#645DA5#645DA5

#645DA5 is a mid, moderate blue. Relative luminance 0.133; OKLCH L 51.8% C 0.112 H 286.3°. Best body text is #FFFFFF at 5.75:1 contrast (WCAG AA passes).

Color values

HEX	#645DA5
RGB	rgb(100, 93, 165)
HSL	hsl(246, 29%, 51%)
HSV	hsv(246, 44%, 65%)
CMYK	cmyk(39.4%, 43.6%, 0%, 35.3%)
CIE-LAB	lab(43.14, 20.91, -37.98)
CIE-LCH	lch(43.14, 43.36, 298.84°)
OKLab	oklab(51.81% 0.0312 -0.107)
OKLCH	oklch(51.81% 0.112 286.3)
XYZ	xyz(15.9595, 13.2541, 37.3074)
Luminance	0.1326 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645DA5 #9EA55D

analogous

#5D7AA5 #645DA5 #885DA5

triadic

#645DA5 #A5645D #5DA564

tetradic

#645DA5 #A55D7A #9EA55D #5DA588

square

#645DA5 #A55D7A #9EA55D #5DA588

split-complementary

#645DA5 #A5885D #7AA55D

monochromatic

#343057 #4C467F #645DA5 #8A84BB #AFACD1

Accessibility & contrast

On white

5.75

#645DA5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.65

#645DA5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645DA5

5.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645DA5	#FFFFFF	#000000	##FFFFFF
##645DA5	1.00	5.75	3.65	5.75
#FFFFFF	5.75	1.00	21.00	1.00
#000000	3.65	21.00	1.00	21.00
##FFFFFF	5.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4468A8

Deuteranopia (green-blind)

#4264A3

Tritanopia (blue-blind)

#526B79

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #645da5;
/* rgb */ color: rgb(100, 93, 165);
/* oklch */ color: oklch(51.8% 0.112 286.3);

Tailwind

colors: {
  custom: {
    50: '#938bc0',
    500: '#645da5',
    950: '#000000',
  },
}

SCSS

$custom: #645da5;
$custom-light: #938bc0;
$custom-dark: #000000;

JSON

{
  "hex": "#645da5",
  "rgb": {
    "r": 100,
    "g": 93,
    "b": 165
  },
  "hsl": {
    "h": 245.833,
    "s": 28.571,
    "l": 50.588
  },
  "oklch": {
    "l": 0.51808,
    "c": 0.11151,
    "h": 286.3
  },
  "luminance": 0.13255
}

Semantic roles & 50–950 ramp

primary

#645DA5

secondary

#BCBF9F

accent

#C563BB

background

#F9F8FB

surface

#F2F0F7

border

#CCCBD0

text

#0D0C12

muted

#7E7D81

Preview Lab

Preview with #645DA5

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

Preview Lab → · Contrast checker → · Palette generator →