#3F49BE#3F49BE

#3F49BE is a mid, vivid blue. Relative luminance 0.095; OKLCH L 47.0% C 0.181 H 273.4°. Best body text is #FFFFFF at 7.22:1 contrast (WCAG AA passes).

Color values

HEX#3F49BE
RGBrgb(63, 73, 190)
HSLhsl(235, 50%, 50%)
HSVhsv(235, 67%, 75%)
CMYKcmyk(66.8%, 61.6%, 0%, 25.5%)
CIE-LABlab(37.00, 33.86, -62.74)
CIE-LCHlch(37.00, 71.29, 298.35°)
OKLaboklab(47.04% 0.0108 -0.1809)
OKLCHoklch(47.04% 0.181 273.4)
XYZxyz(13.7236, 9.5383, 49.8231)
Luminance0.0954 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3F49BE #BEB43F
analogous
#3F88BE #3F49BE #753FBE
triadic
#3F49BE #BE3F49 #49BE3F
tetradic
#3F49BE #BE3F88 #BEB43F #3FBE75
square
#3F49BE #BE3F88 #BEB43F #3FBE75
split-complementary
#3F49BE #BE753F #88BE3F
monochromatic
#212662 #303790 #3F49BE #6C74CE #9A9FDD

Accessibility & contrast

On white

7.22
#3F49BE on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.91
#3F49BE on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F49BE
7.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3F49BE#FFFFFF#000000##FFFFFF
##3F49BE1.007.222.917.22
#FFFFFF7.221.0021.001.00
#0000002.9121.001.0021.00
##FFFFFF7.221.0021.001.00

Color blindness preview

Protanopia (red-blind)
#005DC2
Deuteranopia (green-blind)
#0051BC
Tritanopia (blue-blind)
#00667C
Achromatopsia (no color)
#575757

Design tokens & code

CSS
--color: #3f49be;
/* rgb */ color: rgb(63, 73, 190);
/* oklch */ color: oklch(47.0% 0.181 273.4);
Tailwind
colors: {
  custom: {
    50: '#837cd3',
    500: '#3f49be',
    950: '#000000',
  },
}
SCSS
$custom: #3f49be;
$custom-light: #837cd3;
$custom-dark: #000000;
JSON
{
  "hex": "#3f49be",
  "rgb": {
    "r": 63,
    "g": 73,
    "b": 190
  },
  "hsl": {
    "h": 235.276,
    "s": 50.198,
    "l": 49.608
  },
  "oklch": {
    "l": 0.47045,
    "c": 0.18119,
    "h": 273.4
  },
  "luminance": 0.0954
}

Semantic roles & 50–950 ramp

primary
#3F49BE
secondary
#C9C58F
accent
#CF4EDA
background
#F8F7FD
surface
#F0EEFA
border
#CBC9D3
text
#0C0914
muted
#7D7B83

Preview Lab

Preview with #3F49BE

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

Preview Lab → · Contrast checker → · Palette generator →

#3F49BE Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva