#645DDE#645DDE

#645DDE is a mid, vivid blue. Relative luminance 0.158; OKLCH L 55.6% C 0.190 H 280.7°. Best body text is #FFFFFF at 5.05:1 contrast (WCAG AA passes).

Color values

HEX	#645DDE
RGB	rgb(100, 93, 222)
HSL	hsl(243, 66%, 62%)
HSV	hsv(243, 58%, 87%)
CMYK	cmyk(55%, 58.1%, 0%, 12.9%)
CIE-LAB	lab(46.72, 38.25, -65.26)
CIE-LCH	lch(46.72, 75.64, 300.38°)
OKLab	oklab(55.64% 0.0352 -0.1871)
OKLCH	oklch(55.64% 0.19 280.7)
XYZ	xyz(22.3506, 15.8105, 70.9671)
Luminance	0.1581 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645DDE #D7DE5D

analogous

#5D97DE #645DDE #A55DDE

triadic

#645DDE #DE645D #5DDE64

tetradic

#645DDE #DE5D97 #D7DE5D #5DDEA5

square

#645DDE #DE5D97 #D7DE5D #5DDEA5

split-complementary

#645DDE #DEA55D #97DE5D

monochromatic

#2821A0 #342BD3 #645DDE #9590E8 #C5C3F3

Accessibility & contrast

On white

5.05

#645DDE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.16

#645DDE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645DDE

5.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645DDE	#FFFFFF	#000000	##FFFFFF
##645DDE	1.00	5.05	4.16	5.05
#FFFFFF	5.05	1.00	21.00	1.00
#000000	4.16	21.00	1.00	21.00
##FFFFFF	5.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0074E2

Deuteranopia (green-blind)

#006ADB

Tritanopia (blue-blind)

#287B94

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #645dde;
/* rgb */ color: rgb(100, 93, 222);
/* oklch */ color: oklch(55.6% 0.190 280.7);

Tailwind

colors: {
  custom: {
    50: '#9a8be9',
    500: '#645dde',
    950: '#000000',
  },
}

SCSS

$custom: #645dde;
$custom-light: #9a8be9;
$custom-dark: #000000;

JSON

{
  "hex": "#645dde",
  "rgb": {
    "r": 100,
    "g": 93,
    "b": 222
  },
  "hsl": {
    "h": 243.256,
    "s": 66.154,
    "l": 61.765
  },
  "oklch": {
    "l": 0.55635,
    "c": 0.19044,
    "h": 280.7
  },
  "luminance": 0.15812
}

Semantic roles & 50–950 ramp

primary

#645DDE

secondary

#E1E3B4

accent

#CE17C4

background

#FAF8FE

surface

#F3F0FD

border

#CDCBD5

text

#0F0C16

muted

#7F7D84

Preview Lab

Preview with #645DDE

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

Preview Lab → · Contrast checker → · Palette generator →