#371D7B#371D7B

#371D7B is a dark, vivid violet. Relative luminance 0.031; OKLCH L 33.1% C 0.148 H 288.1°. Best body text is #FFFFFF at 12.93:1 contrast (WCAG AA passes).

Color values

HEX	#371D7B
RGB	rgb(55, 29, 123)
HSL	hsl(257, 62%, 30%)
HSV	hsv(257, 76%, 48%)
CMYK	cmyk(55.3%, 76.4%, 0%, 51.8%)
CIE-LAB	lab(20.52, 37.01, -48.88)
CIE-LCH	lch(20.52, 61.31, 307.14°)
OKLab	oklab(33.13% 0.0461 -0.1405)
OKLCH	oklch(33.13% 0.148 288.1)
XYZ	xyz(5.5890, 3.1207, 19.0429)
Luminance	0.0312 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#371D7B #617B1D

analogous

#1D327B #371D7B #661D7B

triadic

#371D7B #7B371D #1D7B37

tetradic

#371D7B #7B1D32 #617B1D #1D7B66

square

#371D7B #7B1D32 #617B1D #1D7B66

split-complementary

#371D7B #7B661D #327B1D

monochromatic

#0B0619 #211149 #371D7B #4D29AD #6940D2

Accessibility & contrast

On white

12.93

#371D7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.62

#371D7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #371D7B

12.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##371D7B	#FFFFFF	#000000	##FFFFFF
##371D7B	1.00	12.93	1.62	12.93
#FFFFFF	12.93	1.00	21.00	1.00
#000000	1.62	21.00	1.00	21.00
##FFFFFF	12.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00337E

Deuteranopia (green-blind)

#002F79

Tritanopia (blue-blind)

#1C374A

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #371d7b;
/* rgb */ color: rgb(55, 29, 123);
/* oklch */ color: oklch(33.1% 0.148 288.1);

Tailwind

colors: {
  custom: {
    50: '#765ca2',
    500: '#371d7b',
    950: '#000000',
  },
}

SCSS

$custom: #371d7b;
$custom-light: #765ca2;
$custom-dark: #000000;

JSON

{
  "hex": "#371d7b",
  "rgb": {
    "r": 55,
    "g": 29,
    "b": 123
  },
  "hsl": {
    "h": 256.596,
    "s": 61.842,
    "l": 29.804
  },
  "oklch": {
    "l": 0.33129,
    "c": 0.14789,
    "h": 288.1
  },
  "luminance": 0.03121
}

Semantic roles & 50–950 ramp

primary

#371D7B

secondary

#91AF45

accent

#E543B8

background

#F7F5FA

surface

#EEE9F4

border

#C9C5CE

text

#09040F

muted

#7B797F

Preview Lab

Preview with #371D7B

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

Preview Lab → · Contrast checker → · Palette generator →