#645DB8#645DB8

#645DB8 is a mid, vivid blue. Relative luminance 0.140; OKLCH L 53.0% C 0.139 H 284.1°. Best body text is #FFFFFF at 5.53:1 contrast (WCAG AA passes).

Color values

HEX	#645DB8
RGB	rgb(100, 93, 184)
HSL	hsl(245, 39%, 54%)
HSV	hsv(245, 49%, 72%)
CMYK	cmyk(45.7%, 49.5%, 0%, 27.8%)
CIE-LAB	lab(44.23, 26.55, -47.41)
CIE-LCH	lch(44.23, 54.34, 299.25°)
OKLab	oklab(52.98% 0.0338 -0.1347)
OKLCH	oklch(52.98% 0.139 284.1)
XYZ	xyz(17.8191, 13.9979, 47.1011)
Luminance	0.1400 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645DB8 #B1B85D

analogous

#5D84B8 #645DB8 #925DB8

triadic

#645DB8 #B8645D #5DB864

tetradic

#645DB8 #B85D84 #B1B85D #5DB892

square

#645DB8 #B85D84 #B1B85D #5DB892

split-complementary

#645DB8 #B8925D #84B85D

monochromatic

#342F6B #484296 #645DB8 #8D88CB #B5B2DD

Accessibility & contrast

On white

5.53

#645DB8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.80

#645DB8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645DB8

5.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645DB8	#FFFFFF	#000000	##FFFFFF
##645DB8	1.00	5.53	3.80	5.53
#FFFFFF	5.53	1.00	21.00	1.00
#000000	3.80	21.00	1.00	21.00
##FFFFFF	5.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#366BBB

Deuteranopia (green-blind)

#3266B6

Tritanopia (blue-blind)

#497082

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #645db8;
/* rgb */ color: rgb(100, 93, 184);
/* oklch */ color: oklch(53.0% 0.139 284.1);

Tailwind

colors: {
  custom: {
    50: '#958bce',
    500: '#645db8',
    950: '#000000',
  },
}

SCSS

$custom: #645db8;
$custom-light: #958bce;
$custom-dark: #000000;

JSON

{
  "hex": "#645db8",
  "rgb": {
    "r": 100,
    "g": 93,
    "b": 184
  },
  "hsl": {
    "h": 244.615,
    "s": 39.056,
    "l": 54.314
  },
  "oklch": {
    "l": 0.52981,
    "c": 0.13885,
    "h": 284.1
  },
  "luminance": 0.13999
}

Semantic roles & 50–950 ramp

primary

#645DB8

secondary

#C9CCA5

accent

#CF59C6

background

#F9F8FC

surface

#F2F0F9

border

#CCCBD2

text

#0E0C13

muted

#7E7D82

Preview Lab

Preview with #645DB8

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

Preview Lab → · Contrast checker → · Palette generator →