#366CC3#366CC3

#366CC3 is a mid, vivid blue. Relative luminance 0.154; OKLCH L 54.0% C 0.148 H 259.5°. Best body text is #FFFFFF at 5.13:1 contrast (WCAG AA passes).

Color values

HEX#366CC3
RGBrgb(54, 108, 195)
HSLhsl(217, 57%, 49%)
HSVhsv(217, 72%, 76%)
CMYKcmyk(72.3%, 44.6%, 0%, 23.5%)
CIE-LABlab(46.24, 11.94, -50.72)
CIE-LCHlch(46.24, 52.11, 283.24°)
OKLaboklab(54.02% -0.0268 -0.1452)
OKLCHoklch(54.02% 0.148 259.5)
XYZxyz(16.7306, 15.4477, 53.7191)
Luminance0.1545 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#366CC3 #C38D36
analogous
#36B3C3 #366CC3 #4636C3
triadic
#366CC3 #C3366C #6CC336
tetradic
#366CC3 #C336B3 #C38D36 #36C346
square
#366CC3 #C336B3 #C38D36 #36C346
split-complementary
#366CC3 #C34636 #B3C336
monochromatic
#1B3763 #295193 #366CC3 #638ED4 #92B1E1

Accessibility & contrast

On white

5.13
#366CC3 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

4.09
#366CC3 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366CC3
5.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##366CC3#FFFFFF#000000##FFFFFF
##366CC31.005.134.095.13
#FFFFFF5.131.0021.001.00
#0000004.0921.001.0021.00
##FFFFFF5.131.0021.001.00

Color blindness preview

Protanopia (red-blind)
#4075C6
Deuteranopia (green-blind)
#2568C1
Tritanopia (blue-blind)
#00808E
Achromatopsia (no color)
#6E6E6E

Design tokens & code

CSS
--color: #366cc3;
/* rgb */ color: rgb(54, 108, 195);
/* oklch */ color: oklch(54.0% 0.148 259.5);
Tailwind
colors: {
  custom: {
    50: '#7f95d6',
    500: '#366cc3',
    950: '#000000',
  },
}
SCSS
$custom: #366cc3;
$custom-light: #7f95d6;
$custom-dark: #000000;
JSON
{
  "hex": "#366cc3",
  "rgb": {
    "r": 54,
    "g": 108,
    "b": 195
  },
  "hsl": {
    "h": 217.021,
    "s": 56.627,
    "l": 48.824
  },
  "oklch": {
    "l": 0.54023,
    "c": 0.14767,
    "h": 259.5
  },
  "luminance": 0.1545
}

Semantic roles & 50–950 ramp

primary
#366CC3
secondary
#CCB289
accent
#A648E0
background
#F8F9FD
surface
#EFF1FA
border
#CACBD3
text
#0B0D14
muted
#7C7E83

Preview Lab

Preview with #366CC3

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

Preview Lab → · Contrast checker → · Palette generator →

#366CC3 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva