#366EC3#366EC3

#366EC3 is a mid, vivid blue. Relative luminance 0.159; OKLCH L 54.5% C 0.145 H 258.7°. Best body text is #FFFFFF at 5.03:1 contrast (WCAG AA passes).

Color values

HEX	#366EC3
RGB	rgb(54, 110, 195)
HSL	hsl(216, 57%, 49%)
HSV	hsv(216, 72%, 76%)
CMYK	cmyk(72.3%, 43.6%, 0%, 23.5%)
CIE-LAB	lab(46.81, 10.67, -49.81)
CIE-LCH	lch(46.81, 50.94, 282.09°)
OKLab	oklab(54.46% -0.0286 -0.1425)
OKLCH	oklch(54.46% 0.145 258.7)
XYZ	xyz(16.9440, 15.8744, 53.7903)
Luminance	0.1588 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366EC3 #C38B36

analogous

#36B5C3 #366EC3 #4436C3

triadic

#366EC3 #C3366E #6EC336

tetradic

#366EC3 #C336B5 #C38B36 #36C344

square

#366EC3 #C336B5 #C38B36 #36C344

split-complementary

#366EC3 #C34436 #B5C336

monochromatic

#1B3863 #295393 #366EC3 #638FD4 #92B2E1

Accessibility & contrast

On white

5.03

#366EC3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.18

#366EC3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366EC3

5.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366EC3	#FFFFFF	#000000	##FFFFFF
##366EC3	1.00	5.03	4.18	5.03
#FFFFFF	5.03	1.00	21.00	1.00
#000000	4.18	21.00	1.00	21.00
##FFFFFF	5.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4476C6

Deuteranopia (green-blind)

#2A69C1

Tritanopia (blue-blind)

#00828F

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #366ec3;
/* rgb */ color: rgb(54, 110, 195);
/* oklch */ color: oklch(54.5% 0.145 258.7);

Tailwind

colors: {
  custom: {
    50: '#7f97d6',
    500: '#366ec3',
    950: '#000000',
  },
}

SCSS

$custom: #366ec3;
$custom-light: #7f97d6;
$custom-dark: #000000;

JSON

{
  "hex": "#366ec3",
  "rgb": {
    "r": 54,
    "g": 110,
    "b": 195
  },
  "hsl": {
    "h": 216.17,
    "s": 56.627,
    "l": 48.824
  },
  "oklch": {
    "l": 0.54462,
    "c": 0.14535,
    "h": 258.7
  },
  "luminance": 0.15876
}

Semantic roles & 50–950 ramp

primary

#366EC3

secondary

#CCB189

accent

#A448E0

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0D14

muted

#7C7E83

Preview Lab

Preview with #366EC3

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

Preview Lab → · Contrast checker → · Palette generator →