#645EE5#645EE5

#645EE5 is a mid, vivid blue. Relative luminance 0.164; OKLCH L 56.3% C 0.198 H 279.9°. Best body text is #FFFFFF at 4.91:1 contrast (WCAG AA passes).

Color values

HEX	#645EE5
RGB	rgb(100, 94, 229)
HSL	hsl(243, 72%, 63%)
HSV	hsv(243, 59%, 90%)
CMYK	cmyk(56.3%, 59%, 0%, 10.2%)
CIE-LAB	lab(47.46, 39.84, -68.03)
CIE-LCH	lch(47.46, 78.84, 300.35°)
OKLab	oklab(56.33% 0.0341 -0.1953)
OKLCH	oklch(56.33% 0.198 279.9)
XYZ	xyz(23.3966, 16.3703, 76.0404)
Luminance	0.1637 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645EE5 #DFE55E

analogous

#5E9BE5 #645EE5 #A75EE5

triadic

#645EE5 #E5645E #5EE564

tetradic

#645EE5 #E55E9B #DFE55E #5EE5A7

square

#645EE5 #E55E9B #DFE55E #5EE5A7

split-complementary

#645EE5 #E5A75E #9BE55E

monochromatic

#221CAD #3129DC #645EE5 #9793EE #C9C7F6

Accessibility & contrast

On white

4.91

#645EE5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.27

#645EE5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645EE5

4.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645EE5	#FFFFFF	#000000	##FFFFFF
##645EE5	1.00	4.91	4.27	4.91
#FFFFFF	4.91	1.00	21.00	1.00
#000000	4.27	21.00	1.00	21.00
##FFFFFF	4.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0076E9

Deuteranopia (green-blind)

#006BE2

Tritanopia (blue-blind)

#1C7E98

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #645ee5;
/* rgb */ color: rgb(100, 94, 229);
/* oklch */ color: oklch(56.3% 0.198 279.9);

Tailwind

colors: {
  custom: {
    50: '#9b8cee',
    500: '#645ee5',
    950: '#000000',
  },
}

SCSS

$custom: #645ee5;
$custom-light: #9b8cee;
$custom-dark: #000000;

JSON

{
  "hex": "#645ee5",
  "rgb": {
    "r": 100,
    "g": 94,
    "b": 229
  },
  "hsl": {
    "h": 242.667,
    "s": 72.193,
    "l": 63.333
  },
  "oklch": {
    "l": 0.56333,
    "c": 0.19826,
    "h": 279.9
  },
  "luminance": 0.16372
}

Semantic roles & 50–950 ramp

primary

#645EE5

secondary

#E5E7B7

accent

#D411CC

background

#FAF8FE

surface

#F4F0FD

border

#CECBD5

text

#0F0C16

muted

#7F7D84

Preview Lab

Preview with #645EE5

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

Preview Lab → · Contrast checker → · Palette generator →