#3964C9#3964C9

#3964C9 is a mid, vivid blue. Relative luminance 0.142; OKLCH L 52.9% C 0.164 H 264.2°. Best body text is #FFFFFF at 5.47:1 contrast (WCAG AA passes).

Color values

HEX#3964C9
RGBrgb(57, 100, 201)
HSLhsl(222, 57%, 51%)
HSVhsv(222, 72%, 79%)
CMYKcmyk(71.6%, 50.2%, 0%, 21.2%)
CIE-LABlab(44.52, 19.66, -56.95)
CIE-LCHlch(44.52, 60.24, 289.05°)
OKLaboklab(52.86% -0.0167 -0.1636)
OKLCHoklch(52.86% 0.164 264.2)
XYZxyz(16.7834, 14.1995, 57.1033)
Luminance0.1420 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3964C9 #C99E39
analogous
#39ACC9 #3964C9 #5639C9
triadic
#3964C9 #C93964 #64C939
tetradic
#3964C9 #C939AC #C99E39 #39C956
square
#3964C9 #C939AC #C99E39 #39C956
split-complementary
#3964C9 #C95639 #ACC939
monochromatic
#1D346B #2A4C9B #3964C9 #698AD6 #99AFE3

Accessibility & contrast

On white

5.47
#3964C9 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.84
#3964C9 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3964C9
5.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3964C9#FFFFFF#000000##FFFFFF
##3964C91.005.473.845.47
#FFFFFF5.471.0021.001.00
#0000003.8421.001.0021.00
##FFFFFF5.471.0021.001.00

Color blindness preview

Protanopia (red-blind)
#2770CD
Deuteranopia (green-blind)
#0063C7
Tritanopia (blue-blind)
#007C8D
Achromatopsia (no color)
#696969

Design tokens & code

CSS
--color: #3964c9;
/* rgb */ color: rgb(57, 100, 201);
/* oklch */ color: oklch(52.9% 0.164 264.2);
Tailwind
colors: {
  custom: {
    50: '#818fda',
    500: '#3964c9',
    950: '#000000',
  },
}
SCSS
$custom: #3964c9;
$custom-light: #818fda;
$custom-dark: #000000;
JSON
{
  "hex": "#3964c9",
  "rgb": {
    "r": 57,
    "g": 100,
    "b": 201
  },
  "hsl": {
    "h": 222.083,
    "s": 57.143,
    "l": 50.588
  },
  "oklch": {
    "l": 0.52857,
    "c": 0.16446,
    "h": 264.2
  },
  "luminance": 0.14201
}

Semantic roles & 50–950 ramp

primary
#3964C9
secondary
#CFBC8F
accent
#B347E0
background
#F8F8FD
surface
#F0F0FB
border
#CBCBD4
text
#0C0C15
muted
#7D7D83

Preview Lab

Preview with #3964C9

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

Preview Lab → · Contrast checker → · Palette generator →

#3964C9 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva