#366FB9#366FB9

#366FB9 is a mid, vivid cyan. Relative luminance 0.157; OKLCH L 54.0% C 0.131 H 256.0°. Best body text is #FFFFFF at 5.08:1 contrast (WCAG AA passes).

Color values

HEX	#366FB9
RGB	rgb(54, 111, 185)
HSL	hsl(214, 55%, 47%)
HSV	hsv(214, 71%, 73%)
CMYK	cmyk(70.8%, 40%, 0%, 27.5%)
CIE-LAB	lab(46.52, 6.37, -44.50)
CIE-LCH	lch(46.52, 44.95, 278.15°)
OKLab	oklab(54.05% -0.0316 -0.1269)
OKLCH	oklch(54.05% 0.131 256)
XYZ	xyz(15.9595, 15.6542, 48.0700)
Luminance	0.1566 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366FB9 #B98036

analogous

#36B1B9 #366FB9 #3E36B9

triadic

#366FB9 #B9366F #6FB936

tetradic

#366FB9 #B936B1 #B98036 #36B93E

square

#366FB9 #B936B1 #B98036 #36B93E

split-complementary

#366FB9 #B93E36 #B1B936

monochromatic

#1A365A #28538A #366FB9 #5D8FD0 #8CAFDD

Accessibility & contrast

On white

5.08

#366FB9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.13

#366FB9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366FB9

5.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366FB9	#FFFFFF	#000000	##FFFFFF
##366FB9	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)

#4D75BC

Deuteranopia (green-blind)

#3869B8

Tritanopia (blue-blind)

#00808B

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #366fb9;
/* rgb */ color: rgb(54, 111, 185);
/* oklch */ color: oklch(54.0% 0.131 256.0);

Tailwind

colors: {
  custom: {
    50: '#7d97ce',
    500: '#366fb9',
    950: '#000000',
  },
}

SCSS

$custom: #366fb9;
$custom-light: #7d97ce;
$custom-dark: #000000;

JSON

{
  "hex": "#366fb9",
  "rgb": {
    "r": 54,
    "g": 111,
    "b": 185
  },
  "hsl": {
    "h": 213.893,
    "s": 54.812,
    "l": 46.863
  },
  "oklch": {
    "l": 0.54048,
    "c": 0.13077,
    "h": 256
  },
  "luminance": 0.15656
}

Semantic roles & 50–950 ramp

primary

#366FB9

secondary

#C8AA83

accent

#9E4ADE

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0D14

muted

#7C7E82

Preview Lab

Preview with #366FB9

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

Preview Lab → · Contrast checker → · Palette generator →