#3F6FD5#3F6FD5

#3F6FD5 is a mid, vivid blue. Relative luminance 0.172; OKLCH L 56.3% C 0.166 H 263.2°. Best body text is #FFFFFF at 4.72:1 contrast (WCAG AA passes).

Color values

HEX#3F6FD5
RGBrgb(63, 111, 213)
HSLhsl(221, 64%, 54%)
HSVhsv(221, 70%, 84%)
CMYKcmyk(70.4%, 47.9%, 0%, 16.5%)
CIE-LABlab(48.55, 17.89, -57.31)
CIE-LCHlch(48.55, 60.04, 287.34°)
OKLaboklab(56.25% -0.0197 -0.1644)
OKLCHoklch(56.25% 0.166 263.2)
XYZxyz(19.7403, 17.2277, 65.2228)
Luminance0.1723 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3F6FD5 #D5A53F
analogous
#3FBAD5 #3F6FD5 #5A3FD5
triadic
#3F6FD5 #D53F6F #6FD53F
tetradic
#3F6FD5 #D53FBA #D5A53F #3FD55A
square
#3F6FD5 #D53FBA #D5A53F #3FD55A
split-complementary
#3F6FD5 #D55A3F #BAD53F
monochromatic
#1C3B7E #2753B0 #3F6FD5 #7195E0 #A3BAEB

Accessibility & contrast

On white

4.72
#3F6FD5 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

4.45
#3F6FD5 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6FD5
4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3F6FD5#FFFFFF#000000##FFFFFF
##3F6FD51.004.724.454.72
#FFFFFF4.721.0021.001.00
#0000004.4521.001.0021.00
##FFFFFF4.721.0021.001.00

Color blindness preview

Protanopia (red-blind)
#377BD9
Deuteranopia (green-blind)
#0B6DD3
Tritanopia (blue-blind)
#008798
Achromatopsia (no color)
#737373

Design tokens & code

CSS
--color: #3f6fd5;
/* rgb */ color: rgb(63, 111, 213);
/* oklch */ color: oklch(56.3% 0.166 263.2);
Tailwind
colors: {
  custom: {
    50: '#8697e2',
    500: '#3f6fd5',
    950: '#000000',
  },
}
SCSS
$custom: #3f6fd5;
$custom-light: #8697e2;
$custom-dark: #000000;
JSON
{
  "hex": "#3f6fd5",
  "rgb": {
    "r": 63,
    "g": 111,
    "b": 213
  },
  "hsl": {
    "h": 220.8,
    "s": 64.103,
    "l": 54.118
  },
  "oklch": {
    "l": 0.56251,
    "c": 0.16557,
    "h": 263.2
  },
  "luminance": 0.1723
}

Semantic roles & 50–950 ramp

primary
#3F6FD5
secondary
#D8C398
accent
#B241E7
background
#F8F9FD
surface
#F0F2FB
border
#CBCCD4
text
#0C0D15
muted
#7D7E83

Preview Lab

Preview with #3F6FD5

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

Preview Lab → · Contrast checker → · Palette generator →

#3F6FD5 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva