#645FD3#645FD3

#645FD3 is a mid, vivid blue. Relative luminance 0.156; OKLCH L 55.2% C 0.173 H 281.0°. Best body text is #FFFFFF at 5.10:1 contrast (WCAG AA passes).

Color values

HEX	#645FD3
RGB	rgb(100, 95, 211)
HSL	hsl(243, 57%, 60%)
HSV	hsv(243, 55%, 83%)
CMYK	cmyk(52.6%, 55%, 0%, 17.3%)
CIE-LAB	lab(46.44, 33.62, -59.45)
CIE-LCH	lch(46.44, 68.30, 299.49°)
OKLab	oklab(55.18% 0.0331 -0.1701)
OKLCH	oklch(55.18% 0.173 281)
XYZ	xyz(21.1020, 15.5956, 63.5137)
Luminance	0.1560 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645FD3 #CED35F

analogous

#5F94D3 #645FD3 #9E5FD3

triadic

#645FD3 #D3645F #5FD364

tetradic

#645FD3 #D35F94 #CED35F #5FD39E

square

#645FD3 #D35F94 #CED35F #5FD39E

split-complementary

#645FD3 #D39E5F #94D35F

monochromatic

#2C2890 #3B35C0 #645FD3 #928FE0 #C1BFED

Accessibility & contrast

On white

5.10

#645FD3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.12

#645FD3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645FD3

5.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645FD3	#FFFFFF	#000000	##FFFFFF
##645FD3	1.00	5.10	4.12	5.10
#FFFFFF	5.10	1.00	21.00	1.00
#000000	4.12	21.00	1.00	21.00
##FFFFFF	5.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1372D7

Deuteranopia (green-blind)

#006AD1

Tritanopia (blue-blind)

#347990

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #645fd3;
/* rgb */ color: rgb(100, 95, 211);
/* oklch */ color: oklch(55.2% 0.173 281.0);

Tailwind

colors: {
  custom: {
    50: '#988ce1',
    500: '#645fd3',
    950: '#000000',
  },
}

SCSS

$custom: #645fd3;
$custom-light: #988ce1;
$custom-dark: #000000;

JSON

{
  "hex": "#645fd3",
  "rgb": {
    "r": 100,
    "g": 95,
    "b": 211
  },
  "hsl": {
    "h": 242.586,
    "s": 56.863,
    "l": 60
  },
  "oklch": {
    "l": 0.55183,
    "c": 0.17326,
    "h": 281
  },
  "luminance": 0.15597
}

Semantic roles & 50–950 ramp

primary

#645FD3

secondary

#DBDDB1

accent

#E048DA

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0F0C15

muted

#7E7D83

Preview Lab

Preview with #645FD3

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

Preview Lab → · Contrast checker → · Palette generator →