#573F9B#573F9B

#573F9B is a dark, vivid violet. Relative luminance 0.079; OKLCH L 44.4% C 0.144 H 291.5°. Best body text is #FFFFFF at 8.11:1 contrast (WCAG AA passes).

Color values

HEX	#573F9B
RGB	rgb(87, 63, 155)
HSL	hsl(256, 42%, 43%)
HSV	hsv(256, 59%, 61%)
CMYK	cmyk(43.9%, 59.4%, 0%, 39.2%)
CIE-LAB	lab(33.87, 33.21, -46.88)
CIE-LCH	lch(33.87, 57.45, 305.31°)
OKLab	oklab(44.39% 0.0525 -0.1336)
OKLCH	oklch(44.39% 0.144 291.5)
XYZ	xyz(11.6228, 7.9474, 31.9256)
Luminance	0.0795 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#573F9B #839B3F

analogous

#3F559B #573F9B #853F9B

triadic

#573F9B #9B573F #3F9B57

tetradic

#573F9B #9B3F55 #839B3F #3F9B85

square

#573F9B #9B3F55 #839B3F #3F9B85

split-complementary

#573F9B #9B853F #559B3F

monochromatic

#261C44 #3F2D6F #573F9B #745BBC #9986CE

Accessibility & contrast

On white

8.11

#573F9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.59

#573F9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #573F9B

8.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##573F9B	#FFFFFF	#000000	##FFFFFF
##573F9B	1.00	8.11	2.59	8.11
#FFFFFF	8.11	1.00	21.00	1.00
#000000	2.59	21.00	1.00	21.00
##FFFFFF	8.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00519E

Deuteranopia (green-blind)

#0A4E99

Tritanopia (blue-blind)

#445367

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #573f9b;
/* rgb */ color: rgb(87, 63, 155);
/* oklch */ color: oklch(44.4% 0.144 291.5);

Tailwind

colors: {
  custom: {
    50: '#8b75b9',
    500: '#573f9b',
    950: '#000000',
  },
}

SCSS

$custom: #573f9b;
$custom-light: #8b75b9;
$custom-dark: #000000;

JSON

{
  "hex": "#573f9b",
  "rgb": {
    "r": 87,
    "g": 63,
    "b": 155
  },
  "hsl": {
    "h": 255.652,
    "s": 42.202,
    "l": 42.745
  },
  "oklch": {
    "l": 0.44388,
    "c": 0.14356,
    "h": 291.5
  },
  "luminance": 0.07948
}

Semantic roles & 50–950 ramp

primary

#573F9B

secondary

#A9B87D

accent

#D256B2

background

#F8F7FB

surface

#F0EDF6

border

#CBC8D0

text

#0C0811

muted

#7D7B80

Preview Lab

Preview with #573F9B

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

Preview Lab → · Contrast checker → · Palette generator →