#644EB5#644EB5

#644EB5 is a mid, vivid violet. Relative luminance 0.115; OKLCH L 50.1% C 0.156 H 289.3°. Best body text is #FFFFFF at 6.37:1 contrast (WCAG AA passes).

Color values

HEX	#644EB5
RGB	rgb(100, 78, 181)
HSL	hsl(253, 41%, 51%)
HSV	hsv(253, 57%, 71%)
CMYK	cmyk(44.8%, 56.9%, 0%, 29%)
CIE-LAB	lab(40.40, 34.79, -51.81)
CIE-LCH	lch(40.40, 62.41, 303.88°)
OKLab	oklab(50.07% 0.0518 -0.1476)
OKLCH	oklch(50.07% 0.156 289.3)
XYZ	xyz(16.3181, 11.4937, 45.0658)
Luminance	0.1149 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#644EB5 #9FB54E

analogous

#4E6BB5 #644EB5 #984EB5

triadic

#644EB5 #B5644E #4EB564

tetradic

#644EB5 #B54E6B #9FB54E #4EB598

square

#644EB5 #B54E6B #9FB54E #4EB598

split-complementary

#644EB5 #B5984E #6BB54E

monochromatic

#342860 #4C3A8B #644EB5 #8A79C7 #B0A4D9

Accessibility & contrast

On white

6.37

#644EB5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.30

#644EB5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #644EB5

6.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##644EB5	#FFFFFF	#000000	##FFFFFF
##644EB5	1.00	6.37	3.30	6.37
#FFFFFF	6.37	1.00	21.00	1.00
#000000	3.30	21.00	1.00	21.00
##FFFFFF	6.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F61B8

Deuteranopia (green-blind)

#145DB3

Tritanopia (blue-blind)

#4C657A

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #644eb5;
/* rgb */ color: rgb(100, 78, 181);
/* oklch */ color: oklch(50.1% 0.156 289.3);

Tailwind

colors: {
  custom: {
    50: '#9680cc',
    500: '#644eb5',
    950: '#000000',
  },
}

SCSS

$custom: #644eb5;
$custom-light: #9680cc;
$custom-dark: #000000;

JSON

{
  "hex": "#644eb5",
  "rgb": {
    "r": 100,
    "g": 78,
    "b": 181
  },
  "hsl": {
    "h": 252.816,
    "s": 41.036,
    "l": 50.784
  },
  "oklch": {
    "l": 0.50065,
    "c": 0.15648,
    "h": 289.3
  },
  "luminance": 0.11494
}

Semantic roles & 50–950 ramp

primary

#644EB5

secondary

#BCC699

accent

#D157B7

background

#F9F7FC

surface

#F2EEF9

border

#CCC9D2

text

#0E0A13

muted

#7E7C82

Preview Lab

Preview with #644EB5

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

Preview Lab → · Contrast checker → · Palette generator →