#645DCF#645DCF

#645DCF is a mid, vivid blue. Relative luminance 0.150; OKLCH L 54.5% C 0.171 H 281.9°. Best body text is #FFFFFF at 5.24:1 contrast (WCAG AA passes).

Color values

HEX	#645DCF
RGB	rgb(100, 93, 207)
HSL	hsl(244, 54%, 59%)
HSV	hsv(244, 55%, 81%)
CMYK	cmyk(51.7%, 55.1%, 0%, 18.8%)
CIE-LAB	lab(45.69, 33.59, -58.37)
CIE-LCH	lch(45.69, 67.35, 299.92°)
OKLab	oklab(54.54% 0.0352 -0.1669)
OKLCH	oklch(54.54% 0.171 281.9)
XYZ	xyz(20.4289, 15.0419, 60.8463)
Luminance	0.1504 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645DCF #C8CF5D

analogous

#5D8FCF #645DCF #9D5DCF

triadic

#645DCF #CF645D #5DCF64

tetradic

#645DCF #CF5D8F #C8CF5D #5DCF9D

square

#645DCF #CF5D8F #C8CF5D #5DCF9D

split-complementary

#645DCF #CF9D5D #8FCF5D

monochromatic

#2F2989 #3F37B8 #645DCF #918CDD #BEBBEB

Accessibility & contrast

On white

5.24

#645DCF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.01

#645DCF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645DCF

5.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645DCF	#FFFFFF	#000000	##FFFFFF
##645DCF	1.00	5.24	4.01	5.24
#FFFFFF	5.24	1.00	21.00	1.00
#000000	4.01	21.00	1.00	21.00
##FFFFFF	5.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1470D3

Deuteranopia (green-blind)

#0068CD

Tritanopia (blue-blind)

#38778D

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #645dcf;
/* rgb */ color: rgb(100, 93, 207);
/* oklch */ color: oklch(54.5% 0.171 281.9);

Tailwind

colors: {
  custom: {
    50: '#988bde',
    500: '#645dcf',
    950: '#000000',
  },
}

SCSS

$custom: #645dcf;
$custom-light: #988bde;
$custom-dark: #000000;

JSON

{
  "hex": "#645dcf",
  "rgb": {
    "r": 100,
    "g": 93,
    "b": 207
  },
  "hsl": {
    "h": 243.684,
    "s": 54.286,
    "l": 58.824
  },
  "oklch": {
    "l": 0.54542,
    "c": 0.17055,
    "h": 281.9
  },
  "luminance": 0.15043
}

Semantic roles & 50–950 ramp

primary

#645DCF

secondary

#D8DAAD

accent

#DE4AD5

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0E0C15

muted

#7E7D83

Preview Lab

Preview with #645DCF

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

Preview Lab → · Contrast checker → · Palette generator →