#366FA5#366FA5

#366FA5 is a mid, moderate cyan. Relative luminance 0.149; OKLCH L 52.9% C 0.104 H 249.3°. Best body text is #FFFFFF at 5.28:1 contrast (WCAG AA passes).

Color values

HEX	#366FA5
RGB	rgb(54, 111, 165)
HSL	hsl(209, 51%, 43%)
HSV	hsv(209, 67%, 65%)
CMYK	cmyk(67.3%, 32.7%, 0%, 35.3%)
CIE-LAB	lab(45.45, -0.86, -34.51)
CIE-LCH	lch(45.45, 34.52, 268.57°)
OKLab	oklab(52.87% -0.0369 -0.0977)
OKLCH	oklch(52.87% 0.104 249.3)
XYZ	xyz(13.9948, 14.8683, 37.7224)
Luminance	0.1487 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366FA5 #A56C36

analogous

#36A5A3 #366FA5 #3638A5

triadic

#366FA5 #A5366F #6FA536

tetradic

#366FA5 #A336A5 #A56C36 #38A536

square

#366FA5 #A336A5 #A56C36 #38A536

split-complementary

#366FA5 #A53638 #A5A336

monochromatic

#183149 #275077 #366FA5 #528EC6 #80ACD5

Accessibility & contrast

On white

5.28

#366FA5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.97

#366FA5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366FA5

5.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366FA5	#FFFFFF	#000000	##FFFFFF
##366FA5	1.00	5.28	3.97	5.28
#FFFFFF	5.28	1.00	21.00	1.00
#000000	3.97	21.00	1.00	21.00
##FFFFFF	5.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5771A7

Deuteranopia (green-blind)

#4867A4

Tritanopia (blue-blind)

#007C82

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #366fa5;
/* rgb */ color: rgb(54, 111, 165);
/* oklch */ color: oklch(52.9% 0.104 249.3);

Tailwind

colors: {
  custom: {
    50: '#7998c0',
    500: '#366fa5',
    950: '#000000',
  },
}

SCSS

$custom: #366fa5;
$custom-light: #7998c0;
$custom-dark: #000000;

JSON

{
  "hex": "#366fa5",
  "rgb": {
    "r": 54,
    "g": 111,
    "b": 165
  },
  "hsl": {
    "h": 209.189,
    "s": 50.685,
    "l": 42.941
  },
  "oklch": {
    "l": 0.52869,
    "c": 0.10441,
    "h": 249.3
  },
  "luminance": 0.1487
}

Semantic roles & 50–950 ramp

primary

#366FA5

secondary

#BF9A78

accent

#924EDA

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#0A0D12

muted

#7C7E81

Preview Lab

Preview with #366FA5

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

Preview Lab → · Contrast checker → · Palette generator →