#646FDA#646FDA

#646FDA is a mid, vivid blue. Relative luminance 0.191; OKLCH L 58.6% C 0.162 H 275.8°. Best body text is #000000 at 4.83:1 contrast (WCAG AA passes).

Color values

HEX	#646FDA
RGB	rgb(100, 111, 218)
HSL	hsl(234, 61%, 62%)
HSV	hsv(234, 54%, 85%)
CMYK	cmyk(54.1%, 49.1%, 0%, 14.5%)
CIE-LAB	lab(50.85, 26.08, -56.34)
CIE-LCH	lch(50.85, 62.08, 294.84°)
OKLab	oklab(58.63% 0.0164 -0.1608)
OKLCH	oklch(58.63% 0.162 275.8)
XYZ	xyz(23.5908, 19.1386, 68.7671)
Luminance	0.1914 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646FDA #DACF64

analogous

#64AADA #646FDA #9464DA

triadic

#646FDA #DA646F #6FDA64

tetradic

#646FDA #DA64AA #DACF64 #64DA94

square

#646FDA #DA64AA #DACF64 #64DA94

split-complementary

#646FDA #DA9464 #AADA64

monochromatic

#26319E #3341CE #646FDA #959DE6 #C7CBF2

Accessibility & contrast

On white

4.35

#646FDA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.83

#646FDA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646FDA

4.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646FDA	#FFFFFF	#000000	##000000
##646FDA	1.00	4.35	4.83	4.83
#FFFFFF	4.35	1.00	21.00	21.00
#000000	4.83	21.00	1.00	1.00
##000000	4.83	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B7EDE

Deuteranopia (green-blind)

#2B74D8

Tritanopia (blue-blind)

#29879A

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #646fda;
/* rgb */ color: rgb(100, 111, 218);
/* oklch */ color: oklch(58.6% 0.162 275.8);

Tailwind

colors: {
  custom: {
    50: '#9898e6',
    500: '#646fda',
    950: '#000000',
  },
}

SCSS

$custom: #646fda;
$custom-light: #9898e6;
$custom-dark: #000000;

JSON

{
  "hex": "#646fda",
  "rgb": {
    "r": 100,
    "g": 111,
    "b": 218
  },
  "hsl": {
    "h": 234.407,
    "s": 61.458,
    "l": 62.353
  },
  "oklch": {
    "l": 0.58633,
    "c": 0.16159,
    "h": 275.8
  },
  "luminance": 0.1914
}

Semantic roles & 50–950 ramp

primary

#646FDA

secondary

#E2DEB7

accent

#B91CC9

background

#F9F9FE

surface

#F2F2FC

border

#CCCCD5

text

#0F0D16

muted

#7E7E84

Preview Lab

Preview with #646FDA

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

Preview Lab → · Contrast checker → · Palette generator →