#646BD0#646BD0

#646BD0 is a mid, vivid blue. Relative luminance 0.178; OKLCH L 57.2% C 0.153 H 277.4°. Best body text is #FFFFFF at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#646BD0
RGB	rgb(100, 107, 208)
HSL	hsl(236, 53%, 60%)
HSV	hsv(236, 52%, 82%)
CMYK	cmyk(51.9%, 48.6%, 0%, 18.4%)
CIE-LAB	lab(49.23, 25.36, -53.26)
CIE-LCH	lch(49.23, 58.99, 295.46°)
OKLab	oklab(57.21% 0.0198 -0.1517)
OKLCH	oklch(57.21% 0.153 277.4)
XYZ	xyz(21.8948, 17.7774, 61.9399)
Luminance	0.1778 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646BD0 #D0C964

analogous

#64A1D0 #646BD0 #9364D0

triadic

#646BD0 #D0646B #6BD064

tetradic

#646BD0 #D064A1 #D0C964 #64D093

square

#646BD0 #D064A1 #D0C964 #64D093

split-complementary

#646BD0 #D09364 #A1D064

monochromatic

#2B328E #3942BD #646BD0 #9398DE #C2C5EC

Accessibility & contrast

On white

4.61

#646BD0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.56

#646BD0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #646BD0

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646BD0	#FFFFFF	#000000	##FFFFFF
##646BD0	1.00	4.61	4.56	4.61
#FFFFFF	4.61	1.00	21.00	1.00
#000000	4.56	21.00	1.00	21.00
##FFFFFF	4.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C79D4

Deuteranopia (green-blind)

#3071CE

Tritanopia (blue-blind)

#358193

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #646bd0;
/* rgb */ color: rgb(100, 107, 208);
/* oklch */ color: oklch(57.2% 0.153 277.4);

Tailwind

colors: {
  custom: {
    50: '#9795df',
    500: '#646bd0',
    950: '#000000',
  },
}

SCSS

$custom: #646bd0;
$custom-light: #9795df;
$custom-dark: #000000;

JSON

{
  "hex": "#646bd0",
  "rgb": {
    "r": 100,
    "g": 107,
    "b": 208
  },
  "hsl": {
    "h": 236.111,
    "s": 53.465,
    "l": 60.392
  },
  "oklch": {
    "l": 0.57211,
    "c": 0.15303,
    "h": 277.4
  },
  "luminance": 0.17779
}

Semantic roles & 50–950 ramp

primary

#646BD0

secondary

#DDDAB3

accent

#B725C1

background

#F9F9FD

surface

#F2F1FB

border

#CCCBD4

text

#0E0D15

muted

#7E7E83

Preview Lab

Preview with #646BD0

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

Preview Lab → · Contrast checker → · Palette generator →