#641B8E#641B8E

#641B8E is a dark, vivid violet. Relative luminance 0.054; OKLCH L 40.2% C 0.177 H 309.1°. Best body text is #FFFFFF at 10.05:1 contrast (WCAG AA passes).

Color values

HEX	#641B8E
RGB	rgb(100, 27, 142)
HSL	hsl(278, 68%, 33%)
HSV	hsv(278, 81%, 56%)
CMYK	cmyk(29.6%, 81%, 0%, 44.3%)
CIE-LAB	lab(27.97, 50.60, -48.40)
CIE-LCH	lch(27.97, 70.02, 316.28°)
OKLab	oklab(40.2% 0.1118 -0.1375)
OKLCH	oklch(40.2% 0.177 309.1)
XYZ	xyz(10.5289, 5.4464, 26.0825)
Luminance	0.0545 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#641B8E #458E1B

analogous

#2A1B8E #641B8E #8E1B7E

triadic

#641B8E #8E641B #1B8E64

tetradic

#641B8E #8E2A1B #458E1B #1B7E8E

square

#641B8E #8E2A1B #458E1B #1B7E8E

split-complementary

#641B8E #7E8E1B #1B8E2A

monochromatic

#1C0727 #40115B #641B8E #8825C1 #A647DC

Accessibility & contrast

On white

10.05

#641B8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#641B8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #641B8E

10.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##641B8E	#FFFFFF	#000000	##FFFFFF
##641B8E	1.00	10.05	2.09	10.05
#FFFFFF	10.05	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F91

Deuteranopia (green-blind)

#00438C

Tritanopia (blue-blind)

#5E3855

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #641b8e;
/* rgb */ color: rgb(100, 27, 142);
/* oklch */ color: oklch(40.2% 0.177 309.1);

Tailwind

colors: {
  custom: {
    50: '#9561b0',
    500: '#641b8e',
    950: '#000000',
  },
}

SCSS

$custom: #641b8e;
$custom-light: #9561b0;
$custom-dark: #000000;

JSON

{
  "hex": "#641b8e",
  "rgb": {
    "r": 100,
    "g": 27,
    "b": 142
  },
  "hsl": {
    "h": 278.087,
    "s": 68.047,
    "l": 33.137
  },
  "oklch": {
    "l": 0.40201,
    "c": 0.17718,
    "h": 309.1
  },
  "luminance": 0.05446
}

Semantic roles & 50–950 ramp

primary

#641B8E

secondary

#72BE47

accent

#EB3D7C

background

#F9F6FA

surface

#F2EBF5

border

#CCC6CF

text

#0E0511

muted

#7E7A80

Preview Lab

Preview with #641B8E

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

Preview Lab → · Contrast checker → · Palette generator →