#645CEE#645CEE

#645CEE is a mid, highly saturated blue. Relative luminance 0.165; OKLCH L 56.7% C 0.212 H 279.6°. Best body text is #FFFFFF at 4.88:1 contrast (WCAG AA passes).

Color values

HEX	#645CEE
RGB	rgb(100, 92, 238)
HSL	hsl(243, 81%, 65%)
HSV	hsv(243, 61%, 93%)
CMYK	cmyk(58%, 61.3%, 0%, 6.7%)
CIE-LAB	lab(47.67, 43.82, -72.76)
CIE-LCH	lch(47.67, 84.94, 301.06°)
OKLab	oklab(56.7% 0.0356 -0.2092)
OKLCH	oklch(56.7% 0.212 279.6)
XYZ	xyz(24.5104, 16.5349, 82.7723)
Luminance	0.1654 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645CEE #E6EE5C

analogous

#5C9DEE #645CEE #AD5CEE

triadic

#645CEE #EE645C #5CEE64

tetradic

#645CEE #EE5C9D #E6EE5C #5CEEAD

square

#645CEE #EE5C9D #E6EE5C #5CEEAD

split-complementary

#645CEE #EEAD5C #9DEE5C

monochromatic

#1D14BC #2F25E8 #645CEE #9993F4 #CDCBFA

Accessibility & contrast

On white

4.88

#645CEE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.31

#645CEE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645CEE

4.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645CEE	#FFFFFF	#000000	##FFFFFF
##645CEE	1.00	4.88	4.31	4.88
#FFFFFF	4.88	1.00	21.00	1.00
#000000	4.31	21.00	1.00	21.00
##FFFFFF	4.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0077F3

Deuteranopia (green-blind)

#006BEB

Tritanopia (blue-blind)

#00809C

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #645cee;
/* rgb */ color: rgb(100, 92, 238);
/* oklch */ color: oklch(56.7% 0.212 279.6);

Tailwind

colors: {
  custom: {
    50: '#9d8bf5',
    500: '#645cee',
    950: '#000000',
  },
}

SCSS

$custom: #645cee;
$custom-light: #9d8bf5;
$custom-dark: #000000;

JSON

{
  "hex": "#645cee",
  "rgb": {
    "r": 100,
    "g": 92,
    "b": 238
  },
  "hsl": {
    "h": 243.288,
    "s": 81.111,
    "l": 64.706
  },
  "oklch": {
    "l": 0.56697,
    "c": 0.2122,
    "h": 279.6
  },
  "luminance": 0.16537
}

Semantic roles & 50–950 ramp

primary

#645CEE

secondary

#E9ECBA

accent

#DD08D2

background

#FAF8FF

surface

#F4F0FE

border

#CECBD6

text

#0F0C17

muted

#7F7D85

Preview Lab

Preview with #645CEE

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

Preview Lab → · Contrast checker → · Palette generator →