#3F44B9#3F44B9

#3F44B9 is a mid, vivid blue. Relative luminance 0.087; OKLCH L 45.7% C 0.181 H 274.8°. Best body text is #FFFFFF at 7.67:1 contrast (WCAG AA passes).

Color values

HEX#3F44B9
RGBrgb(63, 68, 185)
HSLhsl(238, 49%, 49%)
HSVhsv(238, 66%, 73%)
CMYKcmyk(65.9%, 63.2%, 0%, 27.5%)
CIE-LABlab(35.39, 35.27, -62.44)
CIE-LCHlch(35.39, 71.71, 299.46°)
OKLaboklab(45.73% 0.0151 -0.18)
OKLCHoklch(45.73% 0.181 274.8)
XYZxyz(12.8711, 8.6927, 46.8891)
Luminance0.0869 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3F44B9 #B9B43F
analogous
#3F81B9 #3F44B9 #773FB9
triadic
#3F44B9 #B93F44 #44B93F
tetradic
#3F44B9 #B93F81 #B9B43F #3FB977
square
#3F44B9 #B93F81 #B9B43F #3FB977
split-complementary
#3F44B9 #B9773F #81B93F
monochromatic
#20225E #2F338B #3F44B9 #696DCC #979ADC

Accessibility & contrast

On white

7.67
#3F44B9 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.74
#3F44B9 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F44B9
7.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3F44B9#FFFFFF#000000##FFFFFF
##3F44B91.007.672.747.67
#FFFFFF7.671.0021.001.00
#0000002.7421.001.0021.00
##FFFFFF7.671.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0059BD
Deuteranopia (green-blind)
#004EB7
Tritanopia (blue-blind)
#006278
Achromatopsia (no color)
#535353

Design tokens & code

CSS
--color: #3f44b9;
/* rgb */ color: rgb(63, 68, 185);
/* oklch */ color: oklch(45.7% 0.181 274.8);
Tailwind
colors: {
  custom: {
    50: '#8378cf',
    500: '#3f44b9',
    950: '#000000',
  },
}
SCSS
$custom: #3f44b9;
$custom-light: #8378cf;
$custom-dark: #000000;
JSON
{
  "hex": "#3f44b9",
  "rgb": {
    "r": 63,
    "g": 68,
    "b": 185
  },
  "hsl": {
    "h": 237.541,
    "s": 49.194,
    "l": 48.627
  },
  "oklch": {
    "l": 0.4573,
    "c": 0.18065,
    "h": 274.8
  },
  "luminance": 0.08694
}

Semantic roles & 50–950 ramp

primary
#3F44B9
secondary
#C7C58D
accent
#D34FD9
background
#F8F7FC
surface
#F0EDF9
border
#CBC8D2
text
#0C0914
muted
#7D7B82

Preview Lab

Preview with #3F44B9

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

Preview Lab → · Contrast checker → · Palette generator →

#3F44B9 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva