#646BD7#646BD7

#646BD7 is a mid, vivid blue. Relative luminance 0.181; OKLCH L 57.7% C 0.163 H 277.2°. Best body text is #000000 at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#646BD7
RGB	rgb(100, 107, 215)
HSL	hsl(236, 59%, 62%)
HSV	hsv(236, 53%, 84%)
CMYK	cmyk(53.5%, 50.2%, 0%, 15.7%)
CIE-LAB	lab(49.65, 27.57, -56.56)
CIE-LCH	lch(49.65, 62.92, 295.99°)
OKLab	oklab(57.67% 0.0204 -0.1614)
OKLCH	oklch(57.67% 0.163 277.2)
XYZ	xyz(22.7751, 18.1295, 66.5760)
Luminance	0.1813 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646BD7 #D7D064

analogous

#64A5D7 #646BD7 #9764D7

triadic

#646BD7 #D7646B #6BD764

tetradic

#646BD7 #D764A5 #D7D064 #64D797

square

#646BD7 #D764A5 #D7D064 #64D797

split-complementary

#646BD7 #D79764 #A5D764

monochromatic

#282E99 #343DCA #646BD7 #9599E4 #C5C8F0

Accessibility & contrast

On white

4.54

#646BD7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.63

#646BD7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646BD7

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646BD7	#FFFFFF	#000000	##000000
##646BD7	1.00	4.54	4.63	4.63
#FFFFFF	4.54	1.00	21.00	21.00
#000000	4.63	21.00	1.00	1.00
##000000	4.63	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#347BDB

Deuteranopia (green-blind)

#2572D5

Tritanopia (blue-blind)

#2E8397

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #646bd7;
/* rgb */ color: rgb(100, 107, 215);
/* oklch */ color: oklch(57.7% 0.163 277.2);

Tailwind

colors: {
  custom: {
    50: '#9895e4',
    500: '#646bd7',
    950: '#000000',
  },
}

SCSS

$custom: #646bd7;
$custom-light: #9895e4;
$custom-dark: #000000;

JSON

{
  "hex": "#646bd7",
  "rgb": {
    "r": 100,
    "g": 107,
    "b": 215
  },
  "hsl": {
    "h": 236.348,
    "s": 58.974,
    "l": 61.765
  },
  "oklch": {
    "l": 0.57672,
    "c": 0.16274,
    "h": 277.2
  },
  "luminance": 0.18131
}

Semantic roles & 50–950 ramp

primary

#646BD7

secondary

#E1DEB6

accent

#BC1FC7

background

#F9F9FE

surface

#F2F1FC

border

#CCCBD5

text

#0E0D16

muted

#7E7E84

Preview Lab

Preview with #646BD7

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

Preview Lab → · Contrast checker → · Palette generator →