#641B81#641B81

#641B81 is a dark, vivid purple. Relative luminance 0.051; OKLCH L 39.2% C 0.165 H 314.0°. Best body text is #FFFFFF at 10.42:1 contrast (WCAG AA passes).

Color values

HEX	#641B81
RGB	rgb(100, 27, 129)
HSL	hsl(283, 65%, 31%)
HSV	hsv(283, 79%, 51%)
CMYK	cmyk(22.5%, 79.1%, 0%, 49.4%)
CIE-LAB	lab(26.96, 47.77, -41.93)
CIE-LCH	lch(26.96, 63.56, 318.73°)
OKLab	oklab(39.17% 0.1146 -0.1184)
OKLCH	oklch(39.17% 0.165 314)
XYZ	xyz(9.6092, 5.0785, 21.2387)
Luminance	0.0508 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#641B81 #38811B

analogous

#311B81 #641B81 #811B6B

triadic

#641B81 #81641B #1B8164

tetradic

#641B81 #81311B #38811B #1B6B81

square

#641B81 #81311B #38811B #1B6B81

split-complementary

#641B81 #6B811B #1B8131

monochromatic

#16061C #3D104E #641B81 #8B26B4 #AC3FD7

Accessibility & contrast

On white

10.42

#641B81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#641B81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #641B81

10.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##641B81	#FFFFFF	#000000	##FFFFFF
##641B81	1.00	10.42	2.02	10.42
#FFFFFF	10.42	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C84

Deuteranopia (green-blind)

#12417F

Tritanopia (blue-blind)

#61334D

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #641b81;
/* rgb */ color: rgb(100, 27, 129);
/* oklch */ color: oklch(39.2% 0.165 314.0);

Tailwind

colors: {
  custom: {
    50: '#9460a6',
    500: '#641b81',
    950: '#000000',
  },
}

SCSS

$custom: #641b81;
$custom-light: #9460a6;
$custom-dark: #000000;

JSON

{
  "hex": "#641b81",
  "rgb": {
    "r": 100,
    "g": 27,
    "b": 129
  },
  "hsl": {
    "h": 282.941,
    "s": 65.385,
    "l": 30.588
  },
  "oklch": {
    "l": 0.39171,
    "c": 0.16477,
    "h": 314
  },
  "luminance": 0.05078
}

Semantic roles & 50–950 ramp

primary

#641B81

secondary

#63B543

accent

#E83F6F

background

#F9F6FA

surface

#F2EBF4

border

#CCC6CE

text

#0E050F

muted

#7E7A7F

Preview Lab

Preview with #641B81

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

Preview Lab → · Contrast checker → · Palette generator →