#3F74DA#3F74DA

#3F74DA is a mid, vivid blue. Relative luminance 0.186; OKLCH L 57.6% C 0.166 H 261.9°. Best body text is #000000 at 4.72:1 contrast (WCAG AA passes).

Color values

HEX#3F74DA
RGBrgb(63, 116, 218)
HSLhsl(219, 68%, 55%)
HSVhsv(219, 71%, 85%)
CMYKcmyk(71.1%, 46.8%, 0%, 14.5%)
CIE-LABlab(50.22, 16.56, -57.44)
CIE-LCHlch(50.22, 59.78, 286.08°)
OKLaboklab(57.64% -0.0233 -0.1647)
OKLCHoklch(57.64% 0.166 261.9)
XYZxyz(20.9457, 18.6073, 68.8038)
Luminance0.1861 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3F74DA #DAA53F
analogous
#3FC1DA #3F74DA #573FDA
triadic
#3F74DA #DA3F74 #74DA3F
tetradic
#3F74DA #DA3FC1 #DAA53F #3FDA57
square
#3F74DA #DA3FC1 #DAA53F #3FDA57
split-complementary
#3F74DA #DA573F #C1DA3F
monochromatic
#1A3E85 #2456B8 #3F74DA #7299E4 #A6BEEE

Accessibility & contrast

On white

4.45
#3F74DA on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

4.72
#3F74DA on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F74DA
4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3F74DA#FFFFFF#000000##000000
##3F74DA1.004.454.724.72
#FFFFFF4.451.0021.0021.00
#0000004.7221.001.001.00
##0000004.7221.001.001.00

Color blindness preview

Protanopia (red-blind)
#3E7FDE
Deuteranopia (green-blind)
#1771D8
Tritanopia (blue-blind)
#008C9C
Achromatopsia (no color)
#777777

Design tokens & code

CSS
--color: #3f74da;
/* rgb */ color: rgb(63, 116, 218);
/* oklch */ color: oklch(57.6% 0.166 261.9);
Tailwind
colors: {
  custom: {
    50: '#869be6',
    500: '#3f74da',
    950: '#000000',
  },
}
SCSS
$custom: #3f74da;
$custom-light: #869be6;
$custom-dark: #000000;
JSON
{
  "hex": "#3f74da",
  "rgb": {
    "r": 63,
    "g": 116,
    "b": 218
  },
  "hsl": {
    "h": 219.484,
    "s": 67.686,
    "l": 55.098
  },
  "oklch": {
    "l": 0.57638,
    "c": 0.16635,
    "h": 261.9
  },
  "luminance": 0.18609
}

Semantic roles & 50–950 ramp

primary
#3F74DA
secondary
#DBC59A
accent
#AF3DEB
background
#F8F9FE
surface
#F0F2FC
border
#CBCCD5
text
#0D0E16
muted
#7D7E84

Preview Lab

Preview with #3F74DA

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

Preview Lab → · Contrast checker → · Palette generator →

#3F74DA Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva