#646DDE#646DDE

#646DDE is a mid, vivid blue. Relative luminance 0.189; OKLCH L 58.5% C 0.170 H 276.4°. Best body text is #000000 at 4.78:1 contrast (WCAG AA passes).

Color values

HEX	#646DDE
RGB	rgb(100, 109, 222)
HSL	hsl(236, 65%, 63%)
HSV	hsv(236, 55%, 87%)
CMYK	cmyk(55%, 50.9%, 0%, 12.9%)
CIE-LAB	lab(50.59, 28.58, -59.01)
CIE-LCH	lch(50.59, 65.57, 295.84°)
OKLab	oklab(58.52% 0.0189 -0.1686)
OKLCH	oklch(58.52% 0.17 276.4)
XYZ	xyz(23.9048, 18.9189, 71.4851)
Luminance	0.1892 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646DDE #DED564

analogous

#64AADE #646DDE #9864DE

triadic

#646DDE #DE646D #6DDE64

tetradic

#646DDE #DE64AA #DED564 #64DE98

square

#646DDE #DE64AA #DED564 #64DE98

split-complementary

#646DDE #DE9864 #AADE64

monochromatic

#232DA5 #323DD3 #646DDE #969DE9 #C9CCF3

Accessibility & contrast

On white

4.39

#646DDE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.78

#646DDE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646DDE

4.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646DDE	#FFFFFF	#000000	##000000
##646DDE	1.00	4.39	4.78	4.78
#FFFFFF	4.39	1.00	21.00	21.00
#000000	4.78	21.00	1.00	1.00
##000000	4.78	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#317EE2

Deuteranopia (green-blind)

#1C74DC

Tritanopia (blue-blind)

#24869B

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #646dde;
/* rgb */ color: rgb(100, 109, 222);
/* oklch */ color: oklch(58.5% 0.170 276.4);

Tailwind

colors: {
  custom: {
    50: '#9996e9',
    500: '#646dde',
    950: '#000000',
  },
}

SCSS

$custom: #646dde;
$custom-light: #9996e9;
$custom-dark: #000000;

JSON

{
  "hex": "#646dde",
  "rgb": {
    "r": 100,
    "g": 109,
    "b": 222
  },
  "hsl": {
    "h": 235.574,
    "s": 64.894,
    "l": 63.137
  },
  "oklch": {
    "l": 0.58519,
    "c": 0.1697,
    "h": 276.4
  },
  "luminance": 0.18921
}

Semantic roles & 50–950 ramp

primary

#646DDE

secondary

#E5E2B9

accent

#BF19CD

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0F0D16

muted

#7E7E84

Preview Lab

Preview with #646DDE

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

Preview Lab → · Contrast checker → · Palette generator →