#3F49E0#3F49E0

#3F49E0 is a mid, highly saturated blue. Relative luminance 0.112; OKLCH L 50.1% C 0.225 H 272.1°. Best body text is #FFFFFF at 6.48:1 contrast (WCAG AA passes).

Color values

HEX#3F49E0
RGBrgb(63, 73, 224)
HSLhsl(236, 72%, 56%)
HSVhsv(236, 72%, 88%)
CMYKcmyk(71.9%, 67.4%, 0%, 12.2%)
CIE-LABlab(39.92, 45.48, -77.61)
CIE-LCHlch(39.92, 89.95, 300.37°)
OKLaboklab(50.07% 0.0084 -0.2244)
OKLCHoklch(50.07% 0.225 272.1)
XYZxyz(17.8825, 11.2018, 71.7263)
Luminance0.1120 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3F49E0 #E0D63F
analogous
#3F9AE0 #3F49E0 #863FE0
triadic
#3F49E0 #E03F49 #49E03F
tetradic
#3F49E0 #E03F9A #E0D63F #3FE086
square
#3F49E0 #E03F9A #E0D63F #3FE086
split-complementary
#3F49E0 #E0863F #9AE03F
monochromatic
#171E8E #1F2AC2 #3F49E0 #747BE9 #A8ADF1

Accessibility & contrast

On white

6.48
#3F49E0 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.24
#3F49E0 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F49E0
6.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3F49E0#FFFFFF#000000##FFFFFF
##3F49E01.006.483.246.48
#FFFFFF6.481.0021.001.00
#0000003.2421.001.0021.00
##FFFFFF6.481.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0066E5
Deuteranopia (green-blind)
#0056DD
Tritanopia (blue-blind)
#00728F
Achromatopsia (no color)
#5E5E5E

Design tokens & code

CSS
--color: #3f49e0;
/* rgb */ color: rgb(63, 73, 224);
/* oklch */ color: oklch(50.1% 0.225 272.1);
Tailwind
colors: {
  custom: {
    50: '#8a7ceb',
    500: '#3f49e0',
    950: '#000000',
  },
}
SCSS
$custom: #3f49e0;
$custom-light: #8a7ceb;
$custom-dark: #000000;
JSON
{
  "hex": "#3f49e0",
  "rgb": {
    "r": 63,
    "g": 73,
    "b": 224
  },
  "hsl": {
    "h": 236.273,
    "s": 72.197,
    "l": 56.275
  },
  "oklch": {
    "l": 0.50073,
    "c": 0.2246,
    "h": 272.1
  },
  "luminance": 0.11204
}

Semantic roles & 50–950 ramp

primary
#3F49E0
secondary
#DFDA9C
accent
#E439EF
background
#F9F7FE
surface
#F2EEFD
border
#CCC9D5
text
#0E0916
muted
#7E7B84

Preview Lab

Preview with #3F49E0

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

Preview Lab → · Contrast checker → · Palette generator →

#3F49E0 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva