#366FBC#366FBC

#366FBC is a mid, vivid cyan. Relative luminance 0.158; OKLCH L 54.2% C 0.135 H 256.7°. Best body text is #FFFFFF at 5.05:1 contrast (WCAG AA passes).

Color values

HEX	#366FBC
RGB	rgb(54, 111, 188)
HSL	hsl(214, 55%, 47%)
HSV	hsv(214, 71%, 74%)
CMYK	cmyk(71.3%, 41%, 0%, 26.3%)
CIE-LAB	lab(46.69, 7.47, -45.97)
CIE-LCH	lch(46.69, 46.57, 279.23°)
OKLab	oklab(54.24% -0.031 -0.1312)
OKLCH	oklch(54.24% 0.135 256.7)
XYZ	xyz(16.2795, 15.7822, 49.7555)
Luminance	0.1578 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366FBC #BC8336

analogous

#36B2BC #366FBC #4036BC

triadic

#366FBC #BC366F #6FBC36

tetradic

#366FBC #BC36B2 #BC8336 #36BC40

square

#366FBC #BC36B2 #BC8336 #36BC40

split-complementary

#366FBC #BC4036 #B2BC36

monochromatic

#1B375D #28538C #366FBC #5E8FD1 #8EB0DF

Accessibility & contrast

On white

5.05

#366FBC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.16

#366FBC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366FBC

5.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366FBC	#FFFFFF	#000000	##FFFFFF
##366FBC	1.00	5.05	4.16	5.05
#FFFFFF	5.05	1.00	21.00	1.00
#000000	4.16	21.00	1.00	21.00
##FFFFFF	5.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B75BF

Deuteranopia (green-blind)

#3569BA

Tritanopia (blue-blind)

#00818C

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #366fbc;
/* rgb */ color: rgb(54, 111, 188);
/* oklch */ color: oklch(54.2% 0.135 256.7);

Tailwind

colors: {
  custom: {
    50: '#7d97d0',
    500: '#366fbc',
    950: '#000000',
  },
}

SCSS

$custom: #366fbc;
$custom-light: #7d97d0;
$custom-dark: #000000;

JSON

{
  "hex": "#366fbc",
  "rgb": {
    "r": 54,
    "g": 111,
    "b": 188
  },
  "hsl": {
    "h": 214.478,
    "s": 55.372,
    "l": 47.451
  },
  "oklch": {
    "l": 0.54235,
    "c": 0.13479,
    "h": 256.7
  },
  "luminance": 0.15784
}

Semantic roles & 50–950 ramp

primary

#366FBC

secondary

#C9AC85

accent

#9F49DF

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0D14

muted

#7C7E82

Preview Lab

Preview with #366FBC

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

Preview Lab → · Contrast checker → · Palette generator →