#645BD0#645BD0

#645BD0 is a mid, vivid blue. Relative luminance 0.147; OKLCH L 54.3% C 0.175 H 282.4°. Best body text is #FFFFFF at 5.32:1 contrast (WCAG AA passes).

Color values

HEX	#645BD0
RGB	rgb(100, 91, 208)
HSL	hsl(245, 55%, 59%)
HSV	hsv(245, 56%, 82%)
CMYK	cmyk(51.9%, 56.2%, 0%, 18.4%)
CIE-LAB	lab(45.28, 35.11, -59.61)
CIE-LCH	lch(45.28, 69.18, 300.50°)
OKLab	oklab(54.26% 0.0374 -0.1705)
OKLCH	oklch(54.26% 0.175 282.4)
XYZ	xyz(20.3783, 14.7444, 61.4344)
Luminance	0.1475 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645BD0 #C7D05B

analogous

#5B8CD0 #645BD0 #9E5BD0

triadic

#645BD0 #D0645B #5BD064

tetradic

#645BD0 #D05B8C #C7D05B #5BD09E

square

#645BD0 #D05B8C #C7D05B #5BD09E

split-complementary

#645BD0 #D09E5B #8CD05B

monochromatic

#2F2789 #3F35B9 #645BD0 #918BDE #BEBAEB

Accessibility & contrast

On white

5.32

#645BD0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.95

#645BD0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645BD0

5.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645BD0	#FFFFFF	#000000	##FFFFFF
##645BD0	1.00	5.32	3.95	5.32
#FFFFFF	5.32	1.00	21.00	1.00
#000000	3.95	21.00	1.00	21.00
##FFFFFF	5.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#016FD4

Deuteranopia (green-blind)

#0067CE

Tritanopia (blue-blind)

#38768D

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #645bd0;
/* rgb */ color: rgb(100, 91, 208);
/* oklch */ color: oklch(54.3% 0.175 282.4);

Tailwind

colors: {
  custom: {
    50: '#9889df',
    500: '#645bd0',
    950: '#000000',
  },
}

SCSS

$custom: #645bd0;
$custom-light: #9889df;
$custom-dark: #000000;

JSON

{
  "hex": "#645bd0",
  "rgb": {
    "r": 100,
    "g": 91,
    "b": 208
  },
  "hsl": {
    "h": 244.615,
    "s": 55.45,
    "l": 58.627
  },
  "oklch": {
    "l": 0.54259,
    "c": 0.17457,
    "h": 282.4
  },
  "luminance": 0.14746
}

Semantic roles & 50–950 ramp

primary

#645BD0

secondary

#D7DBAC

accent

#DF49D3

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0E0B15

muted

#7E7C83

Preview Lab

Preview with #645BD0

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

Preview Lab → · Contrast checker → · Palette generator →