#366BC6#366BC6

#366BC6 is a mid, vivid blue. Relative luminance 0.154; OKLCH L 54.0% C 0.153 H 260.4°. Best body text is #FFFFFF at 5.15:1 contrast (WCAG AA passes).

Color values

HEX	#366BC6
RGB	rgb(54, 107, 198)
HSL	hsl(218, 57%, 49%)
HSV	hsv(218, 73%, 78%)
CMYK	cmyk(72.7%, 46%, 0%, 22.4%)
CIE-LAB	lab(46.14, 13.68, -52.61)
CIE-LCH	lch(46.14, 54.36, 284.57°)
OKLab	oklab(54.01% -0.0254 -0.1508)
OKLCH	oklch(54.01% 0.153 260.4)
XYZ	xyz(16.9684, 15.3750, 55.4885)
Luminance	0.1538 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366BC6 #C69136

analogous

#36B3C6 #366BC6 #4936C6

triadic

#366BC6 #C6366B #6BC636

tetradic

#366BC6 #C636B3 #C69136 #36C649

square

#366BC6 #C636B3 #C69136 #36C649

split-complementary

#366BC6 #C64936 #B3C636

monochromatic

#1C3766 #295196 #366BC6 #648ED5 #94B1E2

Accessibility & contrast

On white

5.15

#366BC6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.08

#366BC6 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366BC6

5.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366BC6	#FFFFFF	#000000	##FFFFFF
##366BC6	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)

#3C74C9

Deuteranopia (green-blind)

#1C67C4

Tritanopia (blue-blind)

#00808F

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #366bc6;
/* rgb */ color: rgb(54, 107, 198);
/* oklch */ color: oklch(54.0% 0.153 260.4);

Tailwind

colors: {
  custom: {
    50: '#7f94d8',
    500: '#366bc6',
    950: '#000000',
  },
}

SCSS

$custom: #366bc6;
$custom-light: #7f94d8;
$custom-dark: #000000;

JSON

{
  "hex": "#366bc6",
  "rgb": {
    "r": 54,
    "g": 107,
    "b": 198
  },
  "hsl": {
    "h": 217.917,
    "s": 57.143,
    "l": 49.412
  },
  "oklch": {
    "l": 0.54007,
    "c": 0.1529,
    "h": 260.4
  },
  "luminance": 0.15377
}

Semantic roles & 50–950 ramp

primary

#366BC6

secondary

#CDB58B

accent

#A847E0

background

#F8F9FD

surface

#F0F1FA

border

#CBCBD3

text

#0B0D14

muted

#7C7E83

Preview Lab

Preview with #366BC6

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

Preview Lab → · Contrast checker → · Palette generator →