#646FD8#646FD8

#646FD8 is a mid, vivid blue. Relative luminance 0.190; OKLCH L 58.5% C 0.159 H 275.8°. Best body text is #000000 at 4.81:1 contrast (WCAG AA passes).

Color values

HEX	#646FD8
RGB	rgb(100, 111, 216)
HSL	hsl(234, 60%, 62%)
HSV	hsv(234, 54%, 85%)
CMYK	cmyk(53.7%, 48.6%, 0%, 15.3%)
CIE-LAB	lab(50.73, 25.45, -55.40)
CIE-LCH	lch(50.73, 60.96, 294.67°)
OKLab	oklab(58.5% 0.0162 -0.158)
OKLCH	oklch(58.5% 0.159 275.8)
XYZ	xyz(23.3307, 19.0345, 67.3971)
Luminance	0.1904 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646FD8 #D8CD64

analogous

#64A9D8 #646FD8 #9364D8

triadic

#646FD8 #D8646F #6FD864

tetradic

#646FD8 #D864A9 #D8CD64 #64D893

square

#646FD8 #D864A9 #D8CD64 #64D893

split-complementary

#646FD8 #D89364 #A9D864

monochromatic

#27329B #3342CC #646FD8 #959CE4 #C6CAF1

Accessibility & contrast

On white

4.37

#646FD8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.81

#646FD8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646FD8

4.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646FD8	#FFFFFF	#000000	##000000
##646FD8	1.00	4.37	4.81	4.81
#FFFFFF	4.37	1.00	21.00	21.00
#000000	4.81	21.00	1.00	1.00
##000000	4.81	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D7EDC

Deuteranopia (green-blind)

#2E74D6

Tritanopia (blue-blind)

#2C8699

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #646fd8;
/* rgb */ color: rgb(100, 111, 216);
/* oklch */ color: oklch(58.5% 0.159 275.8);

Tailwind

colors: {
  custom: {
    50: '#9898e5',
    500: '#646fd8',
    950: '#000000',
  },
}

SCSS

$custom: #646fd8;
$custom-light: #9898e5;
$custom-dark: #000000;

JSON

{
  "hex": "#646fd8",
  "rgb": {
    "r": 100,
    "g": 111,
    "b": 216
  },
  "hsl": {
    "h": 234.31,
    "s": 59.794,
    "l": 61.961
  },
  "oklch": {
    "l": 0.58502,
    "c": 0.15883,
    "h": 275.8
  },
  "luminance": 0.19036
}

Semantic roles & 50–950 ramp

primary

#646FD8

secondary

#E1DDB7

accent

#B71EC7

background

#F9F9FE

surface

#F2F2FC

border

#CCCCD5

text

#0E0D16

muted

#7E7E84

Preview Lab

Preview with #646FD8

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

Preview Lab → · Contrast checker → · Palette generator →