#571B81#571B81

#571B81 is a dark, vivid violet. Relative luminance 0.044; OKLCH L 37.3% C 0.161 H 306.7°. Best body text is #FFFFFF at 11.18:1 contrast (WCAG AA passes).

Color values

HEX	#571B81
RGB	rgb(87, 27, 129)
HSL	hsl(275, 65%, 31%)
HSV	hsv(275, 79%, 51%)
CMYK	cmyk(32.6%, 79.1%, 0%, 49.4%)
CIE-LAB	lab(24.94, 45.23, -45.30)
CIE-LCH	lch(24.94, 64.01, 314.96°)
OKLab	oklab(37.33% 0.0961 -0.1288)
OKLCH	oklch(37.33% 0.161 306.7)
XYZ	xyz(8.2840, 4.3952, 21.1766)
Luminance	0.0440 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Indigo

#4B0082

ΔE00 4.11

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#571B81 #45811B

analogous

#241B81 #571B81 #811B78

triadic

#571B81 #81571B #1B8157

tetradic

#571B81 #81241B #45811B #1B7881

square

#571B81 #81241B #45811B #1B7881

split-complementary

#571B81 #78811B #1B8124

monochromatic

#13061C #35104E #571B81 #7926B4 #993FD7

Accessibility & contrast

On white

11.18

#571B81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#571B81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #571B81

11.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##571B81	#FFFFFF	#000000	##FFFFFF
##571B81	1.00	11.18	1.88	11.18
#FFFFFF	11.18	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003984

Deuteranopia (green-blind)

#003C7F

Tritanopia (blue-blind)

#50354D

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #571b81;
/* rgb */ color: rgb(87, 27, 129);
/* oklch */ color: oklch(37.3% 0.161 306.7);

Tailwind

colors: {
  custom: {
    50: '#8b5fa6',
    500: '#571b81',
    950: '#000000',
  },
}

SCSS

$custom: #571b81;
$custom-light: #8b5fa6;
$custom-dark: #000000;

JSON

{
  "hex": "#571b81",
  "rgb": {
    "r": 87,
    "g": 27,
    "b": 129
  },
  "hsl": {
    "h": 275.294,
    "s": 65.385,
    "l": 30.588
  },
  "oklch": {
    "l": 0.37333,
    "c": 0.16073,
    "h": 306.7
  },
  "luminance": 0.04395
}

Semantic roles & 50–950 ramp

primary

#571B81

secondary

#72B543

accent

#E83F85

background

#F8F5FA

surface

#F0EAF4

border

#CBC6CE

text

#0C050F

muted

#7D797F

Preview Lab

Preview with #571B81

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

Preview Lab → · Contrast checker → · Palette generator →