#3F39CF#3F39CF

#3F39CF is a mid, highly saturated blue. Relative luminance 0.085; OKLCH L 46.0% C 0.221 H 275.1°. Best body text is #FFFFFF at 7.78:1 contrast (WCAG AA passes).

Color values

HEX#3F39CF
RGBrgb(63, 57, 207)
HSLhsl(242, 61%, 52%)
HSVhsv(242, 72%, 81%)
CMYKcmyk(69.6%, 72.5%, 0%, 18.8%)
CIE-LABlab(34.98, 49.10, -75.97)
CIE-LCHlch(34.98, 90.45, 302.87°)
OKLaboklab(46.04% 0.0197 -0.2196)
OKLCHoklch(46.04% 0.221 275.1)
XYZxyz(14.7718, 8.4866, 59.8790)
Luminance0.0849 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3F39CF #C9CF39
analogous
#397ECF #3F39CF #8A39CF
triadic
#3F39CF #CF3F39 #39CF3F
tetradic
#3F39CF #CF397E #C9CF39 #39CF8A
square
#3F39CF #CF397E #C9CF39 #39CF8A
split-complementary
#3F39CF #CF8A39 #7ECF39
monochromatic
#1F1C72 #2D28A3 #3F39CF #6F6ADB #9F9CE7

Accessibility & contrast

On white

7.78
#3F39CF on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.70
#3F39CF on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F39CF
7.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3F39CF#FFFFFF#000000##FFFFFF
##3F39CF1.007.782.707.78
#FFFFFF7.781.0021.001.00
#0000002.7021.001.0021.00
##FFFFFF7.781.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0059D3
Deuteranopia (green-blind)
#004BCC
Tritanopia (blue-blind)
#006481
Achromatopsia (no color)
#525252

Design tokens & code

CSS
--color: #3f39cf;
/* rgb */ color: rgb(63, 57, 207);
/* oklch */ color: oklch(46.0% 0.221 275.1);
Tailwind
colors: {
  custom: {
    50: '#8871df',
    500: '#3f39cf',
    950: '#000000',
  },
}
SCSS
$custom: #3f39cf;
$custom-light: #8871df;
$custom-dark: #000000;
JSON
{
  "hex": "#3f39cf",
  "rgb": {
    "r": 63,
    "g": 57,
    "b": 207
  },
  "hsl": {
    "h": 242.4,
    "s": 60.976,
    "l": 51.765
  },
  "oklch": {
    "l": 0.46042,
    "c": 0.2205,
    "h": 275.1
  },
  "luminance": 0.08488
}

Semantic roles & 50–950 ramp

primary
#3F39CF
secondary
#D0D391
accent
#E444DE
background
#F9F6FD
surface
#F1ECFB
border
#CBC7D4
text
#0D0815
muted
#7E7B83

Preview Lab

Preview with #3F39CF

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

Preview Lab → · Contrast checker → · Palette generator →

#3F39CF Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva