#645BC3#645BC3

#645BC3 is a mid, vivid blue. Relative luminance 0.141; OKLCH L 53.3% C 0.157 H 283.6°. Best body text is #FFFFFF at 5.49:1 contrast (WCAG AA passes).

Color values

HEX	#645BC3
RGB	rgb(100, 91, 195)
HSL	hsl(245, 46%, 56%)
HSV	hsv(245, 53%, 76%)
CMYK	cmyk(48.7%, 53.3%, 0%, 23.5%)
CIE-LAB	lab(44.42, 31.12, -53.50)
CIE-LCH	lch(44.42, 61.90, 300.18°)
OKLab	oklab(53.34% 0.037 -0.1526)
OKLCH	oklch(53.34% 0.157 283.6)
XYZ	xyz(18.8440, 14.1307, 53.3538)
Luminance	0.1413 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645BC3 #BAC35B

analogous

#5B86C3 #645BC3 #985BC3

triadic

#645BC3 #C3645B #5BC364

tetradic

#645BC3 #C35B86 #BAC35B #5BC398

square

#645BC3 #C35B86 #BAC35B #5BC398

split-complementary

#645BC3 #C3985B #86C35B

monochromatic

#322C78 #453CA5 #645BC3 #8E88D3 #B9B5E4

Accessibility & contrast

On white

5.49

#645BC3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.83

#645BC3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645BC3

5.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645BC3	#FFFFFF	#000000	##FFFFFF
##645BC3	1.00	5.49	3.83	5.49
#FFFFFF	5.49	1.00	21.00	1.00
#000000	3.83	21.00	1.00	21.00
##FFFFFF	5.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#246CC7

Deuteranopia (green-blind)

#1D66C1

Tritanopia (blue-blind)

#427286

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #645bc3;
/* rgb */ color: rgb(100, 91, 195);
/* oklch */ color: oklch(53.3% 0.157 283.6);

Tailwind

colors: {
  custom: {
    50: '#9689d6',
    500: '#645bc3',
    950: '#000000',
  },
}

SCSS

$custom: #645bc3;
$custom-light: #9689d6;
$custom-dark: #000000;

JSON

{
  "hex": "#645bc3",
  "rgb": {
    "r": 100,
    "g": 91,
    "b": 195
  },
  "hsl": {
    "h": 245.192,
    "s": 46.429,
    "l": 56.078
  },
  "oklch": {
    "l": 0.53343,
    "c": 0.157,
    "h": 283.6
  },
  "luminance": 0.14132
}

Semantic roles & 50–950 ramp

primary

#645BC3

secondary

#CFD2A7

accent

#D652CB

background

#F9F8FD

surface

#F2F0FA

border

#CCCBD3

text

#0E0B14

muted

#7E7C83

Preview Lab

Preview with #645BC3

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

Preview Lab → · Contrast checker → · Palette generator →