#645BE3#645BE3

#645BE3 is a mid, vivid blue. Relative luminance 0.157; OKLCH L 55.7% C 0.199 H 280.7°. Best body text is #FFFFFF at 5.06:1 contrast (WCAG AA passes).

Color values

HEX	#645BE3
RGB	rgb(100, 91, 227)
HSL	hsl(244, 71%, 62%)
HSV	hsv(244, 60%, 89%)
CMYK	cmyk(55.9%, 59.9%, 0%, 11%)
CIE-LAB	lab(46.63, 40.99, -68.25)
CIE-LCH	lch(46.63, 79.62, 300.99°)
OKLab	oklab(55.68% 0.037 -0.196)
OKLCH	oklch(55.68% 0.199 280.7)
XYZ	xyz(22.8574, 15.7361, 74.4910)
Luminance	0.1574 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645BE3 #DAE35B

analogous

#5B96E3 #645BE3 #A85BE3

triadic

#645BE3 #E3645B #5BE364

tetradic

#645BE3 #E35B96 #DAE35B #5BE3A8

square

#645BE3 #E35B96 #DAE35B #5BE3A8

split-complementary

#645BE3 #E3A85B #96E35B

monochromatic

#261DA7 #3327DA #645BE3 #958FEC #C7C4F5

Accessibility & contrast

On white

5.06

#645BE3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.15

#645BE3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645BE3

5.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645BE3	#FFFFFF	#000000	##FFFFFF
##645BE3	1.00	5.06	4.15	5.06
#FFFFFF	5.06	1.00	21.00	1.00
#000000	4.15	21.00	1.00	21.00
##FFFFFF	5.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0074E7

Deuteranopia (green-blind)

#0069E0

Tritanopia (blue-blind)

#207C96

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #645be3;
/* rgb */ color: rgb(100, 91, 227);
/* oklch */ color: oklch(55.7% 0.199 280.7);

Tailwind

colors: {
  custom: {
    50: '#9b8aed',
    500: '#645be3',
    950: '#000000',
  },
}

SCSS

$custom: #645be3;
$custom-light: #9b8aed;
$custom-dark: #000000;

JSON

{
  "hex": "#645be3",
  "rgb": {
    "r": 100,
    "g": 91,
    "b": 227
  },
  "hsl": {
    "h": 243.971,
    "s": 70.833,
    "l": 62.353
  },
  "oklch": {
    "l": 0.55676,
    "c": 0.19943,
    "h": 280.7
  },
  "luminance": 0.15738
}

Semantic roles & 50–950 ramp

primary

#645BE3

secondary

#E2E6B4

accent

#D313C6

background

#FAF8FE

surface

#F4F0FD

border

#CECBD5

text

#0F0C16

muted

#7F7D84

Preview Lab

Preview with #645BE3

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

Preview Lab → · Contrast checker → · Palette generator →