#3966E9#3966E9

#3966E9 is a mid, highly saturated blue. Relative luminance 0.163; OKLCH L 55.7% C 0.204 H 265.6°. Best body text is #FFFFFF at 4.94:1 contrast (WCAG AA passes).

Color values

HEX#3966E9
RGBrgb(57, 102, 233)
HSLhsl(225, 80%, 57%)
HSVhsv(225, 76%, 91%)
CMYKcmyk(75.5%, 56.2%, 0%, 8.6%)
CIE-LABlab(47.31, 30.08, -70.64)
CIE-LCHlch(47.31, 76.78, 293.07°)
OKLaboklab(55.68% -0.0156 -0.2039)
OKLCHoklch(55.68% 0.204 265.6)
XYZxyz(21.1415, 16.2534, 79.0980)
Luminance0.1626 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3966E9 #E9BC39
analogous
#39BEE9 #3966E9 #6439E9
triadic
#3966E9 #E93966 #66E939
tetradic
#3966E9 #E939BE #E9BC39 #39E964
square
#3966E9 #E939BE #E9BC39 #39E964
split-complementary
#3966E9 #E96439 #BEE939
monochromatic
#113397 #1746CE #3966E9 #7091EF #A7BBF5

Accessibility & contrast

On white

4.94
#3966E9 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

4.25
#3966E9 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3966E9
4.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3966E9#FFFFFF#000000##FFFFFF
##3966E91.004.944.254.94
#FFFFFF4.941.0021.001.00
#0000004.2521.001.0021.00
##FFFFFF4.941.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0079ED
Deuteranopia (green-blind)
#0068E6
Tritanopia (blue-blind)
#00879E
Achromatopsia (no color)
#707070

Design tokens & code

CSS
--color: #3966e9;
/* rgb */ color: rgb(57, 102, 233);
/* oklch */ color: oklch(55.7% 0.204 265.6);
Tailwind
colors: {
  custom: {
    50: '#8891f1',
    500: '#3966e9',
    950: '#000000',
  },
}
SCSS
$custom: #3966e9;
$custom-light: #8891f1;
$custom-dark: #000000;
JSON
{
  "hex": "#3966e9",
  "rgb": {
    "r": 57,
    "g": 102,
    "b": 233
  },
  "hsl": {
    "h": 224.659,
    "s": 80,
    "l": 56.863
  },
  "oklch": {
    "l": 0.55681,
    "c": 0.20446,
    "h": 265.6
  },
  "luminance": 0.16256
}

Semantic roles & 50–950 ramp

primary
#3966E9
secondary
#E3D09B
accent
#C431F6
background
#F9F8FE
surface
#F1F0FD
border
#CBCBD5
text
#0D0C17
muted
#7E7D85

Preview Lab

Preview with #3966E9

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

Preview Lab → · Contrast checker → · Palette generator →

#3966E9 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva