#366DB8#366DB8

#366DB8 is a mid, vivid cyan. Relative luminance 0.152; OKLCH L 53.5% C 0.132 H 256.9°. Best body text is #FFFFFF at 5.20:1 contrast (WCAG AA passes).

Color values

HEX#366DB8
RGBrgb(54, 109, 184)
HSLhsl(215, 55%, 47%)
HSVhsv(215, 71%, 72%)
CMYKcmyk(70.7%, 40.8%, 0%, 27.8%)
CIE-LABlab(45.88, 7.26, -44.93)
CIE-LCHlch(45.88, 45.52, 279.17°)
OKLaboklab(53.54% -0.0299 -0.1282)
OKLCHoklch(53.54% 0.132 256.9)
XYZxyz(15.6385, 15.1806, 47.4441)
Luminance0.1518 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#366DB8 #B88136
analogous
#36AEB8 #366DB8 #4036B8
triadic
#366DB8 #B8366D #6DB836
tetradic
#366DB8 #B836AE #B88136 #36B840
square
#366DB8 #B836AE #B88136 #36B840
split-complementary
#366DB8 #B84036 #AEB836
monochromatic
#1A3559 #285189 #366DB8 #5C8DCF #8BAEDD

Accessibility & contrast

On white

5.20
#366DB8 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

4.04
#366DB8 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366DB8
5.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##366DB8#FFFFFF#000000##FFFFFF
##366DB81.005.204.045.20
#FFFFFF5.201.0021.001.00
#0000004.0421.001.0021.00
##FFFFFF5.201.0021.001.00

Color blindness preview

Protanopia (red-blind)
#4A73BB
Deuteranopia (green-blind)
#3567B6
Tritanopia (blue-blind)
#007E89
Achromatopsia (no color)
#6D6D6D

Design tokens & code

CSS
--color: #366db8;
/* rgb */ color: rgb(54, 109, 184);
/* oklch */ color: oklch(53.5% 0.132 256.9);
Tailwind
colors: {
  custom: {
    50: '#7c96ce',
    500: '#366db8',
    950: '#000000',
  },
}
SCSS
$custom: #366db8;
$custom-light: #7c96ce;
$custom-dark: #000000;
JSON
{
  "hex": "#366db8",
  "rgb": {
    "r": 54,
    "g": 109,
    "b": 184
  },
  "hsl": {
    "h": 214.615,
    "s": 54.622,
    "l": 46.667
  },
  "oklch": {
    "l": 0.53535,
    "c": 0.13165,
    "h": 256.9
  },
  "luminance": 0.15182
}

Semantic roles & 50–950 ramp

primary
#366DB8
secondary
#C7AA82
accent
#9F4ADE
background
#F8F9FC
surface
#EFF1F9
border
#CACBD2
text
#0B0D13
muted
#7C7E82

Preview Lab

Preview with #366DB8

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

Preview Lab → · Contrast checker → · Palette generator →

#366DB8 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva