#645EB8#645EB8

#645EB8 is a mid, vivid blue. Relative luminance 0.142; OKLCH L 53.2% C 0.137 H 283.7°. Best body text is #FFFFFF at 5.48:1 contrast (WCAG AA passes).

Color values

HEX	#645EB8
RGB	rgb(100, 94, 184)
HSL	hsl(244, 39%, 55%)
HSV	hsv(244, 49%, 72%)
CMYK	cmyk(45.7%, 48.9%, 0%, 27.8%)
CIE-LAB	lab(44.48, 25.94, -47.01)
CIE-LCH	lch(44.48, 53.69, 298.89°)
OKLab	oklab(53.17% 0.0325 -0.1335)
OKLCH	oklch(53.17% 0.137 283.7)
XYZ	xyz(17.9074, 14.1746, 47.1305)
Luminance	0.1417 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645EB8 #B2B85E

analogous

#5E85B8 #645EB8 #915EB8

triadic

#645EB8 #B8645E #5EB864

tetradic

#645EB8 #B85E85 #B2B85E #5EB891

square

#645EB8 #B85E85 #B2B85E #5EB891

split-complementary

#645EB8 #B8915E #85B85E

monochromatic

#34306C #484296 #645EB8 #8D88CB #B6B3DD

Accessibility & contrast

On white

5.48

#645EB8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.83

#645EB8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645EB8

5.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645EB8	#FFFFFF	#000000	##FFFFFF
##645EB8	1.00	5.48	3.83	5.48
#FFFFFF	5.48	1.00	21.00	1.00
#000000	3.83	21.00	1.00	21.00
##FFFFFF	5.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#386CBB

Deuteranopia (green-blind)

#3466B6

Tritanopia (blue-blind)

#497182

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #645eb8;
/* rgb */ color: rgb(100, 94, 184);
/* oklch */ color: oklch(53.2% 0.137 283.7);

Tailwind

colors: {
  custom: {
    50: '#958bce',
    500: '#645eb8',
    950: '#000000',
  },
}

SCSS

$custom: #645eb8;
$custom-light: #958bce;
$custom-dark: #000000;

JSON

{
  "hex": "#645eb8",
  "rgb": {
    "r": 100,
    "g": 94,
    "b": 184
  },
  "hsl": {
    "h": 244,
    "s": 38.793,
    "l": 54.51
  },
  "oklch": {
    "l": 0.5317,
    "c": 0.1374,
    "h": 283.7
  },
  "luminance": 0.14175
}

Semantic roles & 50–950 ramp

primary

#645EB8

secondary

#C9CCA6

accent

#CF59C7

background

#F9F8FC

surface

#F2F0F9

border

#CCCBD2

text

#0E0C13

muted

#7E7D82

Preview Lab

Preview with #645EB8

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

Preview Lab → · Contrast checker → · Palette generator →