#366DBC#366DBC

#366DBC is a mid, vivid blue. Relative luminance 0.154; OKLCH L 53.8% C 0.137 H 257.7°. Best body text is #FFFFFF at 5.16:1 contrast (WCAG AA passes).

Color values

HEX#366DBC
RGBrgb(54, 109, 188)
HSLhsl(215, 55%, 47%)
HSVhsv(215, 71%, 74%)
CMYKcmyk(71.3%, 42%, 0%, 26.3%)
CIE-LABlab(46.11, 8.72, -46.89)
CIE-LCHlch(46.11, 47.69, 280.54°)
OKLaboklab(53.79% -0.0291 -0.1339)
OKLCHoklch(53.79% 0.137 257.7)
XYZxyz(16.0638, 15.3507, 49.6836)
Luminance0.1535 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#366DBC #BC8536
analogous
#36B0BC #366DBC #4236BC
triadic
#366DBC #BC366D #6DBC36
tetradic
#366DBC #BC36B0 #BC8536 #36BC42
square
#366DBC #BC36B0 #BC8536 #36BC42
split-complementary
#366DBC #BC4236 #B0BC36
monochromatic
#1B365D #28518C #366DBC #5E8DD1 #8EAFDF

Accessibility & contrast

On white

5.16
#366DBC on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

4.07
#366DBC on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366DBC
5.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##366DBC#FFFFFF#000000##FFFFFF
##366DBC1.005.164.075.16
#FFFFFF5.161.0021.001.00
#0000004.0721.001.0021.00
##FFFFFF5.161.0021.001.00

Color blindness preview

Protanopia (red-blind)
#4774BF
Deuteranopia (green-blind)
#3167BA
Tritanopia (blue-blind)
#007F8B
Achromatopsia (no color)
#6D6D6D

Design tokens & code

CSS
--color: #366dbc;
/* rgb */ color: rgb(54, 109, 188);
/* oklch */ color: oklch(53.8% 0.137 257.7);
Tailwind
colors: {
  custom: {
    50: '#7d96d0',
    500: '#366dbc',
    950: '#000000',
  },
}
SCSS
$custom: #366dbc;
$custom-light: #7d96d0;
$custom-dark: #000000;
JSON
{
  "hex": "#366dbc",
  "rgb": {
    "r": 54,
    "g": 109,
    "b": 188
  },
  "hsl": {
    "h": 215.373,
    "s": 55.372,
    "l": 47.451
  },
  "oklch": {
    "l": 0.53788,
    "c": 0.13705,
    "h": 257.7
  },
  "luminance": 0.15352
}

Semantic roles & 50–950 ramp

primary
#366DBC
secondary
#C9AD85
accent
#A149DF
background
#F8F9FC
surface
#EFF1F9
border
#CACBD2
text
#0B0D14
muted
#7C7E82

Preview Lab

Preview with #366DBC

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

Preview Lab → · Contrast checker → · Palette generator →

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