#645AB0#645AB0

#645AB0 is a mid, vivid blue. Relative luminance 0.132; OKLCH L 51.9% C 0.132 H 286.2°. Best body text is #FFFFFF at 5.78:1 contrast (WCAG AA passes).

Color values

HEX	#645AB0
RGB	rgb(100, 90, 176)
HSL	hsl(247, 35%, 52%)
HSV	hsv(247, 49%, 69%)
CMYK	cmyk(43.2%, 48.9%, 0%, 31%)
CIE-LAB	lab(43.00, 26.01, -44.70)
CIE-LCH	lch(43.00, 51.71, 300.19°)
OKLab	oklab(51.9% 0.0367 -0.1267)
OKLCH	oklch(51.9% 0.132 286.2)
XYZ	xyz(16.7459, 13.1556, 42.7228)
Luminance	0.1316 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645AB0 #A6B05A

analogous

#5A7BB0 #645AB0 #8F5AB0

triadic

#645AB0 #B0645A #5AB064

tetradic

#645AB0 #B05A7B #A6B05A #5AB08F

square

#645AB0 #B05A7B #A6B05A #5AB08F

split-complementary

#645AB0 #B08F5A #7BB05A

monochromatic

#342E61 #4B428A #645AB0 #8B83C4 #B2ADD8

Accessibility & contrast

On white

5.78

#645AB0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.63

#645AB0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645AB0

5.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645AB0	#FFFFFF	#000000	##FFFFFF
##645AB0	1.00	5.78	3.63	5.78
#FFFFFF	5.78	1.00	21.00	1.00
#000000	3.63	21.00	1.00	21.00
##FFFFFF	5.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3768B3

Deuteranopia (green-blind)

#3563AE

Tritanopia (blue-blind)

#4D6C7C

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #645ab0;
/* rgb */ color: rgb(100, 90, 176);
/* oklch */ color: oklch(51.9% 0.132 286.2);

Tailwind

colors: {
  custom: {
    50: '#9488c8',
    500: '#645ab0',
    950: '#000000',
  },
}

SCSS

$custom: #645ab0;
$custom-light: #9488c8;
$custom-dark: #000000;

JSON

{
  "hex": "#645ab0",
  "rgb": {
    "r": 100,
    "g": 90,
    "b": 176
  },
  "hsl": {
    "h": 246.977,
    "s": 35.246,
    "l": 52.157
  },
  "oklch": {
    "l": 0.51899,
    "c": 0.13194,
    "h": 286.2
  },
  "luminance": 0.13156
}

Semantic roles & 50–950 ramp

primary

#645AB0

secondary

#C1C6A0

accent

#CB5DBE

background

#F9F8FC

surface

#F2F0F8

border

#CCCBD1

text

#0E0B13

muted

#7E7C82

Preview Lab

Preview with #645AB0

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

Preview Lab → · Contrast checker → · Palette generator →