#645CEA#645CEA

#645CEA is a mid, highly saturated blue. Relative luminance 0.163; OKLCH L 56.4% C 0.207 H 279.9°. Best body text is #FFFFFF at 4.93:1 contrast (WCAG AA passes).

Color values

HEX	#645CEA
RGB	rgb(100, 92, 234)
HSL	hsl(243, 77%, 64%)
HSV	hsv(243, 61%, 92%)
CMYK	cmyk(57.3%, 60.7%, 0%, 8.2%)
CIE-LAB	lab(47.37, 42.58, -71.00)
CIE-LCH	lch(47.37, 82.79, 300.95°)
OKLab	oklab(56.38% 0.0358 -0.204)
OKLCH	oklch(56.38% 0.207 279.9)
XYZ	xyz(23.9293, 16.3025, 79.7117)
Luminance	0.1630 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645CEA #E2EA5C

analogous

#5C9BEA #645CEA #AB5CEA

triadic

#645CEA #EA645C #5CEA64

tetradic

#645CEA #EA5C9B #E2EA5C #5CEAAB

square

#645CEA #EA5C9B #E2EA5C #5CEAAB

split-complementary

#645CEA #EAAB5C #9BEA5C

monochromatic

#2017B4 #3026E3 #645CEA #9892F1 #CBC8F8

Accessibility & contrast

On white

4.93

#645CEA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.26

#645CEA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645CEA

4.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645CEA	#FFFFFF	#000000	##FFFFFF
##645CEA	1.00	4.93	4.26	4.93
#FFFFFF	4.93	1.00	21.00	1.00
#000000	4.26	21.00	1.00	21.00
##FFFFFF	4.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0076EF

Deuteranopia (green-blind)

#006BE7

Tritanopia (blue-blind)

#0F7F9A

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #645cea;
/* rgb */ color: rgb(100, 92, 234);
/* oklch */ color: oklch(56.4% 0.207 279.9);

Tailwind

colors: {
  custom: {
    50: '#9c8bf2',
    500: '#645cea',
    950: '#000000',
  },
}

SCSS

$custom: #645cea;
$custom-light: #9c8bf2;
$custom-dark: #000000;

JSON

{
  "hex": "#645cea",
  "rgb": {
    "r": 100,
    "g": 92,
    "b": 234
  },
  "hsl": {
    "h": 243.38,
    "s": 77.174,
    "l": 63.922
  },
  "oklch": {
    "l": 0.56384,
    "c": 0.20713,
    "h": 279.9
  },
  "luminance": 0.16304
}

Semantic roles & 50–950 ramp

primary

#645CEA

secondary

#E7EAB8

accent

#D90CCE

background

#FAF8FE

surface

#F4F0FD

border

#CECBD5

text

#0F0C17

muted

#7F7D85

Preview Lab

Preview with #645CEA

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

Preview Lab → · Contrast checker → · Palette generator →