#645AFF#645AFF

#645AFF is a mid, highly saturated blue. Relative luminance 0.172; OKLCH L 57.8% C 0.236 H 278.7°. Best body text is #FFFFFF at 4.72:1 contrast (WCAG AA passes).

Color values

HEX	#645AFF
RGB	rgb(100, 90, 255)
HSL	hsl(244, 100%, 68%)
HSV	hsv(244, 65%, 100%)
CMYK	cmyk(60.8%, 64.7%, 0%, 0%)
CIE-LAB	lab(48.56, 50.23, -80.80)
CIE-LCH	lch(48.56, 95.14, 301.87°)
OKLab	oklab(57.76% 0.0358 -0.2328)
OKLCH	oklch(57.76% 0.236 278.7)
XYZ	xyz(26.9559, 17.2396, 96.4954)
Luminance	0.1724 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645AFF #F5FF5A

analogous

#5AA3FF #645AFF #B65AFF

triadic

#645AFF #FF645A #5AFF64

tetradic

#645AFF #FF5AA3 #F5FF5A #5AFFB6

square

#645AFF #FF5AA3 #F5FF5A #5AFFB6

split-complementary

#645AFF #FFB65A #A3FF5A

monochromatic

#0D00DF #2B1DFF #645AFF #9D97FF #D7D4FF

Accessibility & contrast

On white

4.72

#645AFF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.45

#645AFF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645AFF

4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645AFF	#FFFFFF	#000000	##FFFFFF
##645AFF	1.00	4.72	4.45	4.72
#FFFFFF	4.72	1.00	21.00	1.00
#000000	4.45	21.00	1.00	21.00
##FFFFFF	4.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#007AFF

Deuteranopia (green-blind)

#006DFC

Tritanopia (blue-blind)

#0085A5

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #645aff;
/* rgb */ color: rgb(100, 90, 255);
/* oklch */ color: oklch(57.8% 0.236 278.7);

Tailwind

colors: {
  custom: {
    50: '#9f8aff',
    500: '#645aff',
    950: '#000000',
  },
}

SCSS

$custom: #645aff;
$custom-light: #9f8aff;
$custom-dark: #000000;

JSON

{
  "hex": "#645aff",
  "rgb": {
    "r": 100,
    "g": 90,
    "b": 255
  },
  "hsl": {
    "h": 243.636,
    "s": 100,
    "l": 67.647
  },
  "oklch": {
    "l": 0.57759,
    "c": 0.23555,
    "h": 278.7
  },
  "luminance": 0.17242
}

Semantic roles & 50–950 ramp

primary

#645AFF

secondary

#F1F4C1

accent

#E600D8

background

#FAF8FF

surface

#F4F0FF

border

#CECBD7

text

#100C18

muted

#7F7D86

Preview Lab

Preview with #645AFF

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

Preview Lab → · Contrast checker → · Palette generator →