#645ECE#645ECE

#645ECE is a mid, vivid blue. Relative luminance 0.152; OKLCH L 54.6% C 0.168 H 281.7°. Best body text is #FFFFFF at 5.21:1 contrast (WCAG AA passes).

Color values

HEX	#645ECE
RGB	rgb(100, 94, 206)
HSL	hsl(243, 53%, 59%)
HSV	hsv(243, 54%, 81%)
CMYK	cmyk(51.5%, 54.4%, 0%, 19.2%)
CIE-LAB	lab(45.87, 32.68, -57.52)
CIE-LCH	lch(45.87, 66.15, 299.60°)
OKLab	oklab(54.65% 0.0341 -0.1644)
OKLCH	oklch(54.65% 0.168 281.7)
XYZ	xyz(20.3954, 15.1698, 60.2339)
Luminance	0.1517 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645ECE #C8CE5E

analogous

#5E90CE #645ECE #9C5ECE

triadic

#645ECE #CE645E #5ECE64

tetradic

#645ECE #CE5E90 #C8CE5E #5ECE9C

square

#645ECE #CE5E90 #C8CE5E #5ECE9C

split-complementary

#645ECE #CE9C5E #90CE5E

monochromatic

#2F2988 #3F38B7 #645ECE #918DDC #BEBCEB

Accessibility & contrast

On white

5.21

#645ECE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.03

#645ECE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645ECE

5.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645ECE	#FFFFFF	#000000	##FFFFFF
##645ECE	1.00	5.21	4.03	5.21
#FFFFFF	5.21	1.00	21.00	1.00
#000000	4.03	21.00	1.00	21.00
##FFFFFF	5.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B71D2

Deuteranopia (green-blind)

#0869CC

Tritanopia (blue-blind)

#39778D

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #645ece;
/* rgb */ color: rgb(100, 94, 206);
/* oklch */ color: oklch(54.6% 0.168 281.7);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#645ece",
  "rgb": {
    "r": 100,
    "g": 94,
    "b": 206
  },
  "hsl": {
    "h": 243.214,
    "s": 53.333,
    "l": 58.824
  },
  "oklch": {
    "l": 0.5465,
    "c": 0.16785,
    "h": 281.7
  },
  "luminance": 0.15171
}

Semantic roles & 50–950 ramp

primary

#645ECE

secondary

#D8DAAE

accent

#DD4BD5

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0E0C15

muted

#7E7D83

Preview Lab

Preview with #645ECE

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

Preview Lab → · Contrast checker → · Palette generator →