#370F57#370F57

#370F57 is a dark, vivid violet. Relative luminance 0.018; OKLCH L 27.9% C 0.121 H 304.8°. Best body text is #FFFFFF at 15.35:1 contrast (WCAG AA passes).

Color values

HEX	#370F57
RGB	rgb(55, 15, 87)
HSL	hsl(273, 71%, 20%)
HSV	hsv(273, 83%, 34%)
CMYK	cmyk(36.8%, 82.8%, 0%, 65.9%)
CIE-LAB	lab(14.64, 33.76, -34.90)
CIE-LCH	lch(14.64, 48.56, 314.05°)
OKLab	oklab(27.94% 0.069 -0.0994)
OKLCH	oklch(27.94% 0.121 304.8)
XYZ	xyz(3.4663, 1.8420, 9.1879)
Luminance	0.0184 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Dark Indigo

#1F0954

ΔE00 4.69

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#370F57 #2F570F

analogous

#130F57 #370F57 #570F53

triadic

#370F57 #57370F #0F5737

tetradic

#370F57 #57130F #2F570F #0F5357

square

#370F57 #57130F #2F570F #0F5357

split-complementary

#370F57 #53570F #0F5713

monochromatic

#10051A #160623 #370F57 #58188B #7921BF

Accessibility & contrast

On white

15.35

#370F57 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.37

#370F57 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #370F57

15.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##370F57	#FFFFFF	#000000	##FFFFFF
##370F57	1.00	15.35	1.37	15.35
#FFFFFF	15.35	1.00	21.00	1.00
#000000	1.37	21.00	1.00	21.00
##FFFFFF	15.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002459

Deuteranopia (green-blind)

#002556

Tritanopia (blue-blind)

#312132

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #370f57;
/* rgb */ color: rgb(55, 15, 87);
/* oklch */ color: oklch(27.9% 0.121 304.8);

Tailwind

colors: {
  custom: {
    50: '#725287',
    500: '#370f57',
    950: '#000000',
  },
}

SCSS

$custom: #370f57;
$custom-light: #725287;
$custom-dark: #000000;

JSON

{
  "hex": "#370f57",
  "rgb": {
    "r": 55,
    "g": 15,
    "b": 87
  },
  "hsl": {
    "h": 273.333,
    "s": 70.588,
    "l": 20
  },
  "oklch": {
    "l": 0.27936,
    "c": 0.12104,
    "h": 304.8
  },
  "luminance": 0.01842
}

Semantic roles & 50–950 ramp

primary

#370F57

secondary

#5C9131

accent

#ED3A8A

background

#F7F4F8

surface

#EDE7EF

border

#C8C3CA

text

#08020B

muted

#7B787C

Preview Lab

Preview with #370F57

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

Preview Lab → · Contrast checker → · Palette generator →