#366CB6#366CB6

#366CB6 is a mid, vivid cyan. Relative luminance 0.149; OKLCH L 53.2% C 0.130 H 256.9°. Best body text is #FFFFFF at 5.28:1 contrast (WCAG AA passes).

Color values

HEX	#366CB6
RGB	rgb(54, 108, 182)
HSL	hsl(215, 54%, 46%)
HSV	hsv(215, 70%, 71%)
CMYK	cmyk(70.3%, 40.7%, 0%, 28.6%)
CIE-LAB	lab(45.48, 7.15, -44.42)
CIE-LCH	lch(45.48, 44.99, 279.14°)
OKLab	oklab(53.18% -0.0294 -0.1267)
OKLCH	oklch(53.18% 0.13 256.9)
XYZ	xyz(15.3243, 14.8852, 46.3124)
Luminance	0.1489 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366CB6 #B68036

analogous

#36ACB6 #366CB6 #4036B6

triadic

#366CB6 #B6366C #6CB636

tetradic

#366CB6 #B636AC #B68036 #36B640

square

#366CB6 #B636AC #B68036 #36B640

split-complementary

#366CB6 #B64036 #ACB636

monochromatic

#1A3458 #285087 #366CB6 #5B8CCE #8AADDC

Accessibility & contrast

On white

5.28

#366CB6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.98

#366CB6 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366CB6

5.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366CB6	#FFFFFF	#000000	##FFFFFF
##366CB6	1.00	5.28	3.98	5.28
#FFFFFF	5.28	1.00	21.00	1.00
#000000	3.98	21.00	1.00	21.00
##FFFFFF	5.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A72B9

Deuteranopia (green-blind)

#3566B4

Tritanopia (blue-blind)

#007D88

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #366cb6;
/* rgb */ color: rgb(54, 108, 182);
/* oklch */ color: oklch(53.2% 0.130 256.9);

Tailwind

colors: {
  custom: {
    50: '#7c95cc',
    500: '#366cb6',
    950: '#000000',
  },
}

SCSS

$custom: #366cb6;
$custom-light: #7c95cc;
$custom-dark: #000000;

JSON

{
  "hex": "#366cb6",
  "rgb": {
    "r": 54,
    "g": 108,
    "b": 182
  },
  "hsl": {
    "h": 214.688,
    "s": 54.237,
    "l": 46.275
  },
  "oklch": {
    "l": 0.53184,
    "c": 0.13006,
    "h": 256.9
  },
  "luminance": 0.14887
}

Semantic roles & 50–950 ramp

primary

#366CB6

secondary

#C6A981

accent

#9F4ADE

background

#F8F9FC

surface

#EFF1F9

border

#CACBD2

text

#0B0D13

muted

#7C7E82

Preview Lab

Preview with #366CB6

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

Preview Lab → · Contrast checker → · Palette generator →