#645EB7#645EB7

#645EB7 is a mid, vivid blue. Relative luminance 0.141; OKLCH L 53.1% C 0.136 H 283.8°. Best body text is #FFFFFF at 5.49:1 contrast (WCAG AA passes).

Color values

HEX	#645EB7
RGB	rgb(100, 94, 183)
HSL	hsl(244, 38%, 54%)
HSV	hsv(244, 49%, 72%)
CMYK	cmyk(45.4%, 48.6%, 0%, 28.2%)
CIE-LAB	lab(44.42, 25.64, -46.52)
CIE-LCH	lch(44.42, 53.12, 298.86°)
OKLab	oklab(53.11% 0.0324 -0.132)
OKLCH	oklch(53.11% 0.136 283.8)
XYZ	xyz(17.8030, 14.1328, 46.5804)
Luminance	0.1413 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645EB7 #B1B75E

analogous

#5E85B7 #645EB7 #915EB7

triadic

#645EB7 #B7645E #5EB764

tetradic

#645EB7 #B75E85 #B1B75E #5EB791

square

#645EB7 #B75E85 #B1B75E #5EB791

split-complementary

#645EB7 #B7915E #85B75E

monochromatic

#34306B #484395 #645EB7 #8D88CA #B5B3DD

Accessibility & contrast

On white

5.49

#645EB7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.83

#645EB7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645EB7

5.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645EB7	#FFFFFF	#000000	##FFFFFF
##645EB7	1.00	5.49	3.83	5.49
#FFFFFF	5.49	1.00	21.00	1.00
#000000	3.83	21.00	1.00	21.00
##FFFFFF	5.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#386CBA

Deuteranopia (green-blind)

#3566B5

Tritanopia (blue-blind)

#497182

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #645eb7;
/* rgb */ color: rgb(100, 94, 183);
/* oklch */ color: oklch(53.1% 0.136 283.8);

Tailwind

colors: {
  custom: {
    50: '#958bcd',
    500: '#645eb7',
    950: '#000000',
  },
}

SCSS

$custom: #645eb7;
$custom-light: #958bcd;
$custom-dark: #000000;

JSON

{
  "hex": "#645eb7",
  "rgb": {
    "r": 100,
    "g": 94,
    "b": 183
  },
  "hsl": {
    "h": 244.045,
    "s": 38.197,
    "l": 54.314
  },
  "oklch": {
    "l": 0.53106,
    "c": 0.13598,
    "h": 283.8
  },
  "luminance": 0.14134
}

Semantic roles & 50–950 ramp

primary

#645EB7

secondary

#C9CBA6

accent

#CE5AC6

background

#F9F8FC

surface

#F2F0F9

border

#CCCBD2

text

#0E0C13

muted

#7E7D82

Preview Lab

Preview with #645EB7

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

Preview Lab → · Contrast checker → · Palette generator →