#366DB8#366DB8

#366DB8 is a mid, vivid cyan. Relative luminance 0.152; OKLCH L 53.5% C 0.132 H 256.9°. Best body text is #FFFFFF at 5.20:1 contrast (WCAG AA passes).

Color values

HEX	#366DB8
RGB	rgb(54, 109, 184)
HSL	hsl(215, 55%, 47%)
HSV	hsv(215, 71%, 72%)
CMYK	cmyk(70.7%, 40.8%, 0%, 27.8%)
CIE-LAB	lab(45.88, 7.26, -44.93)
CIE-LCH	lch(45.88, 45.52, 279.17°)
OKLab	oklab(53.54% -0.0299 -0.1282)
OKLCH	oklch(53.54% 0.132 256.9)
XYZ	xyz(15.6385, 15.1806, 47.4441)
Luminance	0.1518 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366DB8 #B88136

analogous

#36AEB8 #366DB8 #4036B8

triadic

#366DB8 #B8366D #6DB836

tetradic

#366DB8 #B836AE #B88136 #36B840

square

#366DB8 #B836AE #B88136 #36B840

split-complementary

#366DB8 #B84036 #AEB836

monochromatic

#1A3559 #285189 #366DB8 #5C8DCF #8BAEDD

Accessibility & contrast

On white

5.20

#366DB8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.04

#366DB8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366DB8

5.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366DB8	#FFFFFF	#000000	##FFFFFF
##366DB8	1.00	5.20	4.04	5.20
#FFFFFF	5.20	1.00	21.00	1.00
#000000	4.04	21.00	1.00	21.00
##FFFFFF	5.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A73BB

Deuteranopia (green-blind)

#3567B6

Tritanopia (blue-blind)

#007E89

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #366db8;
/* rgb */ color: rgb(54, 109, 184);
/* oklch */ color: oklch(53.5% 0.132 256.9);

Tailwind

colors: {
  custom: {
    50: '#7c96ce',
    500: '#366db8',
    950: '#000000',
  },
}

SCSS

$custom: #366db8;
$custom-light: #7c96ce;
$custom-dark: #000000;

JSON

{
  "hex": "#366db8",
  "rgb": {
    "r": 54,
    "g": 109,
    "b": 184
  },
  "hsl": {
    "h": 214.615,
    "s": 54.622,
    "l": 46.667
  },
  "oklch": {
    "l": 0.53535,
    "c": 0.13165,
    "h": 256.9
  },
  "luminance": 0.15182
}

Semantic roles & 50–950 ramp

primary

#366DB8

secondary

#C7AA82

accent

#9F4ADE

background

#F8F9FC

surface

#EFF1F9

border

#CACBD2

text

#0B0D13

muted

#7C7E82

Preview Lab

Preview with #366DB8

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

Preview Lab → · Contrast checker → · Palette generator →