#646DD8#646DD8

#646DD8 is a mid, vivid blue. Relative luminance 0.186; OKLCH L 58.1% C 0.161 H 276.5°. Best body text is #000000 at 4.72:1 contrast (WCAG AA passes).

Color values

HEX	#646DD8
RGB	rgb(100, 109, 216)
HSL	hsl(235, 60%, 62%)
HSV	hsv(235, 54%, 85%)
CMYK	cmyk(53.7%, 49.5%, 0%, 15.3%)
CIE-LAB	lab(50.22, 26.67, -56.22)
CIE-LCH	lch(50.22, 62.22, 295.38°)
OKLab	oklab(58.12% 0.0183 -0.1604)
OKLCH	oklch(58.12% 0.161 276.5)
XYZ	xyz(23.1149, 18.6030, 67.3251)
Luminance	0.1860 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646DD8 #D8CF64

analogous

#64A7D8 #646DD8 #9564D8

triadic

#646DD8 #D8646D #6DD864

tetradic

#646DD8 #D864A7 #D8CF64 #64D895

square

#646DD8 #D864A7 #D8CF64 #64D895

split-complementary

#646DD8 #D89564 #A7D864

monochromatic

#27309B #333FCC #646DD8 #959BE4 #C6C9F1

Accessibility & contrast

On white

4.45

#646DD8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.72

#646DD8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646DD8

4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646DD8	#FFFFFF	#000000	##000000
##646DD8	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)

#387CDC

Deuteranopia (green-blind)

#2973D6

Tritanopia (blue-blind)

#2C8598

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #646dd8;
/* rgb */ color: rgb(100, 109, 216);
/* oklch */ color: oklch(58.1% 0.161 276.5);

Tailwind

colors: {
  custom: {
    50: '#9896e5',
    500: '#646dd8',
    950: '#000000',
  },
}

SCSS

$custom: #646dd8;
$custom-light: #9896e5;
$custom-dark: #000000;

JSON

{
  "hex": "#646dd8",
  "rgb": {
    "r": 100,
    "g": 109,
    "b": 216
  },
  "hsl": {
    "h": 235.345,
    "s": 59.794,
    "l": 61.961
  },
  "oklch": {
    "l": 0.58118,
    "c": 0.16146,
    "h": 276.5
  },
  "luminance": 0.18604
}

Semantic roles & 50–950 ramp

primary

#646DD8

secondary

#E1DEB7

accent

#BA1EC7

background

#F9F9FE

surface

#F2F2FC

border

#CCCCD5

text

#0E0D16

muted

#7E7E84

Preview Lab

Preview with #646DD8

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

Preview Lab → · Contrast checker → · Palette generator →