#3F47E0#3F47E0

#3F47E0 is a mid, highly saturated blue. Relative luminance 0.109; OKLCH L 49.8% C 0.227 H 272.4°. Best body text is #FFFFFF at 6.59:1 contrast (WCAG AA passes).

Color values

HEX#3F47E0
RGBrgb(63, 71, 224)
HSLhsl(237, 72%, 56%)
HSVhsv(237, 72%, 88%)
CMYKcmyk(71.9%, 68.3%, 0%, 12.2%)
CIE-LABlab(39.48, 46.65, -78.32)
CIE-LCHlch(39.48, 91.17, 300.78°)
OKLaboklab(49.76% 0.0095 -0.2265)
OKLCHoklch(49.76% 0.227 272.4)
XYZxyz(17.7532, 10.9433, 71.6832)
Luminance0.1095 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3F47E0 #E0D83F
analogous
#3F98E0 #3F47E0 #883FE0
triadic
#3F47E0 #E03F47 #47E03F
tetradic
#3F47E0 #E03F98 #E0D83F #3FE088
square
#3F47E0 #E03F98 #E0D83F #3FE088
split-complementary
#3F47E0 #E0883F #98E03F
monochromatic
#171D8E #1F27C2 #3F47E0 #7479E9 #A8ACF1

Accessibility & contrast

On white

6.59
#3F47E0 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.19
#3F47E0 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F47E0
6.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3F47E0#FFFFFF#000000##FFFFFF
##3F47E01.006.593.196.59
#FFFFFF6.591.0021.001.00
#0000003.1921.001.0021.00
##FFFFFF6.591.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0065E5
Deuteranopia (green-blind)
#0055DD
Tritanopia (blue-blind)
#00718E
Achromatopsia (no color)
#5D5D5D

Design tokens & code

CSS
--color: #3f47e0;
/* rgb */ color: rgb(63, 71, 224);
/* oklch */ color: oklch(49.8% 0.227 272.4);
Tailwind
colors: {
  custom: {
    50: '#8a7beb',
    500: '#3f47e0',
    950: '#000000',
  },
}
SCSS
$custom: #3f47e0;
$custom-light: #8a7beb;
$custom-dark: #000000;
JSON
{
  "hex": "#3f47e0",
  "rgb": {
    "r": 63,
    "g": 71,
    "b": 224
  },
  "hsl": {
    "h": 237.019,
    "s": 72.197,
    "l": 56.275
  },
  "oklch": {
    "l": 0.49759,
    "c": 0.22673,
    "h": 272.4
  },
  "luminance": 0.10945
}

Semantic roles & 50–950 ramp

primary
#3F47E0
secondary
#DFDB9C
accent
#E639EF
background
#F9F7FE
surface
#F2EEFD
border
#CCC9D5
text
#0E0916
muted
#7E7B84

Preview Lab

Preview with #3F47E0

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

Preview Lab → · Contrast checker → · Palette generator →

#3F47E0 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva