#645BDE#645BDE

#645BDE is a mid, vivid blue. Relative luminance 0.155; OKLCH L 55.3% C 0.193 H 281.1°. Best body text is #FFFFFF at 5.13:1 contrast (WCAG AA passes).

Color values

HEX	#645BDE
RGB	rgb(100, 91, 222)
HSL	hsl(244, 66%, 61%)
HSV	hsv(244, 59%, 87%)
CMYK	cmyk(55%, 59%, 0%, 12.9%)
CIE-LAB	lab(46.26, 39.44, -66.01)
CIE-LCH	lch(46.26, 76.89, 300.86°)
OKLab	oklab(55.3% 0.0372 -0.1894)
OKLCH	oklch(55.3% 0.193 281.1)
XYZ	xyz(22.1773, 15.4640, 70.9093)
Luminance	0.1547 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645BDE #D5DE5B

analogous

#5B94DE #645BDE #A65BDE

triadic

#645BDE #DE645B #5BDE64

tetradic

#645BDE #DE5B94 #D5DE5B #5BDEA6

square

#645BDE #DE5B94 #D5DE5B #5BDEA6

split-complementary

#645BDE #DEA65B #94DE5B

monochromatic

#29209F #362AD2 #645BDE #948EE8 #C4C1F3

Accessibility & contrast

On white

5.13

#645BDE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.09

#645BDE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645BDE

5.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645BDE	#FFFFFF	#000000	##FFFFFF
##645BDE	1.00	5.13	4.09	5.13
#FFFFFF	5.13	1.00	21.00	1.00
#000000	4.09	21.00	1.00	21.00
##FFFFFF	5.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0072E2

Deuteranopia (green-blind)

#0069DB

Tritanopia (blue-blind)

#287A94

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #645bde;
/* rgb */ color: rgb(100, 91, 222);
/* oklch */ color: oklch(55.3% 0.193 281.1);

Tailwind

colors: {
  custom: {
    50: '#9a8ae9',
    500: '#645bde',
    950: '#000000',
  },
}

SCSS

$custom: #645bde;
$custom-light: #9a8ae9;
$custom-dark: #000000;

JSON

{
  "hex": "#645bde",
  "rgb": {
    "r": 100,
    "g": 91,
    "b": 222
  },
  "hsl": {
    "h": 244.122,
    "s": 66.497,
    "l": 61.373
  },
  "oklch": {
    "l": 0.55295,
    "c": 0.19298,
    "h": 281.1
  },
  "luminance": 0.15465
}

Semantic roles & 50–950 ramp

primary

#645BDE

secondary

#E0E3B2

accent

#CE17C2

background

#FAF8FE

surface

#F3F0FD

border

#CDCBD5

text

#0F0B16

muted

#7F7C84

Preview Lab

Preview with #645BDE

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

Preview Lab → · Contrast checker → · Palette generator →