#644FDB#644FDB

#644FDB is a mid, highly saturated blue. Relative luminance 0.134; OKLCH L 53.1% C 0.204 H 283.8°. Best body text is #FFFFFF at 5.70:1 contrast (WCAG AA passes).

Color values

HEX	#644FDB
RGB	rgb(100, 79, 219)
HSL	hsl(249, 66%, 58%)
HSV	hsv(249, 64%, 86%)
CMYK	cmyk(54.3%, 63.9%, 0%, 14.1%)
CIE-LAB	lab(43.38, 45.52, -68.99)
CIE-LCH	lch(43.38, 82.65, 303.42°)
OKLab	oklab(53.12% 0.0488 -0.1982)
OKLCH	oklch(53.12% 0.204 283.8)
XYZ	xyz(20.8338, 13.4145, 68.4956)
Luminance	0.1342 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#644FDB #C6DB4F

analogous

#4F80DB #644FDB #AA4FDB

triadic

#644FDB #DB644F #4FDB64

tetradic

#644FDB #DB4F80 #C6DB4F #4FDBAA

square

#644FDB #DB4F80 #C6DB4F #4FDBAA

split-complementary

#644FDB #DBAA4F #80DB4F

monochromatic

#2F1E92 #4028C5 #644FDB #9182E5 #BDB5F0

Accessibility & contrast

On white

5.70

#644FDB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.68

#644FDB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #644FDB

5.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##644FDB	#FFFFFF	#000000	##FFFFFF
##644FDB	1.00	5.70	3.68	5.70
#FFFFFF	5.70	1.00	21.00	1.00
#000000	3.68	21.00	1.00	21.00
##FFFFFF	5.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006BDF

Deuteranopia (green-blind)

#0062D8

Tritanopia (blue-blind)

#2E728E

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #644fdb;
/* rgb */ color: rgb(100, 79, 219);
/* oklch */ color: oklch(53.1% 0.204 283.8);

Tailwind

colors: {
  custom: {
    50: '#9b82e7',
    500: '#644fdb',
    950: '#000000',
  },
}

SCSS

$custom: #644fdb;
$custom-light: #9b82e7;
$custom-dark: #000000;

JSON

{
  "hex": "#644fdb",
  "rgb": {
    "r": 100,
    "g": 79,
    "b": 219
  },
  "hsl": {
    "h": 249,
    "s": 66.038,
    "l": 58.431
  },
  "oklch": {
    "l": 0.53117,
    "c": 0.20409,
    "h": 283.8
  },
  "luminance": 0.13416
}

Semantic roles & 50–950 ramp

primary

#644FDB

secondary

#D6DFA7

accent

#E93FCF

background

#FAF8FE

surface

#F4EFFD

border

#CECAD5

text

#0F0A16

muted

#7F7C84

Preview Lab

Preview with #644FDB

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

Preview Lab → · Contrast checker → · Palette generator →