#366DBB#366DBB

#366DBB is a mid, vivid blue. Relative luminance 0.153; OKLCH L 53.7% C 0.136 H 257.5°. Best body text is #FFFFFF at 5.17:1 contrast (WCAG AA passes).

Color values

HEX#366DBB
RGBrgb(54, 109, 187)
HSLhsl(215, 55%, 47%)
HSVhsv(215, 71%, 73%)
CMYKcmyk(71.1%, 41.7%, 0%, 26.7%)
CIE-LABlab(46.05, 8.36, -46.40)
CIE-LCHlch(46.05, 47.15, 280.21°)
OKLaboklab(53.72% -0.0293 -0.1325)
OKLCHoklch(53.72% 0.136 257.5)
XYZxyz(15.9563, 15.3077, 49.1178)
Luminance0.1531 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#366DBB #BB8436
analogous
#36B0BB #366DBB #4136BB
triadic
#366DBB #BB366D #6DBB36
tetradic
#366DBB #BB36B0 #BB8436 #36BB41
square
#366DBB #BB36B0 #BB8436 #36BB41
split-complementary
#366DBB #BB4136 #B0BB36
monochromatic
#1B365C #28518C #366DBB #5E8DD0 #8DAFDE

Accessibility & contrast

On white

5.17
#366DBB on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

4.06
#366DBB on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366DBB
5.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##366DBB#FFFFFF#000000##FFFFFF
##366DBB1.005.174.065.17
#FFFFFF5.171.0021.001.00
#0000004.0621.001.0021.00
##FFFFFF5.171.0021.001.00

Color blindness preview

Protanopia (red-blind)
#4874BE
Deuteranopia (green-blind)
#3267B9
Tritanopia (blue-blind)
#007F8B
Achromatopsia (no color)
#6D6D6D

Design tokens & code

CSS
--color: #366dbb;
/* rgb */ color: rgb(54, 109, 187);
/* oklch */ color: oklch(53.7% 0.136 257.5);
Tailwind
colors: {
  custom: {
    50: '#7d96d0',
    500: '#366dbb',
    950: '#000000',
  },
}
SCSS
$custom: #366dbb;
$custom-light: #7d96d0;
$custom-dark: #000000;
JSON
{
  "hex": "#366dbb",
  "rgb": {
    "r": 54,
    "g": 109,
    "b": 187
  },
  "hsl": {
    "h": 215.188,
    "s": 55.187,
    "l": 47.255
  },
  "oklch": {
    "l": 0.53724,
    "c": 0.1357,
    "h": 257.5
  },
  "luminance": 0.15309
}

Semantic roles & 50–950 ramp

primary
#366DBB
secondary
#C9AC84
accent
#A149DF
background
#F8F9FC
surface
#EFF1F9
border
#CACBD2
text
#0B0D14
muted
#7C7E82

Preview Lab

Preview with #366DBB

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

Preview Lab → · Contrast checker → · Palette generator →

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