#366FB8#366FB8

#366FB8 is a mid, vivid cyan. Relative luminance 0.156; OKLCH L 54.0% C 0.129 H 255.8°. Best body text is #FFFFFF at 5.09:1 contrast (WCAG AA passes).

Color values

HEX	#366FB8
RGB	rgb(54, 111, 184)
HSL	hsl(214, 55%, 47%)
HSV	hsv(214, 71%, 72%)
CMYK	cmyk(70.7%, 39.7%, 0%, 27.8%)
CIE-LAB	lab(46.46, 6.01, -44.01)
CIE-LCH	lch(46.46, 44.42, 277.77°)
OKLab	oklab(53.99% -0.0319 -0.1254)
OKLCH	oklch(53.99% 0.129 255.8)
XYZ	xyz(15.8543, 15.6122, 47.5160)
Luminance	0.1561 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366FB8 #B87F36

analogous

#36B0B8 #366FB8 #3E36B8

triadic

#366FB8 #B8366F #6FB836

tetradic

#366FB8 #B836B0 #B87F36 #36B83E

square

#366FB8 #B836B0 #B87F36 #36B83E

split-complementary

#366FB8 #B83E36 #B0B836

monochromatic

#1A3659 #285289 #366FB8 #5C8FCF #8BAFDD

Accessibility & contrast

On white

5.09

#366FB8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.12

#366FB8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366FB8

5.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366FB8	#FFFFFF	#000000	##FFFFFF
##366FB8	1.00	5.09	4.12	5.09
#FFFFFF	5.09	1.00	21.00	1.00
#000000	4.12	21.00	1.00	21.00
##FFFFFF	5.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D75BB

Deuteranopia (green-blind)

#3969B7

Tritanopia (blue-blind)

#00808A

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #366fb8;
/* rgb */ color: rgb(54, 111, 184);
/* oklch */ color: oklch(54.0% 0.129 255.8);

Tailwind

colors: {
  custom: {
    50: '#7c97ce',
    500: '#366fb8',
    950: '#000000',
  },
}

SCSS

$custom: #366fb8;
$custom-light: #7c97ce;
$custom-dark: #000000;

JSON

{
  "hex": "#366fb8",
  "rgb": {
    "r": 54,
    "g": 111,
    "b": 184
  },
  "hsl": {
    "h": 213.692,
    "s": 54.622,
    "l": 46.667
  },
  "oklch": {
    "l": 0.53986,
    "c": 0.12943,
    "h": 255.8
  },
  "luminance": 0.15614
}

Semantic roles & 50–950 ramp

primary

#366FB8

secondary

#C7A982

accent

#9D4ADE

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0D13

muted

#7C7E82

Preview Lab

Preview with #366FB8

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

Preview Lab → · Contrast checker → · Palette generator →