#645CD5#645CD5

#645CD5 is a mid, vivid blue. Relative luminance 0.152; OKLCH L 54.8% C 0.180 H 281.6°. Best body text is #FFFFFF at 5.21:1 contrast (WCAG AA passes).

Color values

HEX	#645CD5
RGB	rgb(100, 92, 213)
HSL	hsl(244, 59%, 60%)
HSV	hsv(244, 57%, 84%)
CMYK	cmyk(53.1%, 56.8%, 0%, 16.5%)
CIE-LAB	lab(45.86, 36.05, -61.53)
CIE-LCH	lch(45.86, 71.32, 300.37°)
OKLab	oklab(54.8% 0.0363 -0.1762)
OKLCH	oklch(54.8% 0.18 281.6)
XYZ	xyz(21.0892, 15.1665, 64.7540)
Luminance	0.1517 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645CD5 #CDD55C

analogous

#5C91D5 #645CD5 #A15CD5

triadic

#645CD5 #D5645C #5CD564

tetradic

#645CD5 #D55C91 #CDD55C #5CD5A1

square

#645CD5 #D55C91 #CDD55C #5CD5A1

split-complementary

#645CD5 #D5A15C #91D55C

monochromatic

#2D2591 #3B32C2 #645CD5 #928DE2 #C1BDEE

Accessibility & contrast

On white

5.21

#645CD5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.03

#645CD5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645CD5

5.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645CD5	#FFFFFF	#000000	##FFFFFF
##645CD5	1.00	5.21	4.03	5.21
#FFFFFF	5.21	1.00	21.00	1.00
#000000	4.03	21.00	1.00	21.00
##FFFFFF	5.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0071D9

Deuteranopia (green-blind)

#0068D2

Tritanopia (blue-blind)

#337890

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #645cd5;
/* rgb */ color: rgb(100, 92, 213);
/* oklch */ color: oklch(54.8% 0.180 281.6);

Tailwind

colors: {
  custom: {
    50: '#998ae3',
    500: '#645cd5',
    950: '#000000',
  },
}

SCSS

$custom: #645cd5;
$custom-light: #998ae3;
$custom-dark: #000000;

JSON

{
  "hex": "#645cd5",
  "rgb": {
    "r": 100,
    "g": 92,
    "b": 213
  },
  "hsl": {
    "h": 243.967,
    "s": 59.024,
    "l": 59.804
  },
  "oklch": {
    "l": 0.54797,
    "c": 0.17989,
    "h": 281.6
  },
  "luminance": 0.15168
}

Semantic roles & 50–950 ramp

primary

#645CD5

secondary

#DBDEAF

accent

#E246D8

background

#F9F8FE

surface

#F2F0FC

border

#CCCBD5

text

#0F0C15

muted

#7E7D84

Preview Lab

Preview with #645CD5

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

Preview Lab → · Contrast checker → · Palette generator →