#647DB1#647DB1

#647DB1 is a mid, moderate blue. Relative luminance 0.206; OKLCH L 59.2% C 0.085 H 264.2°. Best body text is #000000 at 5.11:1 contrast (WCAG AA passes).

Color values

HEX#647DB1
RGBrgb(100, 125, 177)
HSLhsl(221, 33%, 54%)
HSVhsv(221, 44%, 69%)
CMYKcmyk(43.5%, 29.4%, 0%, 30.6%)
CIE-LABlab(52.45, 4.91, -30.37)
CIE-LCHlch(52.45, 30.76, 279.18°)
OKLaboklab(59.17% -0.0085 -0.0849)
OKLCHoklch(59.17% 0.085 264.2)
XYZxyz(20.5224, 20.5497, 44.4716)
Luminance0.2055 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#647DB1 #B19864
analogous
#64A4B1 #647DB1 #7264B1
triadic
#647DB1 #B1647D #7DB164
tetradic
#647DB1 #B164A4 #B19864 #64B172
square
#647DB1 #B164A4 #B19864 #64B172
split-complementary
#647DB1 #B17264 #A4B164
monochromatic
#344467 #485F90 #647DB1 #8D9FC5 #B5C1DA

Accessibility & contrast

On white

4.11
#647DB1 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.11
#647DB1 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #647DB1
5.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##647DB1#FFFFFF#000000##000000
##647DB11.004.115.115.11
#FFFFFF4.111.0021.0021.00
#0000005.1121.001.001.00
##0000005.1121.001.001.00

Color blindness preview

Protanopia (red-blind)
#6A81B3
Deuteranopia (green-blind)
#627AB0
Tritanopia (blue-blind)
#48888F
Achromatopsia (no color)
#7D7D7D

Design tokens & code

CSS
--color: #647db1;
/* rgb */ color: rgb(100, 125, 177);
/* oklch */ color: oklch(59.2% 0.085 264.2);
Tailwind
colors: {
  custom: {
    50: '#93a2c8',
    500: '#647db1',
    950: '#000000',
  },
}
SCSS
$custom: #647db1;
$custom-light: #93a2c8;
$custom-dark: #000000;
JSON
{
  "hex": "#647db1",
  "rgb": {
    "r": 100,
    "g": 125,
    "b": 177
  },
  "hsl": {
    "h": 220.519,
    "s": 33.047,
    "l": 54.314
  },
  "oklch": {
    "l": 0.59165,
    "c": 0.08531,
    "h": 264.2
  },
  "luminance": 0.20551
}

Semantic roles & 50–950 ramp

primary
#647DB1
secondary
#C9BEA8
accent
#A75FC9
background
#F9F9FC
surface
#F2F2F8
border
#CCCCD1
text
#0D0F13
muted
#7E7E82

Preview Lab

Preview with #647DB1

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

Preview Lab → · Contrast checker → · Palette generator →

#647DB1 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva