#645BCE#645BCE

#645BCE is a mid, vivid blue. Relative luminance 0.146; OKLCH L 54.1% C 0.172 H 282.5°. Best body text is #FFFFFF at 5.34:1 contrast (WCAG AA passes).

Color values

HEX	#645BCE
RGB	rgb(100, 91, 206)
HSL	hsl(245, 54%, 58%)
HSV	hsv(245, 56%, 81%)
CMYK	cmyk(51.5%, 55.8%, 0%, 19.2%)
CIE-LAB	lab(45.15, 34.50, -58.68)
CIE-LCH	lch(45.15, 68.07, 300.45°)
OKLab	oklab(54.12% 0.0373 -0.1678)
OKLCH	oklch(54.12% 0.172 282.5)
XYZ	xyz(20.1338, 14.6466, 60.1467)
Luminance	0.1465 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645BCE #C5CE5B

analogous

#5B8BCE #645BCE #9E5BCE

triadic

#645BCE #CE645B #5BCE64

tetradic

#645BCE #CE5B8B #C5CE5B #5BCE9E

square

#645BCE #CE5B8B #C5CE5B #5BCE9E

split-complementary

#645BCE #CE9E5B #8BCE5B

monochromatic

#302886 #4036B6 #645BCE #918ADC #BDB9EA

Accessibility & contrast

On white

5.34

#645BCE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.93

#645BCE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645BCE

5.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645BCE	#FFFFFF	#000000	##FFFFFF
##645BCE	1.00	5.34	3.93	5.34
#FFFFFF	5.34	1.00	21.00	1.00
#000000	3.93	21.00	1.00	21.00
##FFFFFF	5.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0A6FD2

Deuteranopia (green-blind)

#0067CC

Tritanopia (blue-blind)

#3A758C

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #645bce;
/* rgb */ color: rgb(100, 91, 206);
/* oklch */ color: oklch(54.1% 0.172 282.5);

Tailwind

colors: {
  custom: {
    50: '#9889de',
    500: '#645bce',
    950: '#000000',
  },
}

SCSS

$custom: #645bce;
$custom-light: #9889de;
$custom-dark: #000000;

JSON

{
  "hex": "#645bce",
  "rgb": {
    "r": 100,
    "g": 91,
    "b": 206
  },
  "hsl": {
    "h": 244.696,
    "s": 53.991,
    "l": 58.235
  },
  "oklch": {
    "l": 0.54115,
    "c": 0.1719,
    "h": 282.5
  },
  "luminance": 0.14648
}

Semantic roles & 50–950 ramp

primary

#645BCE

secondary

#D6D9AB

accent

#DD4AD2

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0E0B15

muted

#7E7C83

Preview Lab

Preview with #645BCE

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

Preview Lab → · Contrast checker → · Palette generator →