#645BD5#645BD5

#645BD5 is a mid, vivid blue. Relative luminance 0.150; OKLCH L 54.6% C 0.181 H 281.9°. Best body text is #FFFFFF at 5.25:1 contrast (WCAG AA passes).

Color values

HEX	#645BD5
RGB	rgb(100, 91, 213)
HSL	hsl(244, 59%, 60%)
HSV	hsv(244, 57%, 84%)
CMYK	cmyk(53.1%, 57.3%, 0%, 16.5%)
CIE-LAB	lab(45.63, 36.66, -61.91)
CIE-LCH	lch(45.63, 71.95, 300.63°)
OKLab	oklab(54.62% 0.0374 -0.1773)
OKLCH	oklch(54.62% 0.181 281.9)
XYZ	xyz(21.0032, 14.9944, 64.7254)
Luminance	0.1500 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645BD5 #CCD55B

analogous

#5B8FD5 #645BD5 #A15BD5

triadic

#645BD5 #D5645B #5BD564

tetradic

#645BD5 #D55B8F #CCD55B #5BD5A1

square

#645BD5 #D55B8F #CCD55B #5BD5A1

split-complementary

#645BD5 #D5A15B #8FD55B

monochromatic

#2D2591 #3C32C1 #645BD5 #928CE1 #C0BCEE

Accessibility & contrast

On white

5.25

#645BD5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.00

#645BD5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645BD5

5.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645BD5	#FFFFFF	#000000	##FFFFFF
##645BD5	1.00	5.25	4.00	5.25
#FFFFFF	5.25	1.00	21.00	1.00
#000000	4.00	21.00	1.00	21.00
##FFFFFF	5.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0070D9

Deuteranopia (green-blind)

#0068D2

Tritanopia (blue-blind)

#33778F

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #645bd5;
/* rgb */ color: rgb(100, 91, 213);
/* oklch */ color: oklch(54.6% 0.181 281.9);

Tailwind

colors: {
  custom: {
    50: '#998ae3',
    500: '#645bd5',
    950: '#000000',
  },
}

SCSS

$custom: #645bd5;
$custom-light: #998ae3;
$custom-dark: #000000;

JSON

{
  "hex": "#645bd5",
  "rgb": {
    "r": 100,
    "g": 91,
    "b": 213
  },
  "hsl": {
    "h": 244.426,
    "s": 59.223,
    "l": 59.608
  },
  "oklch": {
    "l": 0.54624,
    "c": 0.1812,
    "h": 281.9
  },
  "luminance": 0.14996
}

Semantic roles & 50–950 ramp

primary

#645BD5

secondary

#DADEAE

accent

#E245D7

background

#F9F8FE

surface

#F2F0FC

border

#CCCBD5

text

#0F0B15

muted

#7E7C84

Preview Lab

Preview with #645BD5

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

Preview Lab → · Contrast checker → · Palette generator →