#645AAF#645AAF

#645AAF is a mid, vivid blue. Relative luminance 0.131; OKLCH L 51.8% C 0.131 H 286.3°. Best body text is #FFFFFF at 5.80:1 contrast (WCAG AA passes).

Color values

HEX	#645AAF
RGB	rgb(100, 90, 175)
HSL	hsl(247, 35%, 52%)
HSV	hsv(247, 49%, 69%)
CMYK	cmyk(42.9%, 48.6%, 0%, 31.4%)
CIE-LAB	lab(42.94, 25.71, -44.21)
CIE-LCH	lch(42.94, 51.14, 300.18°)
OKLab	oklab(51.84% 0.0366 -0.1253)
OKLCH	oklch(51.84% 0.131 286.3)
XYZ	xyz(16.6474, 13.1162, 42.2037)
Luminance	0.1312 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645AAF #A5AF5A

analogous

#5A7BAF #645AAF #8F5AAF

triadic

#645AAF #AF645A #5AAF64

tetradic

#645AAF #AF5A7B #A5AF5A #5AAF8F

square

#645AAF #AF5A7B #A5AF5A #5AAF8F

split-complementary

#645AAF #AF8F5A #7BAF5A

monochromatic

#342F60 #4B4389 #645AAF #8B83C3 #B1ACD7

Accessibility & contrast

On white

5.80

#645AAF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.62

#645AAF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645AAF

5.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645AAF	#FFFFFF	#000000	##FFFFFF
##645AAF	1.00	5.80	3.62	5.80
#FFFFFF	5.80	1.00	21.00	1.00
#000000	3.62	21.00	1.00	21.00
##FFFFFF	5.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3868B2

Deuteranopia (green-blind)

#3663AD

Tritanopia (blue-blind)

#4E6B7C

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #645aaf;
/* rgb */ color: rgb(100, 90, 175);
/* oklch */ color: oklch(51.8% 0.131 286.3);

Tailwind

colors: {
  custom: {
    50: '#9488c7',
    500: '#645aaf',
    950: '#000000',
  },
}

SCSS

$custom: #645aaf;
$custom-light: #9488c7;
$custom-dark: #000000;

JSON

{
  "hex": "#645aaf",
  "rgb": {
    "r": 100,
    "g": 90,
    "b": 175
  },
  "hsl": {
    "h": 247.059,
    "s": 34.694,
    "l": 51.961
  },
  "oklch": {
    "l": 0.51836,
    "c": 0.13052,
    "h": 286.3
  },
  "luminance": 0.13117
}

Semantic roles & 50–950 ramp

primary

#645AAF

secondary

#C1C5A0

accent

#CB5DBE

background

#F9F8FC

surface

#F2F0F8

border

#CCCBD1

text

#0D0B13

muted

#7E7C82

Preview Lab

Preview with #645AAF

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

Preview Lab → · Contrast checker → · Palette generator →