#3F6DD3#3F6DD3

#3F6DD3 is a mid, vivid blue. Relative luminance 0.167; OKLCH L 55.7% C 0.165 H 263.7°. Best body text is #FFFFFF at 4.84:1 contrast (WCAG AA passes).

Color values

HEX#3F6DD3
RGBrgb(63, 109, 211)
HSLhsl(221, 63%, 54%)
HSVhsv(221, 70%, 83%)
CMYKcmyk(70.1%, 48.3%, 0%, 17.3%)
CIE-LABlab(47.87, 18.43, -57.25)
CIE-LCHlch(47.87, 60.14, 287.84°)
OKLaboklab(55.7% -0.0182 -0.1643)
OKLCHoklch(55.7% 0.165 263.7)
XYZxyz(19.2723, 16.6952, 63.8222)
Luminance0.1670 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3F6DD3 #D3A53F
analogous
#3FB7D3 #3F6DD3 #5B3FD3
triadic
#3F6DD3 #D33F6D #6DD33F
tetradic
#3F6DD3 #D33FB7 #D3A53F #3FD35B
square
#3F6DD3 #D33FB7 #D3A53F #3FD35B
split-complementary
#3F6DD3 #D35B3F #B7D33F
monochromatic
#1C3A7B #2851AD #3F6DD3 #7193DE #A3B9EA

Accessibility & contrast

On white

4.84
#3F6DD3 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

4.34
#3F6DD3 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6DD3
4.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3F6DD3#FFFFFF#000000##FFFFFF
##3F6DD31.004.844.344.84
#FFFFFF4.841.0021.001.00
#0000004.3421.001.0021.00
##FFFFFF4.841.0021.001.00

Color blindness preview

Protanopia (red-blind)
#3579D7
Deuteranopia (green-blind)
#056BD1
Tritanopia (blue-blind)
#008596
Achromatopsia (no color)
#727272

Design tokens & code

CSS
--color: #3f6dd3;
/* rgb */ color: rgb(63, 109, 211);
/* oklch */ color: oklch(55.7% 0.165 263.7);
Tailwind
colors: {
  custom: {
    50: '#8596e1',
    500: '#3f6dd3',
    950: '#000000',
  },
}
SCSS
$custom: #3f6dd3;
$custom-light: #8596e1;
$custom-dark: #000000;
JSON
{
  "hex": "#3f6dd3",
  "rgb": {
    "r": 63,
    "g": 109,
    "b": 211
  },
  "hsl": {
    "h": 221.351,
    "s": 62.712,
    "l": 53.725
  },
  "oklch": {
    "l": 0.55696,
    "c": 0.16527,
    "h": 263.7
  },
  "luminance": 0.16697
}

Semantic roles & 50–950 ramp

primary
#3F6DD3
secondary
#D7C397
accent
#B342E6
background
#F8F9FD
surface
#F0F1FB
border
#CBCBD4
text
#0C0D15
muted
#7D7E83

Preview Lab

Preview with #3F6DD3

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

Preview Lab → · Contrast checker → · Palette generator →

#3F6DD3 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva