#645DE7#645DE7

#645DE7 is a mid, highly saturated blue. Relative luminance 0.163; OKLCH L 56.3% C 0.202 H 280.0°. Best body text is #FFFFFF at 4.93:1 contrast (WCAG AA passes).

Color values

HEX	#645DE7
RGB	rgb(100, 93, 231)
HSL	hsl(243, 74%, 64%)
HSV	hsv(243, 60%, 91%)
CMYK	cmyk(56.7%, 59.7%, 0%, 9.4%)
CIE-LAB	lab(47.37, 41.05, -69.30)
CIE-LCH	lch(47.37, 80.55, 300.64°)
OKLab	oklab(56.32% 0.035 -0.199)
OKLCH	oklch(56.32% 0.202 280)
XYZ	xyz(23.5891, 16.3060, 77.4901)
Luminance	0.1631 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645DE7 #E0E75D

analogous

#5D9BE7 #645DE7 #A95DE7

triadic

#645DE7 #E7645D #5DE764

tetradic

#645DE7 #E75D9B #E0E75D #5DE7A9

square

#645DE7 #E75D9B #E0E75D #5DE7A9

split-complementary

#645DE7 #E7A95D #9BE75D

monochromatic

#221AB0 #3128DF #645DE7 #9792EF #CAC8F7

Accessibility & contrast

On white

4.93

#645DE7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.26

#645DE7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645DE7

4.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645DE7	#FFFFFF	#000000	##FFFFFF
##645DE7	1.00	4.93	4.26	4.93
#FFFFFF	4.93	1.00	21.00	1.00
#000000	4.26	21.00	1.00	21.00
##FFFFFF	4.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0076EC

Deuteranopia (green-blind)

#006BE4

Tritanopia (blue-blind)

#177E99

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #645de7;
/* rgb */ color: rgb(100, 93, 231);
/* oklch */ color: oklch(56.3% 0.202 280.0);

Tailwind

colors: {
  custom: {
    50: '#9b8bf0',
    500: '#645de7',
    950: '#000000',
  },
}

SCSS

$custom: #645de7;
$custom-light: #9b8bf0;
$custom-dark: #000000;

JSON

{
  "hex": "#645de7",
  "rgb": {
    "r": 100,
    "g": 93,
    "b": 231
  },
  "hsl": {
    "h": 243.043,
    "s": 74.194,
    "l": 63.529
  },
  "oklch": {
    "l": 0.56317,
    "c": 0.20208,
    "h": 280
  },
  "luminance": 0.16308
}

Semantic roles & 50–950 ramp

primary

#645DE7

secondary

#E6E8B7

accent

#D60FCC

background

#FAF8FE

surface

#F4F0FD

border

#CECBD5

text

#0F0C17

muted

#7F7D85

Preview Lab

Preview with #645DE7

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

Preview Lab → · Contrast checker → · Palette generator →