#645DD3#645DD3

#645DD3 is a mid, vivid blue. Relative luminance 0.152; OKLCH L 54.8% C 0.176 H 281.6°. Best body text is #FFFFFF at 5.19:1 contrast (WCAG AA passes).

Color values

HEX	#645DD3
RGB	rgb(100, 93, 211)
HSL	hsl(244, 57%, 60%)
HSV	hsv(244, 56%, 83%)
CMYK	cmyk(52.6%, 55.9%, 0%, 17.3%)
CIE-LAB	lab(45.96, 34.83, -60.23)
CIE-LCH	lch(45.96, 69.57, 300.04°)
OKLab	oklab(54.83% 0.0353 -0.1723)
OKLCH	oklch(54.83% 0.176 281.6)
XYZ	xyz(20.9241, 15.2400, 63.4544)
Luminance	0.1524 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645DD3 #CCD35D

analogous

#5D91D3 #645DD3 #9F5DD3

triadic

#645DD3 #D3645D #5DD364

tetradic

#645DD3 #D35D91 #CCD35D #5DD39F

square

#645DD3 #D35D91 #CCD35D #5DD39F

split-complementary

#645DD3 #D39F5D #91D35D

monochromatic

#2D278F #3C34BF #645DD3 #928DE0 #C0BDED

Accessibility & contrast

On white

5.19

#645DD3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.05

#645DD3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645DD3

5.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645DD3	#FFFFFF	#000000	##FFFFFF
##645DD3	1.00	5.19	4.05	5.19
#FFFFFF	5.19	1.00	21.00	1.00
#000000	4.05	21.00	1.00	21.00
##FFFFFF	5.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0471D7

Deuteranopia (green-blind)

#0069D1

Tritanopia (blue-blind)

#35788F

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #645dd3;
/* rgb */ color: rgb(100, 93, 211);
/* oklch */ color: oklch(54.8% 0.176 281.6);

Tailwind

colors: {
  custom: {
    50: '#988be1',
    500: '#645dd3',
    950: '#000000',
  },
}

SCSS

$custom: #645dd3;
$custom-light: #988be1;
$custom-dark: #000000;

JSON

{
  "hex": "#645dd3",
  "rgb": {
    "r": 100,
    "g": 93,
    "b": 211
  },
  "hsl": {
    "h": 243.559,
    "s": 57.282,
    "l": 59.608
  },
  "oklch": {
    "l": 0.54828,
    "c": 0.17591,
    "h": 281.6
  },
  "luminance": 0.15241
}

Semantic roles & 50–950 ramp

primary

#645DD3

secondary

#DADDAF

accent

#E147D7

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0F0C15

muted

#7E7D83

Preview Lab

Preview with #645DD3

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

Preview Lab → · Contrast checker → · Palette generator →