#642F91#642F91

#642F91 is a dark, vivid violet. Relative luminance 0.068; OKLCH L 42.6% C 0.156 H 305.6°. Best body text is #FFFFFF at 8.91:1 contrast (WCAG AA passes).

Color values

HEX	#642F91
RGB	rgb(100, 47, 145)
HSL	hsl(272, 51%, 38%)
HSV	hsv(272, 68%, 57%)
CMYK	cmyk(31%, 67.6%, 0%, 43.1%)
CIE-LAB	lab(31.32, 42.50, -44.83)
CIE-LCH	lch(31.32, 61.77, 313.47°)
OKLab	oklab(42.65% 0.0909 -0.1271)
OKLCH	oklch(42.65% 0.156 305.6)
XYZ	xyz(11.3818, 6.7868, 27.4929)
Luminance	0.0679 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#642F91 #5C912F

analogous

#332F91 #642F91 #912F8D

triadic

#642F91 #91642F #2F9164

tetradic

#642F91 #91332F #5C912F #2F8D91

square

#642F91 #91332F #5C912F #2F8D91

split-complementary

#642F91 #8D912F #2F9133

monochromatic

#241135 #442063 #642F91 #843EBF #A16BCF

Accessibility & contrast

On white

8.91

#642F91 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#642F91 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #642F91

8.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##642F91	#FFFFFF	#000000	##FFFFFF
##642F91	1.00	8.91	2.36	8.91
#FFFFFF	8.91	1.00	21.00	1.00
#000000	2.36	21.00	1.00	21.00
##FFFFFF	8.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004894

Deuteranopia (green-blind)

#134A8F

Tritanopia (blue-blind)

#5C445C

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #642f91;
/* rgb */ color: rgb(100, 47, 145);
/* oklch */ color: oklch(42.6% 0.156 305.6);

Tailwind

colors: {
  custom: {
    50: '#946bb2',
    500: '#642f91',
    950: '#000000',
  },
}

SCSS

$custom: #642f91;
$custom-light: #946bb2;
$custom-dark: #000000;

JSON

{
  "hex": "#642f91",
  "rgb": {
    "r": 100,
    "g": 47,
    "b": 145
  },
  "hsl": {
    "h": 272.449,
    "s": 51.042,
    "l": 37.647
  },
  "oklch": {
    "l": 0.42647,
    "c": 0.15624,
    "h": 305.6
  },
  "luminance": 0.06787
}

Semantic roles & 50–950 ramp

primary

#642F91

secondary

#8BB665

accent

#DB4D8E

background

#F9F6FB

surface

#F2EBF6

border

#CCC6D0

text

#0E0711

muted

#7E7A80

Preview Lab

Preview with #642F91

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

Preview Lab → · Contrast checker → · Palette generator →