#645CD3#645CD3

#645CD3 is a mid, vivid blue. Relative luminance 0.151; OKLCH L 54.7% C 0.177 H 281.8°. Best body text is #FFFFFF at 5.23:1 contrast (WCAG AA passes).

Color values

HEX	#645CD3
RGB	rgb(100, 92, 211)
HSL	hsl(244, 57%, 59%)
HSV	hsv(244, 56%, 83%)
CMYK	cmyk(52.6%, 56.4%, 0%, 17.3%)
CIE-LAB	lab(45.72, 35.44, -60.61)
CIE-LCH	lch(45.72, 70.21, 300.31°)
OKLab	oklab(54.65% 0.0363 -0.1735)
OKLCH	oklch(54.65% 0.177 281.8)
XYZ	xyz(20.8369, 15.0656, 63.4254)
Luminance	0.1507 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645CD3 #CBD35C

analogous

#5C8FD3 #645CD3 #A05CD3

triadic

#645CD3 #D3645C #5CD364

tetradic

#645CD3 #D35C8F #CBD35C #5CD3A0

square

#645CD3 #D35C8F #CBD35C #5CD3A0

split-complementary

#645CD3 #D3A05C #8FD35C

monochromatic

#2D268E #3D33BE #645CD3 #928CE0 #C0BCED

Accessibility & contrast

On white

5.23

#645CD3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.01

#645CD3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645CD3

5.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645CD3	#FFFFFF	#000000	##FFFFFF
##645CD3	1.00	5.23	4.01	5.23
#FFFFFF	5.23	1.00	21.00	1.00
#000000	4.01	21.00	1.00	21.00
##FFFFFF	5.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0070D7

Deuteranopia (green-blind)

#0068D1

Tritanopia (blue-blind)

#35778E

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #645cd3;
/* rgb */ color: rgb(100, 92, 211);
/* oklch */ color: oklch(54.7% 0.177 281.8);

Tailwind

colors: {
  custom: {
    50: '#998ae1',
    500: '#645cd3',
    950: '#000000',
  },
}

SCSS

$custom: #645cd3;
$custom-light: #998ae1;
$custom-dark: #000000;

JSON

{
  "hex": "#645cd3",
  "rgb": {
    "r": 100,
    "g": 92,
    "b": 211
  },
  "hsl": {
    "h": 244.034,
    "s": 57.488,
    "l": 59.412
  },
  "oklch": {
    "l": 0.54652,
    "c": 0.17724,
    "h": 281.8
  },
  "luminance": 0.15067
}

Semantic roles & 50–950 ramp

primary

#645CD3

secondary

#D9DDAE

accent

#E147D6

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0F0C15

muted

#7E7D83

Preview Lab

Preview with #645CD3

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

Preview Lab → · Contrast checker → · Palette generator →