#366EB8#366EB8

#366EB8 is a mid, vivid cyan. Relative luminance 0.154; OKLCH L 53.8% C 0.131 H 256.3°. Best body text is #FFFFFF at 5.15:1 contrast (WCAG AA passes).

Color values

HEX	#366EB8
RGB	rgb(54, 110, 184)
HSL	hsl(214, 55%, 47%)
HSV	hsv(214, 71%, 72%)
CMYK	cmyk(70.7%, 40.2%, 0%, 27.8%)
CIE-LAB	lab(46.17, 6.63, -44.47)
CIE-LCH	lch(46.17, 44.96, 278.48°)
OKLab	oklab(53.76% -0.0309 -0.1268)
OKLCH	oklch(53.76% 0.131 256.3)
XYZ	xyz(15.7458, 15.3951, 47.4798)
Luminance	0.1540 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366EB8 #B88036

analogous

#36AFB8 #366EB8 #3F36B8

triadic

#366EB8 #B8366E #6EB836

tetradic

#366EB8 #B836AF #B88036 #36B83F

square

#366EB8 #B836AF #B88036 #36B83F

split-complementary

#366EB8 #B83F36 #AFB836

monochromatic

#1A3559 #285289 #366EB8 #5C8ECF #8BAFDD

Accessibility & contrast

On white

5.15

#366EB8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.08

#366EB8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366EB8

5.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366EB8	#FFFFFF	#000000	##FFFFFF
##366EB8	1.00	5.15	4.08	5.15
#FFFFFF	5.15	1.00	21.00	1.00
#000000	4.08	21.00	1.00	21.00
##FFFFFF	5.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C74BB

Deuteranopia (green-blind)

#3768B7

Tritanopia (blue-blind)

#007F8A

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #366eb8;
/* rgb */ color: rgb(54, 110, 184);
/* oklch */ color: oklch(53.8% 0.131 256.3);

Tailwind

colors: {
  custom: {
    50: '#7c97ce',
    500: '#366eb8',
    950: '#000000',
  },
}

SCSS

$custom: #366eb8;
$custom-light: #7c97ce;
$custom-dark: #000000;

JSON

{
  "hex": "#366eb8",
  "rgb": {
    "r": 54,
    "g": 110,
    "b": 184
  },
  "hsl": {
    "h": 214.154,
    "s": 54.622,
    "l": 46.667
  },
  "oklch": {
    "l": 0.5376,
    "c": 0.13053,
    "h": 256.3
  },
  "luminance": 0.15397
}

Semantic roles & 50–950 ramp

primary

#366EB8

secondary

#C7AA82

accent

#9E4ADE

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0D13

muted

#7C7E82

Preview Lab

Preview with #366EB8

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

Preview Lab → · Contrast checker → · Palette generator →