#3F6ED9#3F6ED9

#3F6ED9 is a mid, vivid blue. Relative luminance 0.172; OKLCH L 56.3% C 0.172 H 263.9°. Best body text is #FFFFFF at 4.73:1 contrast (WCAG AA passes).

Color values

HEX#3F6ED9
RGBrgb(63, 110, 217)
HSLhsl(222, 67%, 55%)
HSVhsv(222, 71%, 85%)
CMYKcmyk(71%, 49.3%, 0%, 14.9%)
CIE-LABlab(48.53, 19.96, -59.60)
CIE-LCHlch(48.53, 62.86, 288.52°)
OKLaboklab(56.32% -0.0183 -0.1712)
OKLCHoklch(56.32% 0.172 263.9)
XYZxyz(20.1458, 17.2163, 67.8935)
Luminance0.1722 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3F6ED9 #D9AA3F
analogous
#3FBBD9 #3F6ED9 #5D3FD9
triadic
#3F6ED9 #D93F6E #6ED93F
tetradic
#3F6ED9 #D93FBB #D9AA3F #3FD95D
square
#3F6ED9 #D93FBB #D9AA3F #3FD95D
split-complementary
#3F6ED9 #D95D3F #BBD93F
monochromatic
#1A3A84 #2451B7 #3F6ED9 #7295E3 #A5BBED

Accessibility & contrast

On white

4.73
#3F6ED9 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

4.44
#3F6ED9 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6ED9
4.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3F6ED9#FFFFFF#000000##FFFFFF
##3F6ED91.004.734.444.73
#FFFFFF4.731.0021.001.00
#0000004.4421.001.0021.00
##FFFFFF4.731.0021.001.00

Color blindness preview

Protanopia (red-blind)
#307BDD
Deuteranopia (green-blind)
#006DD7
Tritanopia (blue-blind)
#008799
Achromatopsia (no color)
#737373

Design tokens & code

CSS
--color: #3f6ed9;
/* rgb */ color: rgb(63, 110, 217);
/* oklch */ color: oklch(56.3% 0.172 263.9);
Tailwind
colors: {
  custom: {
    50: '#8697e5',
    500: '#3f6ed9',
    950: '#000000',
  },
}
SCSS
$custom: #3f6ed9;
$custom-light: #8697e5;
$custom-dark: #000000;
JSON
{
  "hex": "#3f6ed9",
  "rgb": {
    "r": 63,
    "g": 110,
    "b": 217
  },
  "hsl": {
    "h": 221.688,
    "s": 66.957,
    "l": 54.902
  },
  "oklch": {
    "l": 0.56322,
    "c": 0.17214,
    "h": 263.9
  },
  "luminance": 0.17218
}

Semantic roles & 50–950 ramp

primary
#3F6ED9
secondary
#DAC79A
accent
#B53EEA
background
#F9F9FE
surface
#F1F2FC
border
#CBCCD5
text
#0D0D16
muted
#7E7E84

Preview Lab

Preview with #3F6ED9

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

Preview Lab → · Contrast checker → · Palette generator →

#3F6ED9 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva