#645FA3#645FA3

#645FA3 is a mid, moderate blue. Relative luminance 0.135; OKLCH L 52.1% C 0.105 H 285.5°. Best body text is #FFFFFF at 5.66:1 contrast (WCAG AA passes).

Color values

HEX	#645FA3
RGB	rgb(100, 95, 163)
HSL	hsl(244, 27%, 51%)
HSV	hsv(244, 42%, 64%)
CMYK	cmyk(38.7%, 41.7%, 0%, 36.1%)
CIE-LAB	lab(43.56, 19.09, -36.13)
CIE-LCH	lch(43.56, 40.87, 297.85°)
OKLab	oklab(52.09% 0.0281 -0.1017)
OKLCH	oklch(52.09% 0.105 285.5)
XYZ	xyz(15.9568, 13.5376, 36.4155)
Luminance	0.1354 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645FA3 #9EA35F

analogous

#5F7CA3 #645FA3 #865FA3

triadic

#645FA3 #A3645F #5FA364

tetradic

#645FA3 #A35F7C #9EA35F #5FA386

square

#645FA3 #A35F7C #9EA35F #5FA386

split-complementary

#645FA3 #A3865F #7CA35F

monochromatic

#343256 #4C487D #645FA3 #8A86B9 #AFADD0

Accessibility & contrast

On white

5.66

#645FA3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.71

#645FA3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645FA3

5.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645FA3	#FFFFFF	#000000	##FFFFFF
##645FA3	1.00	5.66	3.71	5.66
#FFFFFF	5.66	1.00	21.00	1.00
#000000	3.71	21.00	1.00	21.00
##FFFFFF	5.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4869A6

Deuteranopia (green-blind)

#4665A1

Tritanopia (blue-blind)

#536C79

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #645fa3;
/* rgb */ color: rgb(100, 95, 163);
/* oklch */ color: oklch(52.1% 0.105 285.5);

Tailwind

colors: {
  custom: {
    50: '#938cbe',
    500: '#645fa3',
    950: '#000000',
  },
}

SCSS

$custom: #645fa3;
$custom-light: #938cbe;
$custom-dark: #000000;

JSON

{
  "hex": "#645fa3",
  "rgb": {
    "r": 100,
    "g": 95,
    "b": 163
  },
  "hsl": {
    "h": 244.412,
    "s": 26.984,
    "l": 50.588
  },
  "oklch": {
    "l": 0.52091,
    "c": 0.10548,
    "h": 285.5
  },
  "luminance": 0.13538
}

Semantic roles & 50–950 ramp

primary

#645FA3

secondary

#BCBEA0

accent

#C364BC

background

#F9F8FB

surface

#F1F0F7

border

#CBCBD0

text

#0D0C12

muted

#7E7D81

Preview Lab

Preview with #645FA3

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

Preview Lab → · Contrast checker → · Palette generator →