#366CC6#366CC6

#366CC6 is a mid, vivid blue. Relative luminance 0.156; OKLCH L 54.2% C 0.152 H 260.0°. Best body text is #FFFFFF at 5.10:1 contrast (WCAG AA passes).

Color values

HEX	#366CC6
RGB	rgb(54, 108, 198)
HSL	hsl(218, 57%, 49%)
HSV	hsv(218, 73%, 78%)
CMYK	cmyk(72.7%, 45.5%, 0%, 22.4%)
CIE-LAB	lab(46.42, 13.04, -52.16)
CIE-LCH	lch(46.42, 53.76, 284.04°)
OKLab	oklab(54.22% -0.0263 -0.1494)
OKLCH	oklch(54.22% 0.152 260)
XYZ	xyz(17.0732, 15.5848, 55.5235)
Luminance	0.1559 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366CC6 #C69036

analogous

#36B4C6 #366CC6 #4836C6

triadic

#366CC6 #C6366C #6CC636

tetradic

#366CC6 #C636B4 #C69036 #36C648

square

#366CC6 #C636B4 #C69036 #36C648

split-complementary

#366CC6 #C64836 #B4C636

monochromatic

#1C3866 #295296 #366CC6 #648FD5 #94B2E2

Accessibility & contrast

On white

5.10

#366CC6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.12

#366CC6 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366CC6

5.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366CC6	#FFFFFF	#000000	##FFFFFF
##366CC6	1.00	5.10	4.12	5.10
#FFFFFF	5.10	1.00	21.00	1.00
#000000	4.12	21.00	1.00	21.00
##FFFFFF	5.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E75C9

Deuteranopia (green-blind)

#1F68C4

Tritanopia (blue-blind)

#00818F

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #366cc6;
/* rgb */ color: rgb(54, 108, 198);
/* oklch */ color: oklch(54.2% 0.152 260.0);

Tailwind

colors: {
  custom: {
    50: '#7f95d8',
    500: '#366cc6',
    950: '#000000',
  },
}

SCSS

$custom: #366cc6;
$custom-light: #7f95d8;
$custom-dark: #000000;

JSON

{
  "hex": "#366cc6",
  "rgb": {
    "r": 54,
    "g": 108,
    "b": 198
  },
  "hsl": {
    "h": 217.5,
    "s": 57.143,
    "l": 49.412
  },
  "oklch": {
    "l": 0.54224,
    "c": 0.15172,
    "h": 260
  },
  "luminance": 0.15587
}

Semantic roles & 50–950 ramp

primary

#366CC6

secondary

#CDB48B

accent

#A747E0

background

#F8F9FD

surface

#F0F1FA

border

#CBCBD3

text

#0B0D14

muted

#7C7E83

Preview Lab

Preview with #366CC6

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

Preview Lab → · Contrast checker → · Palette generator →