#366CC9#366CC9

#366CC9 is a mid, vivid blue. Relative luminance 0.157; OKLCH L 54.4% C 0.156 H 260.5°. Best body text is #FFFFFF at 5.07:1 contrast (WCAG AA passes).

Color values

HEX	#366CC9
RGB	rgb(54, 108, 201)
HSL	hsl(218, 58%, 50%)
HSV	hsv(218, 73%, 79%)
CMYK	cmyk(73.1%, 46.3%, 0%, 21.2%)
CIE-LAB	lab(46.61, 14.15, -53.58)
CIE-LCH	lch(46.61, 55.42, 284.80°)
OKLab	oklab(54.43% -0.0258 -0.1536)
OKLCH	oklch(54.43% 0.156 260.5)
XYZ	xyz(17.4227, 15.7245, 57.3639)
Luminance	0.1573 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366CC9 #C99336

analogous

#36B6C9 #366CC9 #4936C9

triadic

#366CC9 #C9366C #6CC936

tetradic

#366CC9 #C936B6 #C99336 #36C949

square

#366CC9 #C936B6 #C99336 #36C949

split-complementary

#366CC9 #C94936 #B6C936

monochromatic

#1C3869 #295299 #366CC9 #668FD6 #96B3E3

Accessibility & contrast

On white

5.07

#366CC9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.15

#366CC9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366CC9

5.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366CC9	#FFFFFF	#000000	##FFFFFF
##366CC9	1.00	5.07	4.15	5.07
#FFFFFF	5.07	1.00	21.00	1.00
#000000	4.15	21.00	1.00	21.00
##FFFFFF	5.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B76CC

Deuteranopia (green-blind)

#1968C7

Tritanopia (blue-blind)

#008291

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #366cc9;
/* rgb */ color: rgb(54, 108, 201);
/* oklch */ color: oklch(54.4% 0.156 260.5);

Tailwind

colors: {
  custom: {
    50: '#8095da',
    500: '#366cc9',
    950: '#000000',
  },
}

SCSS

$custom: #366cc9;
$custom-light: #8095da;
$custom-dark: #000000;

JSON

{
  "hex": "#366cc9",
  "rgb": {
    "r": 54,
    "g": 108,
    "b": 201
  },
  "hsl": {
    "h": 217.959,
    "s": 57.647,
    "l": 50
  },
  "oklch": {
    "l": 0.54427,
    "c": 0.15576,
    "h": 260.5
  },
  "luminance": 0.15726
}

Semantic roles & 50–950 ramp

primary

#366CC9

secondary

#CEB68C

accent

#A847E1

background

#F8F9FD

surface

#F0F1FB

border

#CBCBD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #366CC9

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

Preview Lab → · Contrast checker → · Palette generator →