#645FA4#645FA4

#645FA4 is a mid, moderate blue. Relative luminance 0.136; OKLCH L 52.1% C 0.107 H 285.4°. Best body text is #FFFFFF at 5.65:1 contrast (WCAG AA passes).

Color values

HEX	#645FA4
RGB	rgb(100, 95, 164)
HSL	hsl(244, 27%, 51%)
HSV	hsv(244, 42%, 64%)
CMYK	cmyk(39%, 42.1%, 0%, 35.7%)
CIE-LAB	lab(43.62, 19.38, -36.64)
CIE-LCH	lch(43.62, 41.45, 297.88°)
OKLab	oklab(52.15% 0.0283 -0.1031)
OKLCH	oklch(52.15% 0.107 285.4)
XYZ	xyz(16.0467, 13.5735, 36.8892)
Luminance	0.1357 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645FA4 #9FA45F

analogous

#5F7CA4 #645FA4 #865FA4

triadic

#645FA4 #A4645F #5FA464

tetradic

#645FA4 #A45F7C #9FA45F #5FA486

square

#645FA4 #A45F7C #9FA45F #5FA486

split-complementary

#645FA4 #A4865F #7CA45F

monochromatic

#343257 #4C487E #645FA4 #8A86BA #B0ADD0

Accessibility & contrast

On white

5.65

#645FA4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.71

#645FA4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645FA4

5.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645FA4	#FFFFFF	#000000	##FFFFFF
##645FA4	1.00	5.65	3.71	5.65
#FFFFFF	5.65	1.00	21.00	1.00
#000000	3.71	21.00	1.00	21.00
##FFFFFF	5.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4769A7

Deuteranopia (green-blind)

#4665A2

Tritanopia (blue-blind)

#526C79

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #645fa4;
/* rgb */ color: rgb(100, 95, 164);
/* oklch */ color: oklch(52.1% 0.107 285.4);

Tailwind

colors: {
  custom: {
    50: '#938cbf',
    500: '#645fa4',
    950: '#000000',
  },
}

SCSS

$custom: #645fa4;
$custom-light: #938cbf;
$custom-dark: #000000;

JSON

{
  "hex": "#645fa4",
  "rgb": {
    "r": 100,
    "g": 95,
    "b": 164
  },
  "hsl": {
    "h": 244.348,
    "s": 27.49,
    "l": 50.784
  },
  "oklch": {
    "l": 0.52149,
    "c": 0.10696,
    "h": 285.4
  },
  "luminance": 0.13574
}

Semantic roles & 50–950 ramp

primary

#645FA4

secondary

#BCBFA0

accent

#C464BD

background

#F9F8FB

surface

#F1F0F7

border

#CBCBD0

text

#0D0C12

muted

#7E7D81

Preview Lab

Preview with #645FA4

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

Preview Lab → · Contrast checker → · Palette generator →