#645DE3#645DE3

#645DE3 is a mid, vivid blue. Relative luminance 0.161; OKLCH L 56.0% C 0.197 H 280.3°. Best body text is #FFFFFF at 4.98:1 contrast (WCAG AA passes).

Color values

HEX	#645DE3
RGB	rgb(100, 93, 227)
HSL	hsl(243, 71%, 63%)
HSV	hsv(243, 59%, 89%)
CMYK	cmyk(55.9%, 59%, 0%, 11%)
CIE-LAB	lab(47.08, 39.81, -67.51)
CIE-LCH	lch(47.08, 78.37, 300.53°)
OKLab	oklab(56.01% 0.0351 -0.1938)
OKLCH	oklch(56.01% 0.197 280.3)
XYZ	xyz(23.0307, 16.0826, 74.5488)
Luminance	0.1608 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645DE3 #DCE35D

analogous

#5D99E3 #645DE3 #A75DE3

triadic

#645DE3 #E3645D #5DE364

tetradic

#645DE3 #E35D99 #DCE35D #5DE3A7

square

#645DE3 #E35D99 #DCE35D #5DE3A7

split-complementary

#645DE3 #E3A75D #99E35D

monochromatic

#241DA8 #3229DA #645DE3 #9691EC #C8C5F5

Accessibility & contrast

On white

4.98

#645DE3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.22

#645DE3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645DE3

4.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645DE3	#FFFFFF	#000000	##FFFFFF
##645DE3	1.00	4.98	4.22	4.98
#FFFFFF	4.98	1.00	21.00	1.00
#000000	4.22	21.00	1.00	21.00
##FFFFFF	4.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0075E7

Deuteranopia (green-blind)

#006BE0

Tritanopia (blue-blind)

#207D97

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #645de3;
/* rgb */ color: rgb(100, 93, 227);
/* oklch */ color: oklch(56.0% 0.197 280.3);

Tailwind

colors: {
  custom: {
    50: '#9b8bed',
    500: '#645de3',
    950: '#000000',
  },
}

SCSS

$custom: #645de3;
$custom-light: #9b8bed;
$custom-dark: #000000;

JSON

{
  "hex": "#645de3",
  "rgb": {
    "r": 100,
    "g": 93,
    "b": 227
  },
  "hsl": {
    "h": 243.134,
    "s": 70.526,
    "l": 62.745
  },
  "oklch": {
    "l": 0.56012,
    "c": 0.19693,
    "h": 280.3
  },
  "luminance": 0.16084
}

Semantic roles & 50–950 ramp

primary

#645DE3

secondary

#E4E6B6

accent

#D313C9

background

#FAF8FE

surface

#F4F0FD

border

#CECBD5

text

#0F0C16

muted

#7F7D84

Preview Lab

Preview with #645DE3

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

Preview Lab → · Contrast checker → · Palette generator →