#645AE7#645AE7

#645AE7 is a mid, highly saturated blue. Relative luminance 0.158; OKLCH L 55.8% C 0.206 H 280.6°. Best body text is #FFFFFF at 5.05:1 contrast (WCAG AA passes).

Color values

HEX	#645AE7
RGB	rgb(100, 90, 231)
HSL	hsl(244, 75%, 63%)
HSV	hsv(244, 61%, 91%)
CMYK	cmyk(56.7%, 61%, 0%, 9.4%)
CIE-LAB	lab(46.70, 42.82, -70.40)
CIE-LCH	lch(46.70, 82.40, 301.31°)
OKLab	oklab(55.82% 0.0378 -0.2023)
OKLCH	oklch(55.82% 0.206 280.6)
XYZ	xyz(23.3310, 15.7896, 77.4041)
Luminance	0.1579 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645AE7 #DDE75A

analogous

#5A97E7 #645AE7 #AA5AE7

triadic

#645AE7 #E7645A #5AE764

tetradic

#645AE7 #E75A97 #DDE75A #5AE7AA

square

#645AE7 #E75A97 #DDE75A #5AE7AA

split-complementary

#645AE7 #E7AA5A #97E75A

monochromatic

#2419AD #3225DF #645AE7 #968FEF #C8C5F7

Accessibility & contrast

On white

5.05

#645AE7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.16

#645AE7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645AE7

5.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645AE7	#FFFFFF	#000000	##FFFFFF
##645AE7	1.00	5.05	4.16	5.05
#FFFFFF	5.05	1.00	21.00	1.00
#000000	4.16	21.00	1.00	21.00
##FFFFFF	5.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0074EC

Deuteranopia (green-blind)

#0069E4

Tritanopia (blue-blind)

#187C98

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #645ae7;
/* rgb */ color: rgb(100, 90, 231);
/* oklch */ color: oklch(55.8% 0.206 280.6);

Tailwind

colors: {
  custom: {
    50: '#9c89f0',
    500: '#645ae7',
    950: '#000000',
  },
}

SCSS

$custom: #645ae7;
$custom-light: #9c89f0;
$custom-dark: #000000;

JSON

{
  "hex": "#645ae7",
  "rgb": {
    "r": 100,
    "g": 90,
    "b": 231
  },
  "hsl": {
    "h": 244.255,
    "s": 74.603,
    "l": 62.941
  },
  "oklch": {
    "l": 0.55821,
    "c": 0.20576,
    "h": 280.6
  },
  "luminance": 0.15791
}

Semantic roles & 50–950 ramp

primary

#645AE7

secondary

#E4E8B5

accent

#D70FC9

background

#FAF8FE

surface

#F4F0FD

border

#CECBD5

text

#0F0B17

muted

#7F7C85

Preview Lab

Preview with #645AE7

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

Preview Lab → · Contrast checker → · Palette generator →