#366BC4#366BC4

#366BC4 is a mid, vivid blue. Relative luminance 0.153; OKLCH L 53.9% C 0.150 H 260.1°. Best body text is #FFFFFF at 5.18:1 contrast (WCAG AA passes).

Color values

HEX	#366BC4
RGB	rgb(54, 107, 196)
HSL	hsl(218, 57%, 49%)
HSV	hsv(218, 72%, 77%)
CMYK	cmyk(72.4%, 45.4%, 0%, 23.1%)
CIE-LAB	lab(46.02, 12.94, -51.65)
CIE-LCH	lch(46.02, 53.25, 284.06°)
OKLab	oklab(53.87% -0.0257 -0.148)
OKLCH	oklch(53.87% 0.15 260.1)
XYZ	xyz(16.7392, 15.2834, 54.2816)
Luminance	0.1529 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366BC4 #C48F36

analogous

#36B2C4 #366BC4 #4836C4

triadic

#366BC4 #C4366B #6BC436

tetradic

#366BC4 #C436B2 #C48F36 #36C448

square

#366BC4 #C436B2 #C48F36 #36C448

split-complementary

#366BC4 #C44836 #B2C436

monochromatic

#1C3764 #295194 #366BC4 #638DD4 #93B0E1

Accessibility & contrast

On white

5.18

#366BC4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.06

#366BC4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366BC4

5.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366BC4	#FFFFFF	#000000	##FFFFFF
##366BC4	1.00	5.18	4.06	5.18
#FFFFFF	5.18	1.00	21.00	1.00
#000000	4.06	21.00	1.00	21.00
##FFFFFF	5.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D74C7

Deuteranopia (green-blind)

#2067C2

Tritanopia (blue-blind)

#00808E

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #366bc4;
/* rgb */ color: rgb(54, 107, 196);
/* oklch */ color: oklch(53.9% 0.150 260.1);

Tailwind

colors: {
  custom: {
    50: '#7f94d6',
    500: '#366bc4',
    950: '#000000',
  },
}

SCSS

$custom: #366bc4;
$custom-light: #7f94d6;
$custom-dark: #000000;

JSON

{
  "hex": "#366bc4",
  "rgb": {
    "r": 54,
    "g": 107,
    "b": 196
  },
  "hsl": {
    "h": 217.606,
    "s": 56.8,
    "l": 49.02
  },
  "oklch": {
    "l": 0.53872,
    "c": 0.15019,
    "h": 260.1
  },
  "luminance": 0.15285
}

Semantic roles & 50–950 ramp

primary

#366BC4

secondary

#CCB389

accent

#A748E0

background

#F8F9FD

surface

#EFF1FA

border

#CACBD3

text

#0B0D14

muted

#7C7E83

Preview Lab

Preview with #366BC4

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

Preview Lab → · Contrast checker → · Palette generator →