#366FA9#366FA9

#366FA9 is a mid, moderate cyan. Relative luminance 0.150; OKLCH L 53.1% C 0.110 H 251.0°. Best body text is #FFFFFF at 5.25:1 contrast (WCAG AA passes).

Color values

HEX	#366FA9
RGB	rgb(54, 111, 169)
HSL	hsl(210, 52%, 44%)
HSV	hsv(210, 68%, 66%)
CMYK	cmyk(68%, 34.3%, 0%, 33.7%)
CIE-LAB	lab(45.66, 0.57, -36.54)
CIE-LCH	lch(45.66, 36.54, 270.89°)
OKLab	oklab(53.1% -0.0357 -0.1036)
OKLCH	oklch(53.1% 0.11 251)
XYZ	xyz(14.3645, 15.0162, 39.6698)
Luminance	0.1502 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366FA9 #A97036

analogous

#36A8A9 #366FA9 #3636A9

triadic

#366FA9 #A9366F #6FA936

tetradic

#366FA9 #A936A8 #A97036 #36A936

square

#366FA9 #A936A8 #A97036 #36A936

split-complementary

#366FA9 #A93636 #A8A936

monochromatic

#18324C #27517B #366FA9 #548EC8 #82ACD7

Accessibility & contrast

On white

5.25

#366FA9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.00

#366FA9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366FA9

5.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366FA9	#FFFFFF	#000000	##FFFFFF
##366FA9	1.00	5.25	4.00	5.25
#FFFFFF	5.25	1.00	21.00	1.00
#000000	4.00	21.00	1.00	21.00
##FFFFFF	5.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5572AB

Deuteranopia (green-blind)

#4567A8

Tritanopia (blue-blind)

#007D84

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #366fa9;
/* rgb */ color: rgb(54, 111, 169);
/* oklch */ color: oklch(53.1% 0.110 251.0);

Tailwind

colors: {
  custom: {
    50: '#7a98c3',
    500: '#366fa9',
    950: '#000000',
  },
}

SCSS

$custom: #366fa9;
$custom-light: #7a98c3;
$custom-dark: #000000;

JSON

{
  "hex": "#366fa9",
  "rgb": {
    "r": 54,
    "g": 111,
    "b": 169
  },
  "hsl": {
    "h": 210.261,
    "s": 51.57,
    "l": 43.725
  },
  "oklch": {
    "l": 0.53095,
    "c": 0.10957,
    "h": 251
  },
  "luminance": 0.15018
}

Semantic roles & 50–950 ramp

primary

#366FA9

secondary

#C19E7A

accent

#954DDB

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0D12

muted

#7C7E81

Preview Lab

Preview with #366FA9

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

Preview Lab → · Contrast checker → · Palette generator →