#645DCE#645DCE

#645DCE is a mid, vivid blue. Relative luminance 0.150; OKLCH L 54.5% C 0.169 H 282.0°. Best body text is #FFFFFF at 5.25:1 contrast (WCAG AA passes).

Color values

HEX	#645DCE
RGB	rgb(100, 93, 206)
HSL	hsl(244, 54%, 59%)
HSV	hsv(244, 55%, 81%)
CMYK	cmyk(51.5%, 54.9%, 0%, 19.2%)
CIE-LAB	lab(45.62, 33.29, -57.91)
CIE-LCH	lch(45.62, 66.79, 299.89°)
OKLab	oklab(54.47% 0.0352 -0.1655)
OKLCH	oklch(54.47% 0.169 282)
XYZ	xyz(20.3071, 14.9931, 60.2045)
Luminance	0.1499 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645DCE #C7CE5D

analogous

#5D8ECE #645DCE #9C5DCE

triadic

#645DCE #CE645D #5DCE64

tetradic

#645DCE #CE5D8E #C7CE5D #5DCE9C

square

#645DCE #CE5D8E #C7CE5D #5DCE9C

split-complementary

#645DCE #CE9C5D #8ECE5D

monochromatic

#2F2988 #3F37B7 #645DCE #918CDC #BEBBEA

Accessibility & contrast

On white

5.25

#645DCE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.00

#645DCE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645DCE

5.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645DCE	#FFFFFF	#000000	##FFFFFF
##645DCE	1.00	5.25	4.00	5.25
#FFFFFF	5.25	1.00	21.00	1.00
#000000	4.00	21.00	1.00	21.00
##FFFFFF	5.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1670D2

Deuteranopia (green-blind)

#0168CC

Tritanopia (blue-blind)

#39778C

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #645dce;
/* rgb */ color: rgb(100, 93, 206);
/* oklch */ color: oklch(54.5% 0.169 282.0);

Tailwind

colors: {
  custom: {
    50: '#988bde',
    500: '#645dce',
    950: '#000000',
  },
}

SCSS

$custom: #645dce;
$custom-light: #988bde;
$custom-dark: #000000;

JSON

{
  "hex": "#645dce",
  "rgb": {
    "r": 100,
    "g": 93,
    "b": 206
  },
  "hsl": {
    "h": 243.717,
    "s": 53.555,
    "l": 58.627
  },
  "oklch": {
    "l": 0.54471,
    "c": 0.1692,
    "h": 282
  },
  "luminance": 0.14994
}

Semantic roles & 50–950 ramp

primary

#645DCE

secondary

#D7DAAD

accent

#DD4BD4

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0E0C15

muted

#7E7D83

Preview Lab

Preview with #645DCE

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

Preview Lab → · Contrast checker → · Palette generator →