#3F39C5#3F39C5

#3F39C5 is a mid, highly saturated blue. Relative luminance 0.080; OKLCH L 45.1% C 0.208 H 275.9°. Best body text is #FFFFFF at 8.07:1 contrast (WCAG AA passes).

Color values

HEX#3F39C5
RGBrgb(63, 57, 197)
HSLhsl(243, 55%, 50%)
HSVhsv(243, 71%, 77%)
CMYKcmyk(68%, 71.1%, 0%, 22.7%)
CIE-LABlab(34.01, 45.88, -71.74)
CIE-LCHlch(34.01, 85.15, 302.60°)
OKLaboklab(45.06% 0.0215 -0.2073)
OKLCHoklch(45.06% 0.208 275.9)
XYZxyz(13.5878, 8.0130, 53.6431)
Luminance0.0801 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3F39C5 #BFC539
analogous
#3979C5 #3F39C5 #8539C5
triadic
#3F39C5 #C53F39 #39C53F
tetradic
#3F39C5 #C53979 #BFC539 #39C585
square
#3F39C5 #C53979 #BFC539 #39C585
split-complementary
#3F39C5 #C58539 #79C539
monochromatic
#211E66 #302B96 #3F39C5 #6D68D3 #9B97E1

Accessibility & contrast

On white

8.07
#3F39C5 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.60
#3F39C5 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F39C5
8.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3F39C5#FFFFFF#000000##FFFFFF
##3F39C51.008.072.608.07
#FFFFFF8.071.0021.001.00
#0000002.6021.001.0021.00
##FFFFFF8.071.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0056C9
Deuteranopia (green-blind)
#004AC2
Tritanopia (blue-blind)
#00607B
Achromatopsia (no color)
#505050

Design tokens & code

CSS
--color: #3f39c5;
/* rgb */ color: rgb(63, 57, 197);
/* oklch */ color: oklch(45.1% 0.208 275.9);
Tailwind
colors: {
  custom: {
    50: '#8671d8',
    500: '#3f39c5',
    950: '#000000',
  },
}
SCSS
$custom: #3f39c5;
$custom-light: #8671d8;
$custom-dark: #000000;
JSON
{
  "hex": "#3f39c5",
  "rgb": {
    "r": 63,
    "g": 57,
    "b": 197
  },
  "hsl": {
    "h": 242.571,
    "s": 55.118,
    "l": 49.804
  },
  "oklch": {
    "l": 0.45062,
    "c": 0.20838,
    "h": 275.9
  },
  "luminance": 0.08014
}

Semantic roles & 50–950 ramp

primary
#3F39C5
secondary
#CACD8D
accent
#DE49D8
background
#F9F6FD
surface
#F1ECFB
border
#CBC7D4
text
#0D0815
muted
#7E7B83

Preview Lab

Preview with #3F39C5

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

Preview Lab → · Contrast checker → · Palette generator →

#3F39C5 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva