#3866D5#3866D5

#3866D5 is a mid, vivid blue. Relative luminance 0.151; OKLCH L 54.1% C 0.178 H 264.3°. Best body text is #FFFFFF at 5.21:1 contrast (WCAG AA passes).

Color values

HEX#3866D5
RGBrgb(56, 102, 213)
HSLhsl(222, 65%, 53%)
HSVhsv(222, 74%, 84%)
CMYKcmyk(73.7%, 52.1%, 0%, 16.5%)
CIE-LABlab(45.83, 22.66, -61.70)
CIE-LCHlch(45.83, 65.73, 290.17°)
OKLaboklab(54.11% -0.0178 -0.1776)
OKLCHoklch(54.11% 0.178 264.3)
XYZxyz(18.3882, 15.1456, 64.8922)
Luminance0.1515 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3866D5 #D5A738
analogous
#38B5D5 #3866D5 #5838D5
triadic
#3866D5 #D53866 #66D538
tetradic
#3866D5 #D538B5 #D5A738 #38D558
square
#3866D5 #D538B5 #D5A738 #38D558
split-complementary
#3866D5 #D55838 #B5D538
monochromatic
#1A3679 #244CAC #3866D5 #6B8DE0 #9DB4EA

Accessibility & contrast

On white

5.21
#3866D5 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

4.03
#3866D5 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3866D5
5.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3866D5#FFFFFF#000000##FFFFFF
##3866D51.005.214.035.21
#FFFFFF5.211.0021.001.00
#0000004.0321.001.0021.00
##FFFFFF5.211.0021.001.00

Color blindness preview

Protanopia (red-blind)
#1974D9
Deuteranopia (green-blind)
#0066D3
Tritanopia (blue-blind)
#008194
Achromatopsia (no color)
#6D6D6D

Design tokens & code

CSS
--color: #3866d5;
/* rgb */ color: rgb(56, 102, 213);
/* oklch */ color: oklch(54.1% 0.178 264.3);
Tailwind
colors: {
  custom: {
    50: '#8391e3',
    500: '#3866d5',
    950: '#000000',
  },
}
SCSS
$custom: #3866d5;
$custom-light: #8391e3;
$custom-dark: #000000;
JSON
{
  "hex": "#3866d5",
  "rgb": {
    "r": 56,
    "g": 102,
    "b": 213
  },
  "hsl": {
    "h": 222.42,
    "s": 65.145,
    "l": 52.745
  },
  "oklch": {
    "l": 0.54106,
    "c": 0.17848,
    "h": 264.3
  },
  "luminance": 0.15148
}

Semantic roles & 50–950 ramp

primary
#3866D5
secondary
#D6C292
accent
#B740E8
background
#F8F8FE
surface
#F0F0FC
border
#CBCBD5
text
#0C0C15
muted
#7D7D84

Preview Lab

Preview with #3866D5

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

Preview Lab → · Contrast checker → · Palette generator →

#3866D5 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva