#645BD7#645BD7

#645BD7 is a mid, vivid blue. Relative luminance 0.151; OKLCH L 54.8% C 0.184 H 281.7°. Best body text is #FFFFFF at 5.22:1 contrast (WCAG AA passes).

Color values

HEX	#645BD7
RGB	rgb(100, 91, 215)
HSL	hsl(244, 61%, 60%)
HSV	hsv(244, 58%, 84%)
CMYK	cmyk(53.5%, 57.7%, 0%, 15.7%)
CIE-LAB	lab(45.77, 37.27, -62.83)
CIE-LCH	lch(45.77, 73.05, 300.68°)
OKLab	oklab(54.77% 0.0373 -0.18)
OKLCH	oklch(54.77% 0.184 281.7)
XYZ	xyz(21.2586, 15.0965, 66.0705)
Luminance	0.1510 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645BD7 #CED75B

analogous

#5B90D7 #645BD7 #A25BD7

triadic

#645BD7 #D7645B #5BD764

tetradic

#645BD7 #D75B90 #CED75B #5BD7A2

square

#645BD7 #D75B90 #CED75B #5BD7A2

split-complementary

#645BD7 #D7A25B #90D75B

monochromatic

#2C2494 #3B30C5 #645BD7 #938CE3 #C1BDEF

Accessibility & contrast

On white

5.22

#645BD7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.02

#645BD7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645BD7

5.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645BD7	#FFFFFF	#000000	##FFFFFF
##645BD7	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)

#0071DB

Deuteranopia (green-blind)

#0068D4

Tritanopia (blue-blind)

#317890

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #645bd7;
/* rgb */ color: rgb(100, 91, 215);
/* oklch */ color: oklch(54.8% 0.184 281.7);

Tailwind

colors: {
  custom: {
    50: '#998ae4',
    500: '#645bd7',
    950: '#000000',
  },
}

SCSS

$custom: #645bd7;
$custom-light: #998ae4;
$custom-dark: #000000;

JSON

{
  "hex": "#645bd7",
  "rgb": {
    "r": 100,
    "g": 91,
    "b": 215
  },
  "hsl": {
    "h": 244.355,
    "s": 60.784,
    "l": 60
  },
  "oklch": {
    "l": 0.54771,
    "c": 0.18384,
    "h": 281.7
  },
  "luminance": 0.15098
}

Semantic roles & 50–950 ramp

primary

#645BD7

secondary

#DBDFAF

accent

#E444D8

background

#F9F8FE

surface

#F2F0FC

border

#CCCBD5

text

#0F0B16

muted

#7E7C84

Preview Lab

Preview with #645BD7

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

Preview Lab → · Contrast checker → · Palette generator →