#647CD9#647CD9

#647CD9 is a mid, vivid blue. Relative luminance 0.221; OKLCH L 61.1% C 0.143 H 270.8°. Best body text is #000000 at 5.43:1 contrast (WCAG AA passes).

Color values

HEX#647CD9
RGBrgb(100, 124, 217)
HSLhsl(228, 61%, 62%)
HSVhsv(228, 54%, 85%)
CMYKcmyk(53.9%, 42.9%, 0%, 14.9%)
CIE-LABlab(54.17, 17.84, -50.47)
CIE-LCHlch(54.17, 53.53, 289.47°)
OKLaboklab(61.14% 0.0019 -0.1434)
OKLCHoklch(61.14% 0.143 270.8)
XYZxyz(24.9835, 22.1326, 68.5877)
Luminance0.2213 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#647CD9 #D9C164
analogous
#64B7D9 #647CD9 #8664D9
triadic
#647CD9 #D9647C #7CD964
tetradic
#647CD9 #D964B7 #D9C164 #64D986
square
#647CD9 #D964B7 #D9C164 #64D986
split-complementary
#647CD9 #D98664 #B7D964
monochromatic
#263F9C #3352CD #647CD9 #95A6E5 #C6CFF1

Accessibility & contrast

On white

3.87
#647CD9 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.43
#647CD9 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647CD9
5.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##647CD9#FFFFFF#000000##000000
##647CD91.003.875.435.43
#FFFFFF3.871.0021.0021.00
#0000005.4321.001.001.00
##0000005.4321.001.001.00

Color blindness preview

Protanopia (red-blind)
#5487DD
Deuteranopia (green-blind)
#467DD7
Tritanopia (blue-blind)
#2790A0
Achromatopsia (no color)
#818181

Design tokens & code

CSS
--color: #647cd9;
/* rgb */ color: rgb(100, 124, 217);
/* oklch */ color: oklch(61.1% 0.143 270.8);
Tailwind
colors: {
  custom: {
    50: '#98a1e5',
    500: '#647cd9',
    950: '#000000',
  },
}
SCSS
$custom: #647cd9;
$custom-light: #98a1e5;
$custom-dark: #000000;
JSON
{
  "hex": "#647cd9",
  "rgb": {
    "r": 100,
    "g": 124,
    "b": 217
  },
  "hsl": {
    "h": 227.692,
    "s": 60.622,
    "l": 62.157
  },
  "oklch": {
    "l": 0.61139,
    "c": 0.14341,
    "h": 270.8
  },
  "luminance": 0.22134
}

Semantic roles & 50–950 ramp

primary
#647CD9
secondary
#E2D9B7
accent
#A51DC8
background
#F9F9FE
surface
#F2F2FC
border
#CCCCD5
text
#0E0E16
muted
#7E7E84

Preview Lab

Preview with #647CD9

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

Preview Lab → · Contrast checker → · Palette generator →

#647CD9 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva