#645EC9#645EC9

#645EC9 is a mid, vivid blue. Relative luminance 0.149; OKLCH L 54.3% C 0.161 H 282.1°. Best body text is #FFFFFF at 5.27:1 contrast (WCAG AA passes).

Color values

HEX	#645EC9
RGB	rgb(100, 94, 201)
HSL	hsl(243, 50%, 58%)
HSV	hsv(243, 53%, 79%)
CMYK	cmyk(50.2%, 53.2%, 0%, 21.2%)
CIE-LAB	lab(45.54, 31.13, -55.17)
CIE-LCH	lch(45.54, 63.35, 299.44°)
OKLab	oklab(54.3% 0.0339 -0.1574)
OKLCH	oklch(54.3% 0.161 282.1)
XYZ	xyz(19.7976, 14.9307, 57.0857)
Luminance	0.1493 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645EC9 #C3C95E

analogous

#5E8EC9 #645EC9 #995EC9

triadic

#645EC9 #C9645E #5EC964

tetradic

#645EC9 #C95E8E #C3C95E #5EC999

square

#645EC9 #C95E8E #C3C95E #5EC999

split-complementary

#645EC9 #C9995E #8EC95E

monochromatic

#302B81 #413BAF #645EC9 #908CD8 #BCBAE8

Accessibility & contrast

On white

5.27

#645EC9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.99

#645EC9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645EC9

5.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645EC9	#FFFFFF	#000000	##FFFFFF
##645EC9	1.00	5.27	3.99	5.27
#FFFFFF	5.27	1.00	21.00	1.00
#000000	3.99	21.00	1.00	21.00
##FFFFFF	5.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2470CD

Deuteranopia (green-blind)

#1968C7

Tritanopia (blue-blind)

#3D768A

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #645ec9;
/* rgb */ color: rgb(100, 94, 201);
/* oklch */ color: oklch(54.3% 0.161 282.1);

Tailwind

colors: {
  custom: {
    50: '#978cda',
    500: '#645ec9',
    950: '#000000',
  },
}

SCSS

$custom: #645ec9;
$custom-light: #978cda;
$custom-dark: #000000;

JSON

{
  "hex": "#645ec9",
  "rgb": {
    "r": 100,
    "g": 94,
    "b": 201
  },
  "hsl": {
    "h": 243.364,
    "s": 49.767,
    "l": 57.843
  },
  "oklch": {
    "l": 0.54302,
    "c": 0.16105,
    "h": 282.1
  },
  "luminance": 0.14932
}

Semantic roles & 50–950 ramp

primary

#645EC9

secondary

#D4D7AC

accent

#D94FD2

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0E0C15

muted

#7E7D83

Preview Lab

Preview with #645EC9

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

Preview Lab → · Contrast checker → · Palette generator →