#366CC0#366CC0

#366CC0 is a mid, vivid blue. Relative luminance 0.153; OKLCH L 53.8% C 0.144 H 259.0°. Best body text is #FFFFFF at 5.17:1 contrast (WCAG AA passes).

Color values

HEX	#366CC0
RGB	rgb(54, 108, 192)
HSL	hsl(217, 56%, 48%)
HSV	hsv(217, 72%, 75%)
CMYK	cmyk(71.9%, 43.7%, 0%, 24.7%)
CIE-LAB	lab(46.06, 10.83, -49.28)
CIE-LCH	lch(46.06, 50.46, 282.39°)
OKLab	oklab(53.83% -0.0274 -0.141)
OKLCH	oklch(53.83% 0.144 259)
XYZ	xyz(16.3949, 15.3134, 51.9507)
Luminance	0.1532 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366CC0 #C08A36

analogous

#36B1C0 #366CC0 #4536C0

triadic

#366CC0 #C0366C #6CC036

tetradic

#366CC0 #C036B1 #C08A36 #36C045

square

#366CC0 #C036B1 #C08A36 #36C045

split-complementary

#366CC0 #C04536 #B1C036

monochromatic

#1B3660 #295190 #366CC0 #618DD2 #90B0E0

Accessibility & contrast

On white

5.17

#366CC0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.06

#366CC0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366CC0

5.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366CC0	#FFFFFF	#000000	##FFFFFF
##366CC0	1.00	5.17	4.06	5.17
#FFFFFF	5.17	1.00	21.00	1.00
#000000	4.06	21.00	1.00	21.00
##FFFFFF	5.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4374C3

Deuteranopia (green-blind)

#2967BE

Tritanopia (blue-blind)

#00808C

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #366cc0;
/* rgb */ color: rgb(54, 108, 192);
/* oklch */ color: oklch(53.8% 0.144 259.0);

Tailwind

colors: {
  custom: {
    50: '#7e95d3',
    500: '#366cc0',
    950: '#000000',
  },
}

SCSS

$custom: #366cc0;
$custom-light: #7e95d3;
$custom-dark: #000000;

JSON

{
  "hex": "#366cc0",
  "rgb": {
    "r": 54,
    "g": 108,
    "b": 192
  },
  "hsl": {
    "h": 216.522,
    "s": 56.098,
    "l": 48.235
  },
  "oklch": {
    "l": 0.53825,
    "c": 0.14361,
    "h": 259
  },
  "luminance": 0.15315
}

Semantic roles & 50–950 ramp

primary

#366CC0

secondary

#CBB087

accent

#A448DF

background

#F8F9FD

surface

#EFF1FA

border

#CACBD3

text

#0B0D14

muted

#7C7E83

Preview Lab

Preview with #366CC0

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

Preview Lab → · Contrast checker → · Palette generator →