#645FC8#645FC8

#645FC8 is a mid, vivid blue. Relative luminance 0.151; OKLCH L 54.4% C 0.158 H 281.9°. Best body text is #FFFFFF at 5.23:1 contrast (WCAG AA passes).

Color values

HEX	#645FC8
RGB	rgb(100, 95, 200)
HSL	hsl(243, 49%, 58%)
HSV	hsv(243, 53%, 78%)
CMYK	cmyk(50%, 52.5%, 0%, 21.6%)
CIE-LAB	lab(45.72, 30.22, -54.30)
CIE-LCH	lch(45.72, 62.14, 299.09°)
OKLab	oklab(54.42% 0.0327 -0.1549)
OKLCH	oklch(54.42% 0.158 281.9)
XYZ	xyz(19.7699, 15.0628, 56.4981)
Luminance	0.1506 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645FC8 #C3C85F

analogous

#5F8EC8 #645FC8 #985FC8

triadic

#645FC8 #C8645F #5FC864

tetradic

#645FC8 #C85F8E #C3C85F #5FC898

square

#645FC8 #C85F8E #C3C85F #5FC898

split-complementary

#645FC8 #C8985F #8EC85F

monochromatic

#302C80 #413CAE #645FC8 #908DD8 #BCBAE7

Accessibility & contrast

On white

5.23

#645FC8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.01

#645FC8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645FC8

5.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645FC8	#FFFFFF	#000000	##FFFFFF
##645FC8	1.00	5.23	4.01	5.23
#FFFFFF	5.23	1.00	21.00	1.00
#000000	4.01	21.00	1.00	21.00
##FFFFFF	5.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2870CC

Deuteranopia (green-blind)

#1F69C6

Tritanopia (blue-blind)

#3E768A

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #645fc8;
/* rgb */ color: rgb(100, 95, 200);
/* oklch */ color: oklch(54.4% 0.158 281.9);

Tailwind

colors: {
  custom: {
    50: '#978cd9',
    500: '#645fc8',
    950: '#000000',
  },
}

SCSS

$custom: #645fc8;
$custom-light: #978cd9;
$custom-dark: #000000;

JSON

{
  "hex": "#645fc8",
  "rgb": {
    "r": 100,
    "g": 95,
    "b": 200
  },
  "hsl": {
    "h": 242.857,
    "s": 48.837,
    "l": 57.843
  },
  "oklch": {
    "l": 0.54417,
    "c": 0.15831,
    "h": 281.9
  },
  "luminance": 0.15064
}

Semantic roles & 50–950 ramp

primary

#645FC8

secondary

#D4D6AC

accent

#D84FD2

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0E0C15

muted

#7E7D83

Preview Lab

Preview with #645FC8

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

Preview Lab → · Contrast checker → · Palette generator →