#645DDC#645DDC

#645DDC is a mid, vivid blue. Relative luminance 0.157; OKLCH L 55.5% C 0.188 H 280.8°. Best body text is #FFFFFF at 5.07:1 contrast (WCAG AA passes).

Color values

HEX	#645DDC
RGB	rgb(100, 93, 220)
HSL	hsl(243, 64%, 61%)
HSV	hsv(243, 58%, 86%)
CMYK	cmyk(54.5%, 57.7%, 0%, 13.7%)
CIE-LAB	lab(46.58, 37.63, -64.35)
CIE-LCH	lch(46.58, 74.55, 300.32°)
OKLab	oklab(55.49% 0.0353 -0.1845)
OKLCH	oklch(55.49% 0.188 280.8)
XYZ	xyz(22.0841, 15.7040, 69.5637)
Luminance	0.1570 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645DDC #D5DC5D

analogous

#5D96DC #645DDC #A45DDC

triadic

#645DDC #DC645D #5DDC64

tetradic

#645DDC #DC5D96 #D5DC5D #5DDCA4

square

#645DDC #DC5D96 #D5DC5D #5DDCA4

split-complementary

#645DDC #DCA45D #96DC5D

monochromatic

#29229D #362DCF #645DDC #948FE7 #C4C2F2

Accessibility & contrast

On white

5.07

#645DDC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.14

#645DDC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645DDC

5.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645DDC	#FFFFFF	#000000	##FFFFFF
##645DDC	1.00	5.07	4.14	5.07
#FFFFFF	5.07	1.00	21.00	1.00
#000000	4.14	21.00	1.00	21.00
##FFFFFF	5.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0073E0

Deuteranopia (green-blind)

#006AD9

Tritanopia (blue-blind)

#2A7B93

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #645ddc;
/* rgb */ color: rgb(100, 93, 220);
/* oklch */ color: oklch(55.5% 0.188 280.8);

Tailwind

colors: {
  custom: {
    50: '#9a8be8',
    500: '#645ddc',
    950: '#000000',
  },
}

SCSS

$custom: #645ddc;
$custom-light: #9a8be8;
$custom-dark: #000000;

JSON

{
  "hex": "#645ddc",
  "rgb": {
    "r": 100,
    "g": 93,
    "b": 220
  },
  "hsl": {
    "h": 243.307,
    "s": 64.467,
    "l": 61.373
  },
  "oklch": {
    "l": 0.55486,
    "c": 0.18782,
    "h": 280.8
  },
  "luminance": 0.15705
}

Semantic roles & 50–950 ramp

primary

#645DDC

secondary

#E0E2B3

accent

#CC19C2

background

#FAF8FE

surface

#F3F0FD

border

#CDCBD5

text

#0F0C16

muted

#7F7D84

Preview Lab

Preview with #645DDC

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

Preview Lab → · Contrast checker → · Palette generator →