#645FCF#645FCF

#645FCF is a mid, vivid blue. Relative luminance 0.154; OKLCH L 54.9% C 0.168 H 281.3°. Best body text is #FFFFFF at 5.15:1 contrast (WCAG AA passes).

Color values

HEX	#645FCF
RGB	rgb(100, 95, 207)
HSL	hsl(243, 54%, 59%)
HSV	hsv(243, 54%, 81%)
CMYK	cmyk(51.7%, 54.1%, 0%, 18.8%)
CIE-LAB	lab(46.17, 32.38, -57.59)
CIE-LCH	lch(46.17, 66.07, 299.35°)
OKLab	oklab(54.9% 0.033 -0.1646)
OKLCH	oklch(54.9% 0.168 281.3)
XYZ	xyz(20.6068, 15.3976, 60.9056)
Luminance	0.1540 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645FCF #CACF5F

analogous

#5F92CF #645FCF #9C5FCF

triadic

#645FCF #CF645F #5FCF64

tetradic

#645FCF #CF5F92 #CACF5F #5FCF9C

square

#645FCF #CF5F92 #CACF5F #5FCF9C

split-complementary

#645FCF #CF9C5F #92CF5F

monochromatic

#2E298A #3D38B9 #645FCF #928EDD #BFBDEB

Accessibility & contrast

On white

5.15

#645FCF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.08

#645FCF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645FCF

5.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645FCF	#FFFFFF	#000000	##FFFFFF
##645FCF	1.00	5.15	4.08	5.15
#FFFFFF	5.15	1.00	21.00	1.00
#000000	4.08	21.00	1.00	21.00
##FFFFFF	5.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D71D3

Deuteranopia (green-blind)

#0A69CD

Tritanopia (blue-blind)

#38788E

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #645fcf;
/* rgb */ color: rgb(100, 95, 207);
/* oklch */ color: oklch(54.9% 0.168 281.3);

Tailwind

colors: {
  custom: {
    50: '#988cde',
    500: '#645fcf',
    950: '#000000',
  },
}

SCSS

$custom: #645fcf;
$custom-light: #988cde;
$custom-dark: #000000;

JSON

{
  "hex": "#645fcf",
  "rgb": {
    "r": 100,
    "g": 95,
    "b": 207
  },
  "hsl": {
    "h": 242.679,
    "s": 53.846,
    "l": 59.216
  },
  "oklch": {
    "l": 0.54901,
    "c": 0.16786,
    "h": 281.3
  },
  "luminance": 0.15399
}

Semantic roles & 50–950 ramp

primary

#645FCF

secondary

#D9DBAF

accent

#DD4BD7

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0E0C15

muted

#7E7D83

Preview Lab

Preview with #645FCF

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

Preview Lab → · Contrast checker → · Palette generator →