#646FAA#646FAA

#646FAA is a mid, moderate blue. Relative luminance 0.170; OKLCH L 55.8% C 0.093 H 275.0°. Best body text is #FFFFFF at 4.78:1 contrast (WCAG AA passes).

Color values

HEX	#646FAA
RGB	rgb(100, 111, 170)
HSL	hsl(231, 29%, 53%)
HSV	hsv(231, 41%, 67%)
CMYK	cmyk(41.2%, 34.7%, 0%, 33.3%)
CIE-LAB	lab(48.23, 11.29, -32.90)
CIE-LCH	lch(48.23, 34.78, 288.93°)
OKLab	oklab(55.79% 0.008 -0.0922)
OKLCH	oklch(55.79% 0.093 275)
XYZ	xyz(18.1935, 16.9796, 40.3412)
Luminance	0.1698 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646FAA #AA9F64

analogous

#6492AA #646FAA #7C64AA

triadic

#646FAA #AA646F #6FAA64

tetradic

#646FAA #AA6492 #AA9F64 #64AA7C

square

#646FAA #AA6492 #AA9F64 #64AA7C

split-complementary

#646FAA #AA7C64 #92AA64

monochromatic

#343B5F #4A5487 #646FAA #8C94C0 #B3B8D5

Accessibility & contrast

On white

4.78

#646FAA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.40

#646FAA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646FAA

4.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646FAA	#FFFFFF	#000000	##FFFFFF
##646FAA	1.00	4.78	4.40	4.78
#FFFFFF	4.78	1.00	21.00	1.00
#000000	4.40	21.00	1.00	21.00
##FFFFFF	4.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B75AC

Deuteranopia (green-blind)

#5670A9

Tritanopia (blue-blind)

#4E7B85

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #646faa;
/* rgb */ color: rgb(100, 111, 170);
/* oklch */ color: oklch(55.8% 0.093 275.0);

Tailwind

colors: {
  custom: {
    50: '#9398c3',
    500: '#646faa',
    950: '#000000',
  },
}

SCSS

$custom: #646faa;
$custom-light: #9398c3;
$custom-dark: #000000;

JSON

{
  "hex": "#646faa",
  "rgb": {
    "r": 100,
    "g": 111,
    "b": 170
  },
  "hsl": {
    "h": 230.571,
    "s": 29.167,
    "l": 52.941
  },
  "oklch": {
    "l": 0.55788,
    "c": 0.09257,
    "h": 275
  },
  "luminance": 0.1698
}

Semantic roles & 50–950 ramp

primary

#646FAA

secondary

#C4BFA6

accent

#B662C5

background

#F9F9FC

surface

#F1F2F8

border

#CBCCD1

text

#0D0D12

muted

#7E7E81

Preview Lab

Preview with #646FAA

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

Preview Lab → · Contrast checker → · Palette generator →