#3F65BA#3F65BA

#3F65BA is a mid, vivid blue. Relative luminance 0.139; OKLCH L 52.3% C 0.141 H 264.0°. Best body text is #FFFFFF at 5.55:1 contrast (WCAG AA passes).

Color values

HEX#3F65BA
RGBrgb(63, 101, 186)
HSLhsl(221, 49%, 49%)
HSVhsv(221, 66%, 73%)
CMYKcmyk(66.1%, 45.7%, 0%, 27.1%)
CIE-LABlab(44.10, 14.49, -48.92)
CIE-LCHlch(44.10, 51.02, 286.50°)
OKLaboklab(52.3% -0.0146 -0.1399)
OKLCHoklch(52.3% 0.141 264)
XYZxyz(15.5634, 13.9078, 48.3091)
Luminance0.1391 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3F65BA #BA943F
analogous
#3FA3BA #3F65BA #563FBA
triadic
#3F65BA #BA3F65 #65BA3F
tetradic
#3F65BA #BA3FA3 #BA943F #3FBA56
square
#3F65BA #BA3FA3 #BA943F #3FBA56
split-complementary
#3F65BA #BA563F #A3BA3F
monochromatic
#20335F #304C8C #3F65BA #6A88CC #97ADDC

Accessibility & contrast

On white

5.55
#3F65BA on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.78
#3F65BA on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F65BA
5.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3F65BA#FFFFFF#000000##FFFFFF
##3F65BA1.005.553.785.55
#FFFFFF5.551.0021.001.00
#0000003.7821.001.0021.00
##FFFFFF5.551.0021.001.00

Color blindness preview

Protanopia (red-blind)
#3B6EBD
Deuteranopia (green-blind)
#2563B8
Tritanopia (blue-blind)
#007986
Achromatopsia (no color)
#686868

Design tokens & code

CSS
--color: #3f65ba;
/* rgb */ color: rgb(63, 101, 186);
/* oklch */ color: oklch(52.3% 0.141 264.0);
Tailwind
colors: {
  custom: {
    50: '#8190cf',
    500: '#3f65ba',
    950: '#000000',
  },
}
SCSS
$custom: #3f65ba;
$custom-light: #8190cf;
$custom-dark: #000000;
JSON
{
  "hex": "#3f65ba",
  "rgb": {
    "r": 63,
    "g": 101,
    "b": 186
  },
  "hsl": {
    "h": 221.463,
    "s": 49.398,
    "l": 48.824
  },
  "oklch": {
    "l": 0.52303,
    "c": 0.14064,
    "h": 264
  },
  "luminance": 0.13909
}

Semantic roles & 50–950 ramp

primary
#3F65BA
secondary
#C8B68D
accent
#AE4FD9
background
#F8F8FC
surface
#F0F0F9
border
#CBCBD2
text
#0B0C14
muted
#7C7D82

Preview Lab

Preview with #3F65BA

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

Preview Lab → · Contrast checker → · Palette generator →

#3F65BA Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva