#371CB3#371CB3

#371CB3 is a dark, highly saturated violet. Relative luminance 0.049; OKLCH L 39.0% C 0.215 H 277.9°. Best body text is #FFFFFF at 10.61:1 contrast (WCAG AA passes).

Color values

HEX	#371CB3
RGB	rgb(55, 28, 179)
HSL	hsl(251, 73%, 41%)
HSV	hsv(251, 84%, 70%)
CMYK	cmyk(69.3%, 84.4%, 0%, 29.8%)
CIE-LAB	lab(26.44, 54.10, -73.62)
CIE-LCH	lch(26.44, 91.36, 306.31°)
OKLab	oklab(39.04% 0.0294 -0.2126)
OKLCH	oklch(39.04% 0.215 277.9)
XYZ	xyz(10.1249, 4.8965, 43.0506)
Luminance	0.0490 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#371CB3 #98B31C

analogous

#1C4DB3 #371CB3 #821CB3

triadic

#371CB3 #B3371C #1CB337

tetradic

#371CB3 #B31C4D #98B31C #1CB382

square

#371CB3 #B31C4D #98B31C #1CB382

split-complementary

#371CB3 #B3821C #4DB31C

monochromatic

#160B49 #27147E #371CB3 #4D2EDE #7A63E7

Accessibility & contrast

On white

10.61

#371CB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.98

#371CB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #371CB3

10.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##371CB3	#FFFFFF	#000000	##FFFFFF
##371CB3	1.00	10.61	1.98	10.61
#FFFFFF	10.61	1.00	21.00	1.00
#000000	1.98	21.00	1.00	21.00
##FFFFFF	10.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0044B7

Deuteranopia (green-blind)

#0038B0

Tritanopia (blue-blind)

#004D6A

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #371cb3;
/* rgb */ color: rgb(55, 28, 179);
/* oklch */ color: oklch(39.0% 0.215 277.9);

Tailwind

colors: {
  custom: {
    50: '#815fcb',
    500: '#371cb3',
    950: '#000000',
  },
}

SCSS

$custom: #371cb3;
$custom-light: #815fcb;
$custom-dark: #000000;

JSON

{
  "hex": "#371cb3",
  "rgb": {
    "r": 55,
    "g": 28,
    "b": 179
  },
  "hsl": {
    "h": 250.728,
    "s": 72.947,
    "l": 40.588
  },
  "oklch": {
    "l": 0.39038,
    "c": 0.21467,
    "h": 277.9
  },
  "luminance": 0.04897
}

Semantic roles & 50–950 ramp

primary

#371CB3

secondary

#B8CB5F

accent

#F038CF

background

#F8F5FC

surface

#F0EAF9

border

#CBC6D2

text

#0C0514

muted

#7D7982

Preview Lab

Preview with #371CB3

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

Preview Lab → · Contrast checker → · Palette generator →