#646FD0#646FD0

#646FD0 is a mid, vivid blue. Relative luminance 0.186; OKLCH L 58.0% C 0.148 H 275.9°. Best body text is #000000 at 4.73:1 contrast (WCAG AA passes).

Color values

HEX	#646FD0
RGB	rgb(100, 111, 208)
HSL	hsl(234, 53%, 60%)
HSV	hsv(234, 52%, 82%)
CMYK	cmyk(51.9%, 46.6%, 0%, 18.4%)
CIE-LAB	lab(50.25, 22.91, -51.62)
CIE-LCH	lch(50.25, 56.47, 293.94°)
OKLab	oklab(57.99% 0.0152 -0.1469)
OKLCH	oklch(57.99% 0.148 275.9)
XYZ	xyz(22.3215, 18.6309, 62.0822)
Luminance	0.1863 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646FD0 #D0C564

analogous

#64A5D0 #646FD0 #8F64D0

triadic

#646FD0 #D0646F #6FD064

tetradic

#646FD0 #D064A5 #D0C564 #64D08F

square

#646FD0 #D064A5 #D0C564 #64D08F

split-complementary

#646FD0 #D08F64 #A5D064

monochromatic

#2B358E #3947BD #646FD0 #939BDE #C2C6EC

Accessibility & contrast

On white

4.44

#646FD0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.73

#646FD0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646FD0

4.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646FD0	#FFFFFF	#000000	##000000
##646FD0	1.00	4.44	4.73	4.73
#FFFFFF	4.44	1.00	21.00	21.00
#000000	4.73	21.00	1.00	1.00
##000000	4.73	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#447CD4

Deuteranopia (green-blind)

#3873CE

Tritanopia (blue-blind)

#358495

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #646fd0;
/* rgb */ color: rgb(100, 111, 208);
/* oklch */ color: oklch(58.0% 0.148 275.9);

Tailwind

colors: {
  custom: {
    50: '#9798df',
    500: '#646fd0',
    950: '#000000',
  },
}

SCSS

$custom: #646fd0;
$custom-light: #9798df;
$custom-dark: #000000;

JSON

{
  "hex": "#646fd0",
  "rgb": {
    "r": 100,
    "g": 111,
    "b": 208
  },
  "hsl": {
    "h": 233.889,
    "s": 53.465,
    "l": 60.392
  },
  "oklch": {
    "l": 0.57989,
    "c": 0.14768,
    "h": 275.9
  },
  "luminance": 0.18632
}

Semantic roles & 50–950 ramp

primary

#646FD0

secondary

#DDD8B3

accent

#B125C1

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0E0D15

muted

#7E7E83

Preview Lab

Preview with #646FD0

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

Preview Lab → · Contrast checker → · Palette generator →