#646CDC#646CDC

#646CDC is a mid, vivid blue. Relative luminance 0.186; OKLCH L 58.2% C 0.168 H 276.7°. Best body text is #000000 at 4.72:1 contrast (WCAG AA passes).

Color values

HEX	#646CDC
RGB	rgb(100, 108, 220)
HSL	hsl(236, 63%, 63%)
HSV	hsv(236, 55%, 86%)
CMYK	cmyk(54.5%, 50.9%, 0%, 13.7%)
CIE-LAB	lab(50.22, 28.55, -58.49)
CIE-LCH	lch(50.22, 65.08, 296.02°)
OKLab	oklab(58.2% 0.0198 -0.1671)
OKLCH	oklch(58.2% 0.168 276.7)
XYZ	xyz(23.5322, 18.6002, 70.0464)
Luminance	0.1860 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646CDC #DCD464

analogous

#64A8DC #646CDC #9864DC

triadic

#646CDC #DC646C #6CDC64

tetradic

#646CDC #DC64A8 #DCD464 #64DC98

square

#646CDC #DC64A8 #DCD464 #64DC98

split-complementary

#646CDC #DC9864 #A8DC64

monochromatic

#242DA1 #323DD1 #646CDC #969BE7 #C8CBF3

Accessibility & contrast

On white

4.45

#646CDC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.72

#646CDC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646CDC

4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646CDC	#FFFFFF	#000000	##000000
##646CDC	1.00	4.45	4.72	4.72
#FFFFFF	4.45	1.00	21.00	21.00
#000000	4.72	21.00	1.00	1.00
##000000	4.72	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#317DE0

Deuteranopia (green-blind)

#1E73DA

Tritanopia (blue-blind)

#27859A

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #646cdc;
/* rgb */ color: rgb(100, 108, 220);
/* oklch */ color: oklch(58.2% 0.168 276.7);

Tailwind

colors: {
  custom: {
    50: '#9996e7',
    500: '#646cdc',
    950: '#000000',
  },
}

SCSS

$custom: #646cdc;
$custom-light: #9996e7;
$custom-dark: #000000;

JSON

{
  "hex": "#646cdc",
  "rgb": {
    "r": 100,
    "g": 108,
    "b": 220
  },
  "hsl": {
    "h": 236,
    "s": 63.158,
    "l": 62.745
  },
  "oklch": {
    "l": 0.58196,
    "c": 0.16827,
    "h": 276.7
  },
  "luminance": 0.18602
}

Semantic roles & 50–950 ramp

primary

#646CDC

secondary

#E4E1B8

accent

#BF1BCB

background

#F9F9FE

surface

#F2F1FD

border

#CCCBD5

text

#0F0D16

muted

#7E7E84

Preview Lab

Preview with #646CDC

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

Preview Lab → · Contrast checker → · Palette generator →