#645FA5#645FA5

#645FA5 is a mid, moderate blue. Relative luminance 0.136; OKLCH L 52.2% C 0.108 H 285.2°. Best body text is #FFFFFF at 5.64:1 contrast (WCAG AA passes).

Color values

HEX	#645FA5
RGB	rgb(100, 95, 165)
HSL	hsl(244, 28%, 51%)
HSV	hsv(244, 42%, 65%)
CMYK	cmyk(39.4%, 42.4%, 0%, 35.3%)
CIE-LAB	lab(43.67, 19.68, -37.15)
CIE-LCH	lch(43.67, 42.04, 297.91°)
OKLab	oklab(52.21% 0.0285 -0.1046)
OKLCH	oklch(52.21% 0.108 285.2)
XYZ	xyz(16.1374, 13.6098, 37.3667)
Luminance	0.1361 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645FA5 #A0A55F

analogous

#5F7DA5 #645FA5 #875FA5

triadic

#645FA5 #A5645F #5FA564

tetradic

#645FA5 #A55F7D #A0A55F #5FA587

square

#645FA5 #A55F7D #A0A55F #5FA587

split-complementary

#645FA5 #A5875F #7DA55F

monochromatic

#343258 #4C487F #645FA5 #8A86BB #B0ADD1

Accessibility & contrast

On white

5.64

#645FA5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.72

#645FA5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645FA5

5.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645FA5	#FFFFFF	#000000	##FFFFFF
##645FA5	1.00	5.64	3.72	5.64
#FFFFFF	5.64	1.00	21.00	1.00
#000000	3.72	21.00	1.00	21.00
##FFFFFF	5.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4769A8

Deuteranopia (green-blind)

#4565A3

Tritanopia (blue-blind)

#526D7A

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #645fa5;
/* rgb */ color: rgb(100, 95, 165);
/* oklch */ color: oklch(52.2% 0.108 285.2);

Tailwind

colors: {
  custom: {
    50: '#938cc0',
    500: '#645fa5',
    950: '#000000',
  },
}

SCSS

$custom: #645fa5;
$custom-light: #938cc0;
$custom-dark: #000000;

JSON

{
  "hex": "#645fa5",
  "rgb": {
    "r": 100,
    "g": 95,
    "b": 165
  },
  "hsl": {
    "h": 244.286,
    "s": 28,
    "l": 50.98
  },
  "oklch": {
    "l": 0.52206,
    "c": 0.10844,
    "h": 285.2
  },
  "luminance": 0.1361
}

Semantic roles & 50–950 ramp

primary

#645FA5

secondary

#BDBFA0

accent

#C463BD

background

#F9F8FB

surface

#F2F0F7

border

#CCCBD0

text

#0D0C12

muted

#7E7D81

Preview Lab

Preview with #645FA5

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

Preview Lab → · Contrast checker → · Palette generator →