#645CE7#645CE7

#645CE7 is a mid, highly saturated blue. Relative luminance 0.161; OKLCH L 56.2% C 0.203 H 280.2°. Best body text is #FFFFFF at 4.97:1 contrast (WCAG AA passes).

Color values

HEX	#645CE7
RGB	rgb(100, 92, 231)
HSL	hsl(243, 74%, 63%)
HSV	hsv(243, 60%, 91%)
CMYK	cmyk(56.7%, 60.2%, 0%, 9.4%)
CIE-LAB	lab(47.15, 41.64, -69.67)
CIE-LCH	lch(47.15, 81.17, 300.87°)
OKLab	oklab(56.15% 0.0359 -0.2001)
OKLCH	oklch(56.15% 0.203 280.2)
XYZ	xyz(23.5019, 16.1316, 77.4611)
Luminance	0.1613 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645CE7 #DFE75C

analogous

#5C99E7 #645CE7 #A95CE7

triadic

#645CE7 #E7645C #5CE764

tetradic

#645CE7 #E75C99 #DFE75C #5CE7A9

square

#645CE7 #E75C99 #DFE75C #5CE7A9

split-complementary

#645CE7 #E7A95C #99E75C

monochromatic

#221AAF #3127DF #645CE7 #9791EF #C9C7F7

Accessibility & contrast

On white

4.97

#645CE7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.23

#645CE7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645CE7

4.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645CE7	#FFFFFF	#000000	##FFFFFF
##645CE7	1.00	4.97	4.23	4.97
#FFFFFF	4.97	1.00	21.00	1.00
#000000	4.23	21.00	1.00	21.00
##FFFFFF	4.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0075EC

Deuteranopia (green-blind)

#006AE4

Tritanopia (blue-blind)

#187E99

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #645ce7;
/* rgb */ color: rgb(100, 92, 231);
/* oklch */ color: oklch(56.2% 0.203 280.2);

Tailwind

colors: {
  custom: {
    50: '#9b8af0',
    500: '#645ce7',
    950: '#000000',
  },
}

SCSS

$custom: #645ce7;
$custom-light: #9b8af0;
$custom-dark: #000000;

JSON

{
  "hex": "#645ce7",
  "rgb": {
    "r": 100,
    "g": 92,
    "b": 231
  },
  "hsl": {
    "h": 243.453,
    "s": 74.332,
    "l": 63.333
  },
  "oklch": {
    "l": 0.56151,
    "c": 0.20332,
    "h": 280.2
  },
  "luminance": 0.16133
}

Semantic roles & 50–950 ramp

primary

#645CE7

secondary

#E5E8B7

accent

#D60FCB

background

#FAF8FE

surface

#F4F0FD

border

#CECBD5

text

#0F0C17

muted

#7F7D85

Preview Lab

Preview with #645CE7

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

Preview Lab → · Contrast checker → · Palette generator →