#645CE9#645CE9

#645CE9 is a mid, highly saturated blue. Relative luminance 0.162; OKLCH L 56.3% C 0.206 H 280.0°. Best body text is #FFFFFF at 4.94:1 contrast (WCAG AA passes).

Color values

HEX	#645CE9
RGB	rgb(100, 92, 233)
HSL	hsl(243, 76%, 64%)
HSV	hsv(243, 61%, 91%)
CMYK	cmyk(57.1%, 60.5%, 0%, 8.6%)
CIE-LAB	lab(47.29, 42.27, -70.55)
CIE-LCH	lch(47.29, 82.25, 300.92°)
OKLab	oklab(56.31% 0.0358 -0.2027)
OKLCH	oklch(56.31% 0.206 280)
XYZ	xyz(23.7860, 16.2452, 78.9572)
Luminance	0.1625 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645CE9 #E1E95C

analogous

#5C9AE9 #645CE9 #AA5CE9

triadic

#645CE9 #E9645C #5CE964

tetradic

#645CE9 #E95C9A #E1E95C #5CE9AA

square

#645CE9 #E95C9A #E1E95C #5CE9AA

split-complementary

#645CE9 #E9AA5C #9AE95C

monochromatic

#2118B3 #3126E2 #645CE9 #9792F0 #CBC8F8

Accessibility & contrast

On white

4.94

#645CE9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.25

#645CE9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645CE9

4.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645CE9	#FFFFFF	#000000	##FFFFFF
##645CE9	1.00	4.94	4.25	4.94
#FFFFFF	4.94	1.00	21.00	1.00
#000000	4.25	21.00	1.00	21.00
##FFFFFF	4.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0076EE

Deuteranopia (green-blind)

#006BE6

Tritanopia (blue-blind)

#127E9A

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #645ce9;
/* rgb */ color: rgb(100, 92, 233);
/* oklch */ color: oklch(56.3% 0.206 280.0);

Tailwind

colors: {
  custom: {
    50: '#9c8bf1',
    500: '#645ce9',
    950: '#000000',
  },
}

SCSS

$custom: #645ce9;
$custom-light: #9c8bf1;
$custom-dark: #000000;

JSON

{
  "hex": "#645ce9",
  "rgb": {
    "r": 100,
    "g": 92,
    "b": 233
  },
  "hsl": {
    "h": 243.404,
    "s": 76.216,
    "l": 63.725
  },
  "oklch": {
    "l": 0.56306,
    "c": 0.20586,
    "h": 280
  },
  "luminance": 0.16247
}

Semantic roles & 50–950 ramp

primary

#645CE9

secondary

#E6E9B8

accent

#D80DCD

background

#FAF8FE

surface

#F4F0FD

border

#CECBD5

text

#0F0C17

muted

#7F7D85

Preview Lab

Preview with #645CE9

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

Preview Lab → · Contrast checker → · Palette generator →