#366DB9#366DB9

#366DB9 is a mid, vivid cyan. Relative luminance 0.152; OKLCH L 53.6% C 0.133 H 257.1°. Best body text is #FFFFFF at 5.19:1 contrast (WCAG AA passes).

Color values

HEX	#366DB9
RGB	rgb(54, 109, 185)
HSL	hsl(215, 55%, 47%)
HSV	hsv(215, 71%, 73%)
CMYK	cmyk(70.8%, 41.1%, 0%, 27.5%)
CIE-LAB	lab(45.94, 7.62, -45.42)
CIE-LCH	lch(45.94, 46.06, 279.53°)
OKLab	oklab(53.6% -0.0297 -0.1296)
OKLCH	oklch(53.6% 0.133 257.1)
XYZ	xyz(15.7437, 15.2227, 47.9981)
Luminance	0.1522 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366DB9 #B98236

analogous

#36AFB9 #366DB9 #4036B9

triadic

#366DB9 #B9366D #6DB936

tetradic

#366DB9 #B936AF #B98236 #36B940

square

#366DB9 #B936AF #B98236 #36B940

split-complementary

#366DB9 #B94036 #AFB936

monochromatic

#1A355A #28518A #366DB9 #5D8DD0 #8CAEDD

Accessibility & contrast

On white

5.19

#366DB9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.04

#366DB9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366DB9

5.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366DB9	#FFFFFF	#000000	##FFFFFF
##366DB9	1.00	5.19	4.04	5.19
#FFFFFF	5.19	1.00	21.00	1.00
#000000	4.04	21.00	1.00	21.00
##FFFFFF	5.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4973BC

Deuteranopia (green-blind)

#3467B7

Tritanopia (blue-blind)

#007F8A

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #366db9;
/* rgb */ color: rgb(54, 109, 185);
/* oklch */ color: oklch(53.6% 0.133 257.1);

Tailwind

colors: {
  custom: {
    50: '#7d96ce',
    500: '#366db9',
    950: '#000000',
  },
}

SCSS

$custom: #366db9;
$custom-light: #7d96ce;
$custom-dark: #000000;

JSON

{
  "hex": "#366db9",
  "rgb": {
    "r": 54,
    "g": 109,
    "b": 185
  },
  "hsl": {
    "h": 214.809,
    "s": 54.812,
    "l": 46.863
  },
  "oklch": {
    "l": 0.53597,
    "c": 0.133,
    "h": 257.1
  },
  "luminance": 0.15224
}

Semantic roles & 50–950 ramp

primary

#366DB9

secondary

#C8AB83

accent

#A04ADE

background

#F8F9FC

surface

#EFF1F9

border

#CACBD2

text

#0B0D14

muted

#7C7E82

Preview Lab

Preview with #366DB9

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

Preview Lab → · Contrast checker → · Palette generator →