#3F48C9#3F48C9

#3F48C9 is a mid, vivid blue. Relative luminance 0.099; OKLCH L 47.8% C 0.197 H 273.2°. Best body text is #FFFFFF at 7.04:1 contrast (WCAG AA passes).

Color values

HEX#3F48C9
RGBrgb(63, 72, 201)
HSLhsl(236, 56%, 52%)
HSVhsv(236, 69%, 79%)
CMYKcmyk(68.7%, 64.2%, 0%, 21.2%)
CIE-LABlab(37.68, 38.28, -68.05)
CIE-LCHlch(37.68, 78.08, 299.36°)
OKLaboklab(47.82% 0.011 -0.1965)
OKLCHoklch(47.82% 0.197 273.2)
XYZxyz(14.9064, 9.9071, 56.3737)
Luminance0.0991 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3F48C9 #C9C03F
analogous
#3F8DC9 #3F48C9 #7B3FC9
triadic
#3F48C9 #C93F48 #48C93F
tetradic
#3F48C9 #C93F8D #C9C03F #3FC97B
square
#3F48C9 #C93F8D #C9C03F #3FC97B
split-complementary
#3F48C9 #C97B3F #8DC93F
monochromatic
#1F246F #2D349E #3F48C9 #6F76D6 #9FA3E4

Accessibility & contrast

On white

7.04
#3F48C9 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.98
#3F48C9 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F48C9
7.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3F48C9#FFFFFF#000000##FFFFFF
##3F48C91.007.042.987.04
#FFFFFF7.041.0021.001.00
#0000002.9821.001.0021.00
##FFFFFF7.041.0021.001.00

Color blindness preview

Protanopia (red-blind)
#005FCD
Deuteranopia (green-blind)
#0052C7
Tritanopia (blue-blind)
#006982
Achromatopsia (no color)
#595959

Design tokens & code

CSS
--color: #3f48c9;
/* rgb */ color: rgb(63, 72, 201);
/* oklch */ color: oklch(47.8% 0.197 273.2);
Tailwind
colors: {
  custom: {
    50: '#867bda',
    500: '#3f48c9',
    950: '#000000',
  },
}
SCSS
$custom: #3f48c9;
$custom-light: #867bda;
$custom-dark: #000000;
JSON
{
  "hex": "#3f48c9",
  "rgb": {
    "r": 63,
    "g": 72,
    "b": 201
  },
  "hsl": {
    "h": 236.087,
    "s": 56.098,
    "l": 51.765
  },
  "oklch": {
    "l": 0.47823,
    "c": 0.19678,
    "h": 273.2
  },
  "luminance": 0.09909
}

Semantic roles & 50–950 ramp

primary
#3F48C9
secondary
#D0CC94
accent
#D648DF
background
#F8F7FD
surface
#F0EEFB
border
#CBC9D4
text
#0D0915
muted
#7D7B83

Preview Lab

Preview with #3F48C9

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

Preview Lab → · Contrast checker → · Palette generator →

#3F48C9 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva