#646ADC#646ADC

#646ADC is a mid, vivid blue. Relative luminance 0.182; OKLCH L 57.8% C 0.171 H 277.4°. Best body text is #000000 at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#646ADC
RGB	rgb(100, 106, 220)
HSL	hsl(237, 63%, 63%)
HSV	hsv(237, 55%, 86%)
CMYK	cmyk(54.5%, 51.8%, 0%, 13.7%)
CIE-LAB	lab(49.72, 29.77, -59.29)
CIE-LCH	lch(49.72, 66.34, 296.66°)
OKLab	oklab(57.82% 0.0219 -0.1695)
OKLCH	oklch(57.82% 0.171 277.4)
XYZ	xyz(23.3237, 18.1832, 69.9769)
Luminance	0.1819 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646ADC #DCD664

analogous

#64A6DC #646ADC #9A64DC

triadic

#646ADC #DC646A #6ADC64

tetradic

#646ADC #DC64A6 #DCD664 #64DC9A

square

#646ADC #DC64A6 #DCD664 #64DC9A

split-complementary

#646ADC #DC9A64 #A6DC64

monochromatic

#242BA1 #323AD1 #646ADC #969AE7 #C8CAF3

Accessibility & contrast

On white

4.53

#646ADC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.64

#646ADC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646ADC

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646ADC	#FFFFFF	#000000	##000000
##646ADC	1.00	4.53	4.64	4.64
#FFFFFF	4.53	1.00	21.00	21.00
#000000	4.64	21.00	1.00	1.00
##000000	4.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B7BE0

Deuteranopia (green-blind)

#1571DA

Tritanopia (blue-blind)

#288499

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #646adc;
/* rgb */ color: rgb(100, 106, 220);
/* oklch */ color: oklch(57.8% 0.171 277.4);

Tailwind

colors: {
  custom: {
    50: '#9994e7',
    500: '#646adc',
    950: '#000000',
  },
}

SCSS

$custom: #646adc;
$custom-light: #9994e7;
$custom-dark: #000000;

JSON

{
  "hex": "#646adc",
  "rgb": {
    "r": 100,
    "g": 106,
    "b": 220
  },
  "hsl": {
    "h": 237,
    "s": 63.158,
    "l": 62.745
  },
  "oklch": {
    "l": 0.57821,
    "c": 0.1709,
    "h": 277.4
  },
  "luminance": 0.18185
}

Semantic roles & 50–950 ramp

primary

#646ADC

secondary

#E4E1B8

accent

#C21BCB

background

#F9F9FE

surface

#F2F1FD

border

#CCCBD5

text

#0F0D16

muted

#7E7E84

Preview Lab

Preview with #646ADC

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

Preview Lab → · Contrast checker → · Palette generator →