#3F74D7#3F74D7

#3F74D7 is a mid, vivid blue. Relative luminance 0.185; OKLCH L 57.4% C 0.162 H 261.6°. Best body text is #000000 at 4.69:1 contrast (WCAG AA passes).

Color values

HEX#3F74D7
RGBrgb(63, 116, 215)
HSLhsl(219, 66%, 55%)
HSVhsv(219, 71%, 84%)
CMYKcmyk(70.7%, 46%, 0%, 15.7%)
CIE-LABlab(50.04, 15.48, -56.04)
CIE-LCHlch(50.04, 58.14, 285.44°)
OKLaboklab(57.44% -0.0238 -0.1606)
OKLCHoklch(57.44% 0.162 261.6)
XYZxyz(20.5566, 18.4517, 66.7550)
Luminance0.1845 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3F74D7 #D7A23F
analogous
#3FC0D7 #3F74D7 #563FD7
triadic
#3F74D7 #D73F74 #74D73F
tetradic
#3F74D7 #D73FC0 #D7A23F #3FD756
square
#3F74D7 #D73FC0 #D7A23F #3FD756
split-complementary
#3F74D7 #D7563F #C0D73F
monochromatic
#1B3E81 #2557B3 #3F74D7 #7299E2 #A4BDEC

Accessibility & contrast

On white

4.48
#3F74D7 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

4.69
#3F74D7 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F74D7
4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3F74D7#FFFFFF#000000##000000
##3F74D71.004.484.694.69
#FFFFFF4.481.0021.0021.00
#0000004.6921.001.001.00
##0000004.6921.001.001.00

Color blindness preview

Protanopia (red-blind)
#417FDB
Deuteranopia (green-blind)
#1F71D5
Tritanopia (blue-blind)
#008B9B
Achromatopsia (no color)
#777777

Design tokens & code

CSS
--color: #3f74d7;
/* rgb */ color: rgb(63, 116, 215);
/* oklch */ color: oklch(57.4% 0.162 261.6);
Tailwind
colors: {
  custom: {
    50: '#869be4',
    500: '#3f74d7',
    950: '#000000',
  },
}
SCSS
$custom: #3f74d7;
$custom-light: #869be4;
$custom-dark: #000000;
JSON
{
  "hex": "#3f74d7",
  "rgb": {
    "r": 63,
    "g": 116,
    "b": 215
  },
  "hsl": {
    "h": 219.079,
    "s": 65.517,
    "l": 54.51
  },
  "oklch": {
    "l": 0.57437,
    "c": 0.16234,
    "h": 261.6
  },
  "luminance": 0.18454
}

Semantic roles & 50–950 ramp

primary
#3F74D7
secondary
#D9C399
accent
#AD3FE8
background
#F8F9FE
surface
#F0F2FC
border
#CBCCD5
text
#0C0E16
muted
#7D7E84

Preview Lab

Preview with #3F74D7

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

Preview Lab → · Contrast checker → · Palette generator →

#3F74D7 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva