#366BCD#366BCD

#366BCD is a mid, vivid blue. Relative luminance 0.157; OKLCH L 54.5% C 0.162 H 261.4°. Best body text is #FFFFFF at 5.07:1 contrast (WCAG AA passes).

Color values

HEX	#366BCD
RGB	rgb(54, 107, 205)
HSL	hsl(219, 60%, 51%)
HSV	hsv(219, 74%, 80%)
CMYK	cmyk(73.7%, 47.8%, 0%, 19.6%)
CIE-LAB	lab(46.59, 16.27, -55.92)
CIE-LCH	lch(46.59, 58.23, 286.22°)
OKLab	oklab(54.49% -0.0243 -0.1605)
OKLCH	oklch(54.49% 0.162 261.4)
XYZ	xyz(17.7945, 15.7055, 59.8394)
Luminance	0.1571 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366BCD #CD9836

analogous

#36B7CD #366BCD #4C36CD

triadic

#366BCD #CD366B #6BCD36

tetradic

#366BCD #CD36B7 #CD9836 #36CD4C

square

#366BCD #CD36B7 #CD9836 #36CD4C

split-complementary

#366BCD #CD4C36 #B7CD36

monochromatic

#1B386D #27519E #366BCD #678FD9 #98B3E5

Accessibility & contrast

On white

5.07

#366BCD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.14

#366BCD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366BCD

5.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366BCD	#FFFFFF	#000000	##FFFFFF
##366BCD	1.00	5.07	4.14	5.07
#FFFFFF	5.07	1.00	21.00	1.00
#000000	4.14	21.00	1.00	21.00
##FFFFFF	5.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3576D1

Deuteranopia (green-blind)

#0368CB

Tritanopia (blue-blind)

#008292

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #366bcd;
/* rgb */ color: rgb(54, 107, 205);
/* oklch */ color: oklch(54.5% 0.162 261.4);

Tailwind

colors: {
  custom: {
    50: '#8194dd',
    500: '#366bcd',
    950: '#000000',
  },
}

SCSS

$custom: #366bcd;
$custom-light: #8194dd;
$custom-dark: #000000;

JSON

{
  "hex": "#366bcd",
  "rgb": {
    "r": 54,
    "g": 107,
    "b": 205
  },
  "hsl": {
    "h": 218.94,
    "s": 60.159,
    "l": 50.784
  },
  "oklch": {
    "l": 0.54489,
    "c": 0.16234,
    "h": 261.4
  },
  "luminance": 0.15707
}

Semantic roles & 50–950 ramp

primary

#366BCD

secondary

#D1B98E

accent

#AC44E3

background

#F8F9FD

surface

#F0F1FB

border

#CBCBD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #366BCD

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

Preview Lab → · Contrast checker → · Palette generator →