#370F5B#370F5B

#370F5B is a dark, vivid violet. Relative luminance 0.019; OKLCH L 28.3% C 0.126 H 302.7°. Best body text is #FFFFFF at 15.20:1 contrast (WCAG AA passes).

Color values

HEX	#370F5B
RGB	rgb(55, 15, 91)
HSL	hsl(272, 72%, 21%)
HSV	hsv(272, 84%, 36%)
CMYK	cmyk(39.6%, 83.5%, 0%, 64.3%)
CIE-LAB	lab(15.00, 34.81, -37.00)
CIE-LCH	lch(15.00, 50.80, 313.25°)
OKLab	oklab(28.31% 0.0679 -0.1056)
OKLCH	oklch(28.31% 0.126 302.7)
XYZ	xyz(3.6342, 1.9092, 10.0725)
Luminance	0.0191 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Dark Indigo

#1F0954

ΔE00 4.43

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#370F5B #335B0F

analogous

#110F5B #370F5B #5B0F59

triadic

#370F5B #5B370F #0F5B37

tetradic

#370F5B #5B110F #335B0F #0F595B

square

#370F5B #5B110F #335B0F #0F595B

split-complementary

#370F5B #595B0F #0F5B11

monochromatic

#10041A #170626 #370F5B #571890 #7720C4

Accessibility & contrast

On white

15.20

#370F5B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.38

#370F5B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #370F5B

15.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##370F5B	#FFFFFF	#000000	##FFFFFF
##370F5B	1.00	15.20	1.38	15.20
#FFFFFF	15.20	1.00	21.00	1.00
#000000	1.38	21.00	1.00	21.00
##FFFFFF	15.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00255D

Deuteranopia (green-blind)

#00255A

Tritanopia (blue-blind)

#2F2335

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #370f5b;
/* rgb */ color: rgb(55, 15, 91);
/* oklch */ color: oklch(28.3% 0.126 302.7);

Tailwind

colors: {
  custom: {
    50: '#72538a',
    500: '#370f5b',
    950: '#000000',
  },
}

SCSS

$custom: #370f5b;
$custom-light: #72538a;
$custom-dark: #000000;

JSON

{
  "hex": "#370f5b",
  "rgb": {
    "r": 55,
    "g": 15,
    "b": 91
  },
  "hsl": {
    "h": 271.579,
    "s": 71.698,
    "l": 20.784
  },
  "oklch": {
    "l": 0.28308,
    "c": 0.12552,
    "h": 302.7
  },
  "luminance": 0.01909
}

Semantic roles & 50–950 ramp

primary

#370F5B

secondary

#609531

accent

#EE398F

background

#F7F4F8

surface

#EDE7F0

border

#C8C3CB

text

#08020C

muted

#7B787D

Preview Lab

Preview with #370F5B

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

Preview Lab → · Contrast checker → · Palette generator →