#646BD6#646BD6

#646BD6 is a mid, vivid blue. Relative luminance 0.181; OKLCH L 57.6% C 0.161 H 277.2°. Best body text is #000000 at 4.62:1 contrast (WCAG AA passes).

Color values

HEX	#646BD6
RGB	rgb(100, 107, 214)
HSL	hsl(236, 58%, 62%)
HSV	hsv(236, 53%, 84%)
CMYK	cmyk(53.3%, 50%, 0%, 16.1%)
CIE-LAB	lab(49.59, 27.26, -56.09)
CIE-LCH	lch(49.59, 62.36, 295.92°)
OKLab	oklab(57.61% 0.0203 -0.1601)
OKLCH	oklch(57.61% 0.161 277.2)
XYZ	xyz(22.6470, 18.0783, 65.9014)
Luminance	0.1808 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646BD6 #D6CF64

analogous

#64A4D6 #646BD6 #9664D6

triadic

#646BD6 #D6646B #6BD664

tetradic

#646BD6 #D664A4 #D6CF64 #64D696

square

#646BD6 #D664A4 #D6CF64 #64D696

split-complementary

#646BD6 #D69664 #A4D664

monochromatic

#282F98 #353EC8 #646BD6 #9499E3 #C5C7F0

Accessibility & contrast

On white

4.55

#646BD6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.62

#646BD6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646BD6

4.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646BD6	#FFFFFF	#000000	##000000
##646BD6	1.00	4.55	4.62	4.62
#FFFFFF	4.55	1.00	21.00	21.00
#000000	4.62	21.00	1.00	1.00
##000000	4.62	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#367BDA

Deuteranopia (green-blind)

#2771D4

Tritanopia (blue-blind)

#2F8396

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #646bd6;
/* rgb */ color: rgb(100, 107, 214);
/* oklch */ color: oklch(57.6% 0.161 277.2);

Tailwind

colors: {
  custom: {
    50: '#9895e3',
    500: '#646bd6',
    950: '#000000',
  },
}

SCSS

$custom: #646bd6;
$custom-light: #9895e3;
$custom-dark: #000000;

JSON

{
  "hex": "#646bd6",
  "rgb": {
    "r": 100,
    "g": 107,
    "b": 214
  },
  "hsl": {
    "h": 236.316,
    "s": 58.163,
    "l": 61.569
  },
  "oklch": {
    "l": 0.57605,
    "c": 0.16136,
    "h": 277.2
  },
  "luminance": 0.1808
}

Semantic roles & 50–950 ramp

primary

#646BD6

secondary

#E0DEB6

accent

#BC20C6

background

#F9F9FE

surface

#F2F1FC

border

#CCCBD5

text

#0E0D15

muted

#7E7E84

Preview Lab

Preview with #646BD6

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

Preview Lab → · Contrast checker → · Palette generator →