#645FD1#645FD1

#645FD1 is a mid, vivid blue. Relative luminance 0.155; OKLCH L 55.0% C 0.171 H 281.2°. Best body text is #FFFFFF at 5.12:1 contrast (WCAG AA passes).

Color values

HEX	#645FD1
RGB	rgb(100, 95, 209)
HSL	hsl(243, 55%, 60%)
HSV	hsv(243, 55%, 82%)
CMYK	cmyk(52.2%, 54.5%, 0%, 18%)
CIE-LAB	lab(46.31, 33.00, -58.53)
CIE-LCH	lch(46.31, 67.19, 299.42°)
OKLab	oklab(55.04% 0.0331 -0.1673)
OKLCH	oklch(55.04% 0.171 281.2)
XYZ	xyz(20.8528, 15.4960, 62.2015)
Luminance	0.1550 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645FD1 #CCD15F

analogous

#5F93D1 #645FD1 #9D5FD1

triadic

#645FD1 #D1645F #5FD164

tetradic

#645FD1 #D15F93 #CCD15F #5FD19D

square

#645FD1 #D15F93 #CCD15F #5FD19D

split-complementary

#645FD1 #D19D5F #93D15F

monochromatic

#2D298D #3C36BD #645FD1 #928FDF #C0BEEC

Accessibility & contrast

On white

5.12

#645FD1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.10

#645FD1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645FD1

5.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645FD1	#FFFFFF	#000000	##FFFFFF
##645FD1	1.00	5.12	4.10	5.12
#FFFFFF	5.12	1.00	21.00	1.00
#000000	4.10	21.00	1.00	21.00
##FFFFFF	5.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1872D5

Deuteranopia (green-blind)

#006ACF

Tritanopia (blue-blind)

#36798F

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #645fd1;
/* rgb */ color: rgb(100, 95, 209);
/* oklch */ color: oklch(55.0% 0.171 281.2);

Tailwind

colors: {
  custom: {
    50: '#988ce0',
    500: '#645fd1',
    950: '#000000',
  },
}

SCSS

$custom: #645fd1;
$custom-light: #988ce0;
$custom-dark: #000000;

JSON

{
  "hex": "#645fd1",
  "rgb": {
    "r": 100,
    "g": 95,
    "b": 209
  },
  "hsl": {
    "h": 242.632,
    "s": 55.34,
    "l": 59.608
  },
  "oklch": {
    "l": 0.55042,
    "c": 0.17056,
    "h": 281.2
  },
  "luminance": 0.15497
}

Semantic roles & 50–950 ramp

primary

#645FD1

secondary

#DADCB0

accent

#DF49D8

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0E0C15

muted

#7E7D83

Preview Lab

Preview with #645FD1

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

Preview Lab → · Contrast checker → · Palette generator →