#645BBC#645BBC

#645BBC is a mid, vivid blue. Relative luminance 0.138; OKLCH L 52.9% C 0.147 H 284.4°. Best body text is #FFFFFF at 5.58:1 contrast (WCAG AA passes).

Color values

HEX	#645BBC
RGB	rgb(100, 91, 188)
HSL	hsl(246, 42%, 55%)
HSV	hsv(246, 52%, 74%)
CMYK	cmyk(46.8%, 51.6%, 0%, 26.3%)
CIE-LAB	lab(43.98, 28.99, -50.15)
CIE-LCH	lch(43.98, 57.93, 300.03°)
OKLab	oklab(52.87% 0.0366 -0.1427)
OKLCH	oklch(52.87% 0.147 284.4)
XYZ	xyz(18.0710, 13.8215, 49.2828)
Luminance	0.1382 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645BBC #B3BC5B

analogous

#5B83BC #645BBC #955BBC

triadic

#645BBC #BC645B #5BBC64

tetradic

#645BBC #BC5B83 #B3BC5B #5BBC95

square

#645BBC #BC5B83 #B3BC5B #5BBC95

split-complementary

#645BBC #BC955B #83BC5B

monochromatic

#342D6F #483F9B #645BBC #8D86CE #B6B2E0

Accessibility & contrast

On white

5.58

#645BBC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.76

#645BBC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645BBC

5.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645BBC	#FFFFFF	#000000	##FFFFFF
##645BBC	1.00	5.58	3.76	5.58
#FFFFFF	5.58	1.00	21.00	1.00
#000000	3.76	21.00	1.00	21.00
##FFFFFF	5.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D6BBF

Deuteranopia (green-blind)

#2965BA

Tritanopia (blue-blind)

#467083

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #645bbc;
/* rgb */ color: rgb(100, 91, 188);
/* oklch */ color: oklch(52.9% 0.147 284.4);

Tailwind

colors: {
  custom: {
    50: '#9689d1',
    500: '#645bbc',
    950: '#000000',
  },
}

SCSS

$custom: #645bbc;
$custom-light: #9689d1;
$custom-dark: #000000;

JSON

{
  "hex": "#645bbc",
  "rgb": {
    "r": 100,
    "g": 91,
    "b": 188
  },
  "hsl": {
    "h": 245.567,
    "s": 41.991,
    "l": 54.706
  },
  "oklch": {
    "l": 0.52869,
    "c": 0.14734,
    "h": 284.4
  },
  "luminance": 0.13822
}

Semantic roles & 50–950 ramp

primary

#645BBC

secondary

#CACEA5

accent

#D256C6

background

#F9F8FC

surface

#F2F0F9

border

#CCCBD2

text

#0E0B14

muted

#7E7C82

Preview Lab

Preview with #645BBC

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

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