#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
RGBrgb(100, 107, 208)
HSLhsl(236, 53%, 60%)
HSVhsv(236, 52%, 82%)
CMYKcmyk(51.9%, 48.6%, 0%, 18.4%)
CIE-LABlab(49.23, 25.36, -53.26)
CIE-LCHlch(49.23, 58.99, 295.46°)
OKLaboklab(57.21% 0.0198 -0.1517)
OKLCHoklch(57.21% 0.153 277.4)
XYZxyz(21.8948, 17.7774, 61.9399)
Luminance0.1778 (WCAG relative)
Temperaturecool
Familyblue

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
##646BD01.004.614.564.61
#FFFFFF4.611.0021.001.00
#0000004.5621.001.0021.00
##FFFFFF4.611.0021.001.00

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 →

#646BD0 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva