#641B90#641B90

#641B90 is a dark, vivid violet. Relative luminance 0.055; OKLCH L 40.4% C 0.179 H 308.4°. Best body text is #FFFFFF at 9.99:1 contrast (WCAG AA passes).

Color values

HEX	#641B90
RGB	rgb(100, 27, 144)
HSL	hsl(277, 68%, 34%)
HSV	hsv(277, 81%, 56%)
CMYK	cmyk(30.6%, 81.3%, 0%, 43.5%)
CIE-LAB	lab(28.13, 51.05, -49.37)
CIE-LCH	lch(28.13, 71.02, 315.96°)
OKLab	oklab(40.37% 0.1113 -0.1403)
OKLCH	oklch(40.37% 0.179 308.4)
XYZ	xyz(10.6805, 5.5070, 26.8805)
Luminance	0.0551 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#641B90 #47901B

analogous

#291B90 #641B90 #901B81

triadic

#641B90 #90641B #1B9064

tetradic

#641B90 #90291B #47901B #1B8190

square

#641B90 #90291B #47901B #1B8190

split-complementary

#641B90 #81901B #1B9029

monochromatic

#1C0829 #40115C #641B90 #8825C4 #A549DD

Accessibility & contrast

On white

9.99

#641B90 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#641B90 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #641B90

9.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##641B90	#FFFFFF	#000000	##FFFFFF
##641B90	1.00	9.99	2.10	9.99
#FFFFFF	9.99	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	9.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004093

Deuteranopia (green-blind)

#00438E

Tritanopia (blue-blind)

#5D3956

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #641b90;
/* rgb */ color: rgb(100, 27, 144);
/* oklch */ color: oklch(40.4% 0.179 308.4);

Tailwind

colors: {
  custom: {
    50: '#9561b1',
    500: '#641b90',
    950: '#000000',
  },
}

SCSS

$custom: #641b90;
$custom-light: #9561b1;
$custom-dark: #000000;

JSON

{
  "hex": "#641b90",
  "rgb": {
    "r": 100,
    "g": 27,
    "b": 144
  },
  "hsl": {
    "h": 277.436,
    "s": 68.421,
    "l": 33.529
  },
  "oklch": {
    "l": 0.40365,
    "c": 0.1791,
    "h": 308.4
  },
  "luminance": 0.05507
}

Semantic roles & 50–950 ramp

primary

#641B90

secondary

#75BF48

accent

#EB3D7E

background

#F9F6FB

surface

#F2EBF6

border

#CCC6D0

text

#0E0511

muted

#7E7A80

Preview Lab

Preview with #641B90

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

Preview Lab → · Contrast checker → · Palette generator →