#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
RGBrgb(100, 27, 144)
HSLhsl(277, 68%, 34%)
HSVhsv(277, 81%, 56%)
CMYKcmyk(30.6%, 81.3%, 0%, 43.5%)
CIE-LABlab(28.13, 51.05, -49.37)
CIE-LCHlch(28.13, 71.02, 315.96°)
OKLaboklab(40.37% 0.1113 -0.1403)
OKLCHoklch(40.37% 0.179 308.4)
XYZxyz(10.6805, 5.5070, 26.8805)
Luminance0.0551 (WCAG relative)
Temperaturecool
Familyviolet

Closest named colors

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
##641B901.009.992.109.99
#FFFFFF9.991.0021.001.00
#0000002.1021.001.0021.00
##FFFFFF9.991.0021.001.00

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 →

#641B90 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva