#645EE9#645EE9

#645EE9 is a mid, highly saturated blue. Relative luminance 0.166; OKLCH L 56.6% C 0.203 H 279.6°. Best body text is #FFFFFF at 4.86:1 contrast (WCAG AA passes).

Color values

HEX	#645EE9
RGB	rgb(100, 94, 233)
HSL	hsl(243, 76%, 64%)
HSV	hsv(243, 60%, 91%)
CMYK	cmyk(57.1%, 59.7%, 0%, 8.6%)
CIE-LAB	lab(47.75, 41.09, -69.82)
CIE-LCH	lch(47.75, 81.01, 300.48°)
OKLab	oklab(56.64% 0.034 -0.2005)
OKLCH	oklch(56.64% 0.203 279.6)
XYZ	xyz(23.9616, 16.5963, 79.0157)
Luminance	0.1660 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645EE9 #E3E95E

analogous

#5E9EE9 #645EE9 #AA5EE9

triadic

#645EE9 #E9645E #5EE964

tetradic

#645EE9 #E95E9E #E3E95E #5EE9AA

square

#645EE9 #E95E9E #E3E95E #5EE9AA

split-complementary

#645EE9 #E9AA5E #9EE95E

monochromatic

#1F19B4 #3028E2 #645EE9 #9894F0 #CCCAF8

Accessibility & contrast

On white

4.86

#645EE9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.32

#645EE9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645EE9

4.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645EE9	#FFFFFF	#000000	##FFFFFF
##645EE9	1.00	4.86	4.32	4.86
#FFFFFF	4.86	1.00	21.00	1.00
#000000	4.32	21.00	1.00	21.00
##FFFFFF	4.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0077EE

Deuteranopia (green-blind)

#006CE6

Tritanopia (blue-blind)

#11809B

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #645ee9;
/* rgb */ color: rgb(100, 94, 233);
/* oklch */ color: oklch(56.6% 0.203 279.6);

Tailwind

colors: {
  custom: {
    50: '#9c8cf1',
    500: '#645ee9',
    950: '#000000',
  },
}

SCSS

$custom: #645ee9;
$custom-light: #9c8cf1;
$custom-dark: #000000;

JSON

{
  "hex": "#645ee9",
  "rgb": {
    "r": 100,
    "g": 94,
    "b": 233
  },
  "hsl": {
    "h": 242.59,
    "s": 75.956,
    "l": 64.118
  },
  "oklch": {
    "l": 0.56639,
    "c": 0.20341,
    "h": 279.6
  },
  "luminance": 0.16598
}

Semantic roles & 50–950 ramp

primary

#645EE9

secondary

#E8EAB9

accent

#D80DCF

background

#FAF8FE

surface

#F4F0FD

border

#CECBD5

text

#0F0C17

muted

#7F7D85

Preview Lab

Preview with #645EE9

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

Preview Lab → · Contrast checker → · Palette generator →