#642F81#642F81

#642F81 is a dark, vivid violet. Relative luminance 0.063; OKLCH L 41.5% C 0.138 H 311.7°. Best body text is #FFFFFF at 9.27:1 contrast (WCAG AA passes).

Color values

HEX	#642F81
RGB	rgb(100, 47, 129)
HSL	hsl(279, 47%, 35%)
HSV	hsv(279, 64%, 51%)
CMYK	cmyk(22.5%, 63.6%, 0%, 49.4%)
CIE-LAB	lab(30.22, 38.63, -36.67)
CIE-LCH	lch(30.22, 53.26, 316.49°)
OKLab	oklab(41.51% 0.0918 -0.1032)
OKLCH	oklch(41.51% 0.138 311.7)
XYZ	xyz(10.2338, 6.3276, 21.4469)
Luminance	0.0633 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#642F81 #4C812F

analogous

#3B2F81 #642F81 #812F75

triadic

#642F81 #81642F #2F8164

tetradic

#642F81 #813B2F #4C812F #2F7581

square

#642F81 #813B2F #4C812F #2F7581

split-complementary

#642F81 #75812F #2F813B

monochromatic

#1E0E27 #411F54 #642F81 #873FAE #A464C6

Accessibility & contrast

On white

9.27

#642F81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.27

#642F81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #642F81

9.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##642F81	#FFFFFF	#000000	##FFFFFF
##642F81	1.00	9.27	2.27	9.27
#FFFFFF	9.27	1.00	21.00	1.00
#000000	2.27	21.00	1.00	21.00
##FFFFFF	9.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E4584

Deuteranopia (green-blind)

#28487F

Tritanopia (blue-blind)

#613E53

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #642f81;
/* rgb */ color: rgb(100, 47, 129);
/* oklch */ color: oklch(41.5% 0.138 311.7);

Tailwind

colors: {
  custom: {
    50: '#936ba6',
    500: '#642f81',
    950: '#000000',
  },
}

SCSS

$custom: #642f81;
$custom-light: #936ba6;
$custom-dark: #000000;

JSON

{
  "hex": "#642f81",
  "rgb": {
    "r": 100,
    "g": 47,
    "b": 129
  },
  "hsl": {
    "h": 278.78,
    "s": 46.591,
    "l": 34.51
  },
  "oklch": {
    "l": 0.41509,
    "c": 0.13808,
    "h": 311.7
  },
  "luminance": 0.06327
}

Semantic roles & 50–950 ramp

primary

#642F81

secondary

#7AAD5E

accent

#D65280

background

#F9F6FA

surface

#F2EBF4

border

#CCC6CE

text

#0D070F

muted

#7E7A7F

Preview Lab

Preview with #642F81

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

Preview Lab → · Contrast checker → · Palette generator →