#646ABD#646ABD

#646ABD is a mid, vivid blue. Relative luminance 0.167; OKLCH L 55.8% C 0.127 H 278.3°. Best body text is #FFFFFF at 4.84:1 contrast (WCAG AA passes).

Color values

HEX#646ABD
RGBrgb(100, 106, 189)
HSLhsl(236, 40%, 57%)
HSVhsv(236, 47%, 74%)
CMYKcmyk(47.1%, 43.9%, 0%, 25.9%)
CIE-LABlab(47.87, 20.07, -44.52)
CIE-LCHlch(47.87, 48.83, 294.27°)
OKLaboklab(55.83% 0.0184 -0.1261)
OKLCHoklch(55.83% 0.127 278.3)
XYZxyz(19.5921, 16.6905, 50.3235)
Luminance0.1669 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#646ABD #BDB764
analogous
#6497BD #646ABD #8B64BD
triadic
#646ABD #BD646A #6ABD64
tetradic
#646ABD #BD6497 #BDB764 #64BD8B
square
#646ABD #BD6497 #BDB764 #64BD8B
split-complementary
#646ABD #BD8B64 #97BD64
monochromatic
#323675 #444AA0 #646ABD #8F93CF #BABDE2

Accessibility & contrast

On white

4.84
#646ABD on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

4.34
#646ABD on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646ABD
4.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##646ABD#FFFFFF#000000##FFFFFF
##646ABD1.004.844.344.84
#FFFFFF4.841.0021.001.00
#0000004.3421.001.0021.00
##FFFFFF4.841.0021.001.00

Color blindness preview

Protanopia (red-blind)
#4975C0
Deuteranopia (green-blind)
#426EBB
Tritanopia (blue-blind)
#447B8A
Achromatopsia (no color)
#727272

Design tokens & code

CSS
--color: #646abd;
/* rgb */ color: rgb(100, 106, 189);
/* oklch */ color: oklch(55.8% 0.127 278.3);
Tailwind
colors: {
  custom: {
    50: '#9594d1',
    500: '#646abd',
    950: '#000000',
  },
}
SCSS
$custom: #646abd;
$custom-light: #9594d1;
$custom-dark: #000000;
JSON
{
  "hex": "#646abd",
  "rgb": {
    "r": 100,
    "g": 106,
    "b": 189
  },
  "hsl": {
    "h": 235.955,
    "s": 40.271,
    "l": 56.667
  },
  "oklch": {
    "l": 0.55826,
    "c": 0.12743,
    "h": 278.3
  },
  "luminance": 0.16692
}

Semantic roles & 50–950 ramp

primary
#646ABD
secondary
#D1CEAC
accent
#C858D0
background
#F9F9FC
surface
#F2F1F9
border
#CCCBD2
text
#0E0D14
muted
#7E7E82

Preview Lab

Preview with #646ABD

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

Preview Lab → · Contrast checker → · Palette generator →

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