#645BD3#645BD3

#645BD3 is a mid, vivid blue. Relative luminance 0.149; OKLCH L 54.5% C 0.179 H 282.1°. Best body text is #FFFFFF at 5.28:1 contrast (WCAG AA passes).

Color values

HEX	#645BD3
RGB	rgb(100, 91, 211)
HSL	hsl(245, 58%, 59%)
HSV	hsv(245, 57%, 83%)
CMYK	cmyk(52.6%, 56.9%, 0%, 17.3%)
CIE-LAB	lab(45.49, 36.04, -60.99)
CIE-LCH	lch(45.49, 70.84, 300.58°)
OKLab	oklab(54.48% 0.0374 -0.1746)
OKLCH	oklch(54.48% 0.179 282.1)
XYZ	xyz(20.7509, 14.8934, 63.3967)
Luminance	0.1489 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645BD3 #CAD35B

analogous

#5B8ED3 #645BD3 #A05BD3

triadic

#645BD3 #D3645B #5BD364

tetradic

#645BD3 #D35B8E #CAD35B #5BD3A0

square

#645BD3 #D35B8E #CAD35B #5BD3A0

split-complementary

#645BD3 #D3A05B #8ED35B

monochromatic

#2E268E #3D33BE #645BD3 #928BE0 #BFBCED

Accessibility & contrast

On white

5.28

#645BD3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.98

#645BD3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645BD3

5.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645BD3	#FFFFFF	#000000	##FFFFFF
##645BD3	1.00	5.28	3.98	5.28
#FFFFFF	5.28	1.00	21.00	1.00
#000000	3.98	21.00	1.00	21.00
##FFFFFF	5.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0070D7

Deuteranopia (green-blind)

#0067D0

Tritanopia (blue-blind)

#35778E

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #645bd3;
/* rgb */ color: rgb(100, 91, 211);
/* oklch */ color: oklch(54.5% 0.179 282.1);

Tailwind

colors: {
  custom: {
    50: '#998ae1',
    500: '#645bd3',
    950: '#000000',
  },
}

SCSS

$custom: #645bd3;
$custom-light: #998ae1;
$custom-dark: #000000;

JSON

{
  "hex": "#645bd3",
  "rgb": {
    "r": 100,
    "g": 91,
    "b": 211
  },
  "hsl": {
    "h": 244.5,
    "s": 57.692,
    "l": 59.216
  },
  "oklch": {
    "l": 0.54477,
    "c": 0.17856,
    "h": 282.1
  },
  "luminance": 0.14895
}

Semantic roles & 50–950 ramp

primary

#645BD3

secondary

#D9DCAD

accent

#E147D5

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0F0B15

muted

#7E7C83

Preview Lab

Preview with #645BD3

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

Preview Lab → · Contrast checker → · Palette generator →