#644CFF#644CFF

#644CFF is a mid, highly saturated blue. Relative luminance 0.151; OKLCH L 55.8% C 0.250 H 280.6°. Best body text is #FFFFFF at 5.22:1 contrast (WCAG AA passes).

Color values

HEX	#644CFF
RGB	rgb(100, 76, 255)
HSL	hsl(248, 100%, 65%)
HSV	hsv(248, 70%, 100%)
CMYK	cmyk(60.8%, 70.2%, 0%, 0%)
CIE-LAB	lab(45.77, 57.86, -85.38)
CIE-LCH	lch(45.77, 103.14, 304.13°)
OKLab	oklab(55.75% 0.0461 -0.2462)
OKLCH	oklch(55.75% 0.25 280.6)
XYZ	xyz(25.8843, 15.0963, 96.1382)
Luminance	0.1510 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#644CFF #E7FF4C

analogous

#4C8DFF #644CFF #BE4CFF

triadic

#644CFF #FF644C #4CFF64

tetradic

#644CFF #FF4C8D #E7FF4C #4CFFBE

square

#644CFF #FF4C8D #E7FF4C #4CFFBE

split-complementary

#644CFF #FFBE4C #8DFF4C

monochromatic

#1C00D1 #2F0FFF #644CFF #9989FF #CEC6FF

Accessibility & contrast

On white

5.22

#644CFF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.02

#644CFF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #644CFF

5.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##644CFF	#FFFFFF	#000000	##FFFFFF
##644CFF	1.00	5.22	4.02	5.22
#FFFFFF	5.22	1.00	21.00	1.00
#000000	4.02	21.00	1.00	21.00
##FFFFFF	5.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0073FF

Deuteranopia (green-blind)

#0066FC

Tritanopia (blue-blind)

#007DA1

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #644cff;
/* rgb */ color: rgb(100, 76, 255);
/* oklch */ color: oklch(55.8% 0.250 280.6);

Tailwind

colors: {
  custom: {
    50: '#a081ff',
    500: '#644cff',
    950: '#000000',
  },
}

SCSS

$custom: #644cff;
$custom-light: #a081ff;
$custom-dark: #000000;

JSON

{
  "hex": "#644cff",
  "rgb": {
    "r": 100,
    "g": 76,
    "b": 255
  },
  "hsl": {
    "h": 248.045,
    "s": 100,
    "l": 64.902
  },
  "oklch": {
    "l": 0.5575,
    "c": 0.25048,
    "h": 280.6
  },
  "luminance": 0.15098
}

Semantic roles & 50–950 ramp

primary

#644CFF

secondary

#EAF2B5

accent

#E600C7

background

#FAF8FF

surface

#F4EFFF

border

#CECAD7

text

#100A18

muted

#7F7C86

Preview Lab

Preview with #644CFF

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

Preview Lab → · Contrast checker → · Palette generator →