#645FA6#645FA6

#645FA6 is a mid, moderate blue. Relative luminance 0.136; OKLCH L 52.3% C 0.110 H 285.1°. Best body text is #FFFFFF at 5.63:1 contrast (WCAG AA passes).

Color values

HEX	#645FA6
RGB	rgb(100, 95, 166)
HSL	hsl(244, 29%, 51%)
HSV	hsv(244, 43%, 65%)
CMYK	cmyk(39.8%, 42.8%, 0%, 34.9%)
CIE-LAB	lab(43.72, 19.97, -37.66)
CIE-LCH	lch(43.72, 42.62, 297.93°)
OKLab	oklab(52.26% 0.0287 -0.1061)
OKLCH	oklch(52.26% 0.11 285.1)
XYZ	xyz(16.2287, 13.6463, 37.8479)
Luminance	0.1365 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645FA6 #A1A65F

analogous

#5F7DA6 #645FA6 #875FA6

triadic

#645FA6 #A6645F #5FA664

tetradic

#645FA6 #A65F7D #A1A65F #5FA687

square

#645FA6 #A65F7D #A1A65F #5FA687

split-complementary

#645FA6 #A6875F #7DA65F

monochromatic

#343259 #4B4780 #645FA6 #8A86BC #B0AED2

Accessibility & contrast

On white

5.63

#645FA6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.73

#645FA6 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645FA6

5.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645FA6	#FFFFFF	#000000	##FFFFFF
##645FA6	1.00	5.63	3.73	5.63
#FFFFFF	5.63	1.00	21.00	1.00
#000000	3.73	21.00	1.00	21.00
##FFFFFF	5.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4669A9

Deuteranopia (green-blind)

#4465A4

Tritanopia (blue-blind)

#516D7A

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #645fa6;
/* rgb */ color: rgb(100, 95, 166);
/* oklch */ color: oklch(52.3% 0.110 285.1);

Tailwind

colors: {
  custom: {
    50: '#938cc1',
    500: '#645fa6',
    950: '#000000',
  },
}

SCSS

$custom: #645fa6;
$custom-light: #938cc1;
$custom-dark: #000000;

JSON

{
  "hex": "#645fa6",
  "rgb": {
    "r": 100,
    "g": 95,
    "b": 166
  },
  "hsl": {
    "h": 244.225,
    "s": 28.514,
    "l": 51.176
  },
  "oklch": {
    "l": 0.52264,
    "c": 0.10991,
    "h": 285.1
  },
  "luminance": 0.13647
}

Semantic roles & 50–950 ramp

primary

#645FA6

secondary

#BEC0A1

accent

#C563BE

background

#F9F8FB

surface

#F2F0F7

border

#CCCBD0

text

#0D0C12

muted

#7E7D81

Preview Lab

Preview with #645FA6

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

Preview Lab → · Contrast checker → · Palette generator →