#366DC4#366DC4

#366DC4 is a mid, vivid blue. Relative luminance 0.157; OKLCH L 54.3% C 0.148 H 259.3°. Best body text is #FFFFFF at 5.07:1 contrast (WCAG AA passes).

Color values

HEX	#366DC4
RGB	rgb(54, 109, 196)
HSL	hsl(217, 57%, 49%)
HSV	hsv(217, 72%, 77%)
CMYK	cmyk(72.4%, 44.4%, 0%, 23.1%)
CIE-LAB	lab(46.59, 11.67, -50.75)
CIE-LCH	lch(46.59, 52.07, 282.95°)
OKLab	oklab(54.31% -0.0275 -0.1453)
OKLCH	oklch(54.31% 0.148 259.3)
XYZ	xyz(16.9502, 15.7052, 54.3519)
Luminance	0.1571 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366DC4 #C48D36

analogous

#36B4C4 #366DC4 #4636C4

triadic

#366DC4 #C4366D #6DC436

tetradic

#366DC4 #C436B4 #C48D36 #36C446

square

#366DC4 #C436B4 #C48D36 #36C446

split-complementary

#366DC4 #C44636 #B4C436

monochromatic

#1C3864 #295294 #366DC4 #638FD4 #93B1E1

Accessibility & contrast

On white

5.07

#366DC4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.14

#366DC4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366DC4

5.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366DC4	#FFFFFF	#000000	##FFFFFF
##366DC4	1.00	5.07	4.14	5.07
#FFFFFF	5.07	1.00	21.00	1.00
#000000	4.14	21.00	1.00	21.00
##FFFFFF	5.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4175C7

Deuteranopia (green-blind)

#2668C2

Tritanopia (blue-blind)

#00818F

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #366dc4;
/* rgb */ color: rgb(54, 109, 196);
/* oklch */ color: oklch(54.3% 0.148 259.3);

Tailwind

colors: {
  custom: {
    50: '#7f96d6',
    500: '#366dc4',
    950: '#000000',
  },
}

SCSS

$custom: #366dc4;
$custom-light: #7f96d6;
$custom-dark: #000000;

JSON

{
  "hex": "#366dc4",
  "rgb": {
    "r": 54,
    "g": 109,
    "b": 196
  },
  "hsl": {
    "h": 216.761,
    "s": 56.8,
    "l": 49.02
  },
  "oklch": {
    "l": 0.54308,
    "c": 0.14785,
    "h": 259.3
  },
  "luminance": 0.15707
}

Semantic roles & 50–950 ramp

primary

#366DC4

secondary

#CCB289

accent

#A548E0

background

#F8F9FD

surface

#EFF1FA

border

#CACBD3

text

#0B0D14

muted

#7C7E83

Preview Lab

Preview with #366DC4

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

Preview Lab → · Contrast checker → · Palette generator →