#641B78#641B78

#641B78 is a dark, vivid purple. Relative luminance 0.048; OKLCH L 38.5% C 0.156 H 317.9°. Best body text is #FFFFFF at 10.66:1 contrast (WCAG AA passes).

Color values

HEX	#641B78
RGB	rgb(100, 27, 120)
HSL	hsl(287, 63%, 29%)
HSV	hsv(287, 78%, 47%)
CMYK	cmyk(16.7%, 77.5%, 0%, 52.9%)
CIE-LAB	lab(26.30, 45.87, -37.29)
CIE-LCH	lch(26.30, 59.12, 320.89°)
OKLab	oklab(38.5% 0.1159 -0.1048)
OKLCH	oklch(38.5% 0.156 317.9)
XYZ	xyz(9.0371, 4.8497, 18.2257)
Luminance	0.0485 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#641B78 #2F781B

analogous

#361B78 #641B78 #781B5E

triadic

#641B78 #78641B #1B7864

tetradic

#641B78 #78361B #2F781B #1B5E78

square

#641B78 #78361B #2F781B #1B5E78

split-complementary

#641B78 #5E781B #1B7836

monochromatic

#150619 #3A1046 #641B78 #8E26AA #B23BD3

Accessibility & contrast

On white

10.66

#641B78 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#641B78 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #641B78

10.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##641B78	#FFFFFF	#000000	##FFFFFF
##641B78	1.00	10.66	1.97	10.66
#FFFFFF	10.66	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A7B

Deuteranopia (green-blind)

#1F4076

Tritanopia (blue-blind)

#632F48

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #641b78;
/* rgb */ color: rgb(100, 27, 120);
/* oklch */ color: oklch(38.5% 0.156 317.9);

Tailwind

colors: {
  custom: {
    50: '#94609f',
    500: '#641b78',
    950: '#000000',
  },
}

SCSS

$custom: #641b78;
$custom-light: #94609f;
$custom-dark: #000000;

JSON

{
  "hex": "#641b78",
  "rgb": {
    "r": 100,
    "g": 27,
    "b": 120
  },
  "hsl": {
    "h": 287.097,
    "s": 63.265,
    "l": 28.824
  },
  "oklch": {
    "l": 0.385,
    "c": 0.15628,
    "h": 317.9
  },
  "luminance": 0.04849
}

Semantic roles & 50–950 ramp

primary

#641B78

secondary

#59AC43

accent

#E64165

background

#F9F5F9

surface

#F2EAF2

border

#CCC6CC

text

#0D050F

muted

#7E797E

Preview Lab

Preview with #641B78

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

Preview Lab → · Contrast checker → · Palette generator →