#366BCC#366BCC

#366BCC is a mid, vivid blue. Relative luminance 0.157; OKLCH L 54.4% C 0.161 H 261.3°. Best body text is #FFFFFF at 5.08:1 contrast (WCAG AA passes).

Color values

HEX	#366BCC
RGB	rgb(54, 107, 204)
HSL	hsl(219, 60%, 51%)
HSV	hsv(219, 74%, 80%)
CMYK	cmyk(73.5%, 47.5%, 0%, 20%)
CIE-LAB	lab(46.52, 15.90, -55.45)
CIE-LCH	lch(46.52, 57.68, 286.00°)
OKLab	oklab(54.42% -0.0244 -0.1591)
OKLCH	oklch(54.42% 0.161 261.3)
XYZ	xyz(17.6742, 15.6573, 59.2057)
Luminance	0.1566 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366BCC #CC9736

analogous

#36B6CC #366BCC #4C36CC

triadic

#366BCC #CC366B #6BCC36

tetradic

#366BCC #CC36B6 #CC9736 #36CC4C

square

#366BCC #CC36B6 #CC9736 #36CC4C

split-complementary

#366BCC #CC4C36 #B6CC36

monochromatic

#1B386C #28519D #366BCC #678FD8 #98B3E5

Accessibility & contrast

On white

5.08

#366BCC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.13

#366BCC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366BCC

5.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366BCC	#FFFFFF	#000000	##FFFFFF
##366BCC	1.00	5.08	4.13	5.08
#FFFFFF	5.08	1.00	21.00	1.00
#000000	4.13	21.00	1.00	21.00
##FFFFFF	5.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3676D0

Deuteranopia (green-blind)

#0868CA

Tritanopia (blue-blind)

#008292

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #366bcc;
/* rgb */ color: rgb(54, 107, 204);
/* oklch */ color: oklch(54.4% 0.161 261.3);

Tailwind

colors: {
  custom: {
    50: '#8194dc',
    500: '#366bcc',
    950: '#000000',
  },
}

SCSS

$custom: #366bcc;
$custom-light: #8194dc;
$custom-dark: #000000;

JSON

{
  "hex": "#366bcc",
  "rgb": {
    "r": 54,
    "g": 107,
    "b": 204
  },
  "hsl": {
    "h": 218.8,
    "s": 59.524,
    "l": 50.588
  },
  "oklch": {
    "l": 0.54419,
    "c": 0.161,
    "h": 261.3
  },
  "luminance": 0.15659
}

Semantic roles & 50–950 ramp

primary

#366BCC

secondary

#D0B98E

accent

#AB45E3

background

#F8F9FD

surface

#F0F1FB

border

#CBCBD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #366BCC

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

Preview Lab → · Contrast checker → · Palette generator →