#646AC8#646AC8

#646AC8 is a mid, vivid blue. Relative luminance 0.172; OKLCH L 56.5% C 0.143 H 278.0°. Best body text is #FFFFFF at 4.73:1 contrast (WCAG AA passes).

Color values

HEX	#646AC8
RGB	rgb(100, 106, 200)
HSL	hsl(236, 48%, 59%)
HSV	hsv(236, 50%, 78%)
CMYK	cmyk(50%, 47%, 0%, 21.6%)
CIE-LAB	lab(48.49, 23.47, -49.85)
CIE-LCH	lch(48.49, 55.10, 295.21°)
OKLab	oklab(56.51% 0.02 -0.1417)
OKLCH	oklch(56.51% 0.143 278)
XYZ	xyz(20.8317, 17.1863, 56.8520)
Luminance	0.1719 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646AC8 #C8C264

analogous

#649CC8 #646AC8 #9064C8

triadic

#646AC8 #C8646A #6AC864

tetradic

#646AC8 #C8649C #C8C264 #64C890

square

#646AC8 #C8649C #C8C264 #64C890

split-complementary

#646AC8 #C89064 #9CC864

monochromatic

#2F3483 #3F45B0 #646AC8 #9195D8 #BEC1E8

Accessibility & contrast

On white

4.73

#646AC8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.44

#646AC8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646AC8

4.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646AC8	#FFFFFF	#000000	##FFFFFF
##646AC8	1.00	4.73	4.44	4.73
#FFFFFF	4.73	1.00	21.00	1.00
#000000	4.44	21.00	1.00	21.00
##FFFFFF	4.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4177CB

Deuteranopia (green-blind)

#386FC6

Tritanopia (blue-blind)

#3C7E8F

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #646ac8;
/* rgb */ color: rgb(100, 106, 200);
/* oklch */ color: oklch(56.5% 0.143 278.0);

Tailwind

colors: {
  custom: {
    50: '#9694d9',
    500: '#646ac8',
    950: '#000000',
  },
}

SCSS

$custom: #646ac8;
$custom-light: #9694d9;
$custom-dark: #000000;

JSON

{
  "hex": "#646ac8",
  "rgb": {
    "r": 100,
    "g": 106,
    "b": 200
  },
  "hsl": {
    "h": 236.4,
    "s": 47.619,
    "l": 58.824
  },
  "oklch": {
    "l": 0.56505,
    "c": 0.14315,
    "h": 278
  },
  "luminance": 0.17188
}

Semantic roles & 50–950 ramp

primary

#646AC8

secondary

#D8D5B0

accent

#CF51D7

background

#F9F9FD

surface

#F2F1FA

border

#CCCBD3

text

#0E0D15

muted

#7E7E83

Preview Lab

Preview with #646AC8

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

Preview Lab → · Contrast checker → · Palette generator →