#644EFB#644EFB

#644EFB is a mid, highly saturated blue. Relative luminance 0.151; OKLCH L 55.7% C 0.244 H 280.7°. Best body text is #FFFFFF at 5.22:1 contrast (WCAG AA passes).

Color values

HEX	#644EFB
RGB	rgb(100, 78, 251)
HSL	hsl(248, 96%, 65%)
HSV	hsv(248, 69%, 98%)
CMYK	cmyk(60.2%, 68.9%, 0%, 1.6%)
CIE-LAB	lab(45.80, 55.63, -83.09)
CIE-LCH	lch(45.80, 99.99, 303.80°)
OKLab	oklab(55.67% 0.0453 -0.2395)
OKLCH	oklch(55.67% 0.244 280.7)
XYZ	xyz(25.3870, 15.1213, 92.8290)
Luminance	0.1512 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#644EFB #E5FB4E

analogous

#4E8FFB #644EFB #BB4EFB

triadic

#644EFB #FB644E #4EFB64

tetradic

#644EFB #FB4E8F #E5FB4E #4EFBBB

square

#644EFB #FB4E8F #E5FB4E #4EFBBB

split-complementary

#644EFB #FBBB4E #8FFB4E

monochromatic

#1E05CA #3012FA #644EFB #988AFC #CDC6FE

Accessibility & contrast

On white

5.22

#644EFB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.02

#644EFB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #644EFB

5.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##644EFB	#FFFFFF	#000000	##FFFFFF
##644EFB	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)

#0066F8

Tritanopia (blue-blind)

#007C9F

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #644efb;
/* rgb */ color: rgb(100, 78, 251);
/* oklch */ color: oklch(55.7% 0.244 280.7);

Tailwind

colors: {
  custom: {
    50: '#a082fe',
    500: '#644efb',
    950: '#000000',
  },
}

SCSS

$custom: #644efb;
$custom-light: #a082fe;
$custom-dark: #000000;

JSON

{
  "hex": "#644efb",
  "rgb": {
    "r": 100,
    "g": 78,
    "b": 251
  },
  "hsl": {
    "h": 247.63,
    "s": 95.58,
    "l": 64.51
  },
  "oklch": {
    "l": 0.55668,
    "c": 0.24378,
    "h": 280.7
  },
  "luminance": 0.15123
}

Semantic roles & 50–950 ramp

primary

#644EFB

secondary

#E9F0B5

accent

#E600C8

background

#FAF8FF

surface

#F4EFFF

border

#CECAD7

text

#100B18

muted

#7F7C86

Preview Lab

Preview with #644EFB

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

Preview Lab → · Contrast checker → · Palette generator →