 10.62:1 contrast (WCAG AA passes).

Color values

HEX	#371BB4
RGB	rgb(55, 27, 180)
HSL	hsl(251, 74%, 41%)
HSV	hsv(251, 85%, 71%)
CMYK	cmyk(69.4%, 85%, 0%, 29.4%)
CIE-LAB	lab(26.42, 54.78, -74.25)
CIE-LCH	lch(26.42, 92.27, 306.42°)
OKLab	oklab(39.06% 0.0294 -0.2144)
OKLCH	oklch(39.06% 0.216 277.8)
XYZ	xyz(10.2030, 4.8905, 43.5774)
Luminance	0.0489 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#371BB4 #98B41B

analogous

#1B4CB4 #371BB4 #831BB4

triadic

#371BB4 #B4371B #1BB437

tetradic

#371BB4 #B41B4C #98B41B #1BB483

square

#371BB4 #B41B4C #98B41B #1BB483

split-complementary

#371BB4 #B4831B #4CB41B

monochromatic

#160B4A #27137F #371BB4 #4D2DDF #7A62E7

Accessibility & contrast

On white

10.62

#371BB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.98

#371BB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #371BB4

10.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##371BB4	#FFFFFF	#000000	##FFFFFF
##371BB4	1.00	10.62	1.98	10.62
#FFFFFF	10.62	1.00	21.00	1.00
#000000	1.98	21.00	1.00	21.00
##FFFFFF	10.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0044B8

Deuteranopia (green-blind)

#0038B1

Tritanopia (blue-blind)

#004D6B

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #371bb4;
/* rgb */ color: rgb(55, 27, 180);
/* oklch */ color: oklch(39.1% 0.216 277.8);

Tailwind

colors: {
  custom: {
    50: '#815fcc',
    500: '#371bb4',
    950: '#000000',
  },
}

SCSS

$custom: #371bb4;
$custom-light: #815fcc;
$custom-dark: #000000;

JSON

{
  "hex": "#371bb4",
  "rgb": {
    "r": 55,
    "g": 27,
    "b": 180
  },
  "hsl": {
    "h": 250.98,
    "s": 73.913,
    "l": 40.588
  },
  "oklch": {
    "l": 0.3906,
    "c": 0.21646,
    "h": 277.8
  },
  "luminance": 0.04891
}

Semantic roles & 50–950 ramp

primary

#371BB4

secondary

#B8CC5F

accent

#F137CF

background

#F8F5FC

surface

#F0EAF9

border

#CBC6D2

text

#0C0514

muted

#7D7982

Preview Lab

Preview with #371BB4

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

Preview Lab → · Contrast checker → · Palette generator →