#3F75D2#3F75D2

#3F75D2 is a mid, vivid blue. Relative luminance 0.184; OKLCH L 57.3% C 0.154 H 260.5°. Best body text is #000000 at 4.69:1 contrast (WCAG AA passes).

Color values

HEX#3F75D2
RGBrgb(63, 117, 210)
HSLhsl(218, 62%, 54%)
HSVhsv(218, 70%, 82%)
CMYKcmyk(70%, 44.3%, 0%, 17.6%)
CIE-LABlab(50.01, 13.05, -53.25)
CIE-LCHlch(50.01, 54.82, 283.77°)
OKLaboklab(57.32% -0.0255 -0.1523)
OKLCHoklch(57.32% 0.154 260.5)
XYZxyz(20.0399, 18.4304, 63.4616)
Luminance0.1843 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3F75D2 #D29C3F
analogous
#3FBED2 #3F75D2 #523FD2
triadic
#3F75D2 #D23F75 #75D23F
tetradic
#3F75D2 #D23FBE #D29C3F #3FD252
square
#3F75D2 #D23FBE #D29C3F #3FD252
split-complementary
#3F75D2 #D2523F #BED23F
monochromatic
#1D3F7A #2858AC #3F75D2 #7199DE #A2BCE9

Accessibility & contrast

On white

4.48
#3F75D2 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

4.69
#3F75D2 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F75D2
4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3F75D2#FFFFFF#000000##000000
##3F75D21.004.484.694.69
#FFFFFF4.481.0021.0021.00
#0000004.6921.001.001.00
##0000004.6921.001.001.00

Color blindness preview

Protanopia (red-blind)
#477ED6
Deuteranopia (green-blind)
#2B71D0
Tritanopia (blue-blind)
#008B99
Achromatopsia (no color)
#777777

Design tokens & code

CSS
--color: #3f75d2;
/* rgb */ color: rgb(63, 117, 210);
/* oklch */ color: oklch(57.3% 0.154 260.5);
Tailwind
colors: {
  custom: {
    50: '#859ce0',
    500: '#3f75d2',
    950: '#000000',
  },
}
SCSS
$custom: #3f75d2;
$custom-light: #859ce0;
$custom-dark: #000000;
JSON
{
  "hex": "#3f75d2",
  "rgb": {
    "r": 63,
    "g": 117,
    "b": 210
  },
  "hsl": {
    "h": 217.959,
    "s": 62.025,
    "l": 53.529
  },
  "oklch": {
    "l": 0.5732,
    "c": 0.15446,
    "h": 260.5
  },
  "luminance": 0.18432
}

Semantic roles & 50–950 ramp

primary
#3F75D2
secondary
#D6BF97
accent
#A943E5
background
#F8F9FD
surface
#F0F2FB
border
#CBCCD4
text
#0C0E15
muted
#7D7E83

Preview Lab

Preview with #3F75D2

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

Preview Lab → · Contrast checker → · Palette generator →

#3F75D2 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva