#646BD8#646BD8

#646BD8 is a mid, vivid blue. Relative luminance 0.182; OKLCH L 57.7% C 0.164 H 277.2°. Best body text is #000000 at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#646BD8
RGB	rgb(100, 107, 216)
HSL	hsl(236, 60%, 62%)
HSV	hsv(236, 54%, 85%)
CMYK	cmyk(53.7%, 50.5%, 0%, 15.3%)
CIE-LAB	lab(49.72, 27.89, -57.03)
CIE-LCH	lch(49.72, 63.48, 296.06°)
OKLab	oklab(57.74% 0.0205 -0.1628)
OKLCH	oklch(57.74% 0.164 277.2)
XYZ	xyz(22.9040, 18.1811, 67.2548)
Luminance	0.1818 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646BD8 #D8D164

analogous

#64A5D8 #646BD8 #9764D8

triadic

#646BD8 #D8646B #6BD864

tetradic

#646BD8 #D864A5 #D8D164 #64D897

square

#646BD8 #D864A5 #D8D164 #64D897

split-complementary

#646BD8 #D89764 #A5D864

monochromatic

#272E9B #333CCC #646BD8 #959AE4 #C6C8F1

Accessibility & contrast

On white

4.53

#646BD8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.64

#646BD8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646BD8

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646BD8	#FFFFFF	#000000	##000000
##646BD8	1.00	4.53	4.64	4.64
#FFFFFF	4.53	1.00	21.00	21.00
#000000	4.64	21.00	1.00	1.00
##000000	4.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#337BDC

Deuteranopia (green-blind)

#2372D6

Tritanopia (blue-blind)

#2D8397

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #646bd8;
/* rgb */ color: rgb(100, 107, 216);
/* oklch */ color: oklch(57.7% 0.164 277.2);

Tailwind

colors: {
  custom: {
    50: '#9895e5',
    500: '#646bd8',
    950: '#000000',
  },
}

SCSS

$custom: #646bd8;
$custom-light: #9895e5;
$custom-dark: #000000;

JSON

{
  "hex": "#646bd8",
  "rgb": {
    "r": 100,
    "g": 107,
    "b": 216
  },
  "hsl": {
    "h": 236.379,
    "s": 59.794,
    "l": 61.961
  },
  "oklch": {
    "l": 0.57738,
    "c": 0.16411,
    "h": 277.2
  },
  "luminance": 0.18183
}

Semantic roles & 50–950 ramp

primary

#646BD8

secondary

#E1DFB7

accent

#BD1EC7

background

#F9F9FE

surface

#F2F1FC

border

#CCCBD5

text

#0E0D16

muted

#7E7E84

Preview Lab

Preview with #646BD8

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

Preview Lab → · Contrast checker → · Palette generator →