#366CC1#366CC1

#366CC1 is a mid, vivid blue. Relative luminance 0.154; OKLCH L 53.9% C 0.145 H 259.2°. Best body text is #FFFFFF at 5.16:1 contrast (WCAG AA passes).

Color values

HEX	#366CC1
RGB	rgb(54, 108, 193)
HSL	hsl(217, 56%, 48%)
HSV	hsv(217, 72%, 76%)
CMYK	cmyk(72%, 44%, 0%, 24.3%)
CIE-LAB	lab(46.12, 11.20, -49.76)
CIE-LCH	lch(46.12, 51.01, 282.68°)
OKLab	oklab(53.89% -0.0272 -0.1424)
OKLCH	oklch(53.89% 0.145 259.2)
XYZ	xyz(16.5060, 15.3579, 52.5362)
Luminance	0.1536 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366CC1 #C18B36

analogous

#36B1C1 #366CC1 #4636C1

triadic

#366CC1 #C1366C #6CC136

tetradic

#366CC1 #C136B1 #C18B36 #36C146

square

#366CC1 #C136B1 #C18B36 #36C146

split-complementary

#366CC1 #C14636 #B1C136

monochromatic

#1B3661 #295191 #366CC1 #618DD3 #91B0E0

Accessibility & contrast

On white

5.16

#366CC1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.07

#366CC1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366CC1

5.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366CC1	#FFFFFF	#000000	##FFFFFF
##366CC1	1.00	5.16	4.07	5.16
#FFFFFF	5.16	1.00	21.00	1.00
#000000	4.07	21.00	1.00	21.00
##FFFFFF	5.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4274C4

Deuteranopia (green-blind)

#2867BF

Tritanopia (blue-blind)

#00808D

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #366cc1;
/* rgb */ color: rgb(54, 108, 193);
/* oklch */ color: oklch(53.9% 0.145 259.2);

Tailwind

colors: {
  custom: {
    50: '#7e95d4',
    500: '#366cc1',
    950: '#000000',
  },
}

SCSS

$custom: #366cc1;
$custom-light: #7e95d4;
$custom-dark: #000000;

JSON

{
  "hex": "#366cc1",
  "rgb": {
    "r": 54,
    "g": 108,
    "b": 193
  },
  "hsl": {
    "h": 216.691,
    "s": 56.275,
    "l": 48.431
  },
  "oklch": {
    "l": 0.53891,
    "c": 0.14496,
    "h": 259.2
  },
  "luminance": 0.1536
}

Semantic roles & 50–950 ramp

primary

#366CC1

secondary

#CBB188

accent

#A548E0

background

#F8F9FD

surface

#EFF1FA

border

#CACBD3

text

#0B0D14

muted

#7C7E83

Preview Lab

Preview with #366CC1

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

Preview Lab → · Contrast checker → · Palette generator →