#366BC3#366BC3

#366BC3 is a mid, vivid blue. Relative luminance 0.152; OKLCH L 53.8% C 0.149 H 260.0°. Best body text is #FFFFFF at 5.19:1 contrast (WCAG AA passes).

Color values

HEX	#366BC3
RGB	rgb(54, 107, 195)
HSL	hsl(217, 57%, 49%)
HSV	hsv(217, 72%, 76%)
CMYK	cmyk(72.3%, 45.1%, 0%, 23.5%)
CIE-LAB	lab(45.96, 12.57, -51.18)
CIE-LCH	lch(45.96, 52.70, 283.80°)
OKLab	oklab(53.81% -0.0259 -0.1466)
OKLCH	oklch(53.81% 0.149 260)
XYZ	xyz(16.6258, 15.2380, 53.6842)
Luminance	0.1524 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366BC3 #C38E36

analogous

#36B2C3 #366BC3 #4836C3

triadic

#366BC3 #C3366B #6BC336

tetradic

#366BC3 #C336B2 #C38E36 #36C348

square

#366BC3 #C336B2 #C38E36 #36C348

split-complementary

#366BC3 #C34836 #B2C336

monochromatic

#1B3663 #295193 #366BC3 #638DD4 #92B0E1

Accessibility & contrast

On white

5.19

#366BC3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.05

#366BC3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366BC3

5.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366BC3	#FFFFFF	#000000	##FFFFFF
##366BC3	1.00	5.19	4.05	5.19
#FFFFFF	5.19	1.00	21.00	1.00
#000000	4.05	21.00	1.00	21.00
##FFFFFF	5.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E74C6

Deuteranopia (green-blind)

#2267C1

Tritanopia (blue-blind)

#00808D

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #366bc3;
/* rgb */ color: rgb(54, 107, 195);
/* oklch */ color: oklch(53.8% 0.149 260.0);

Tailwind

colors: {
  custom: {
    50: '#7f94d6',
    500: '#366bc3',
    950: '#000000',
  },
}

SCSS

$custom: #366bc3;
$custom-light: #7f94d6;
$custom-dark: #000000;

JSON

{
  "hex": "#366bc3",
  "rgb": {
    "r": 54,
    "g": 107,
    "b": 195
  },
  "hsl": {
    "h": 217.447,
    "s": 56.627,
    "l": 48.824
  },
  "oklch": {
    "l": 0.53805,
    "c": 0.14884,
    "h": 260
  },
  "luminance": 0.1524
}

Semantic roles & 50–950 ramp

primary

#366BC3

secondary

#CCB389

accent

#A748E0

background

#F8F9FD

surface

#EFF1FA

border

#CACBD3

text

#0B0D14

muted

#7C7E83

Preview Lab

Preview with #366BC3

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

Preview Lab → · Contrast checker → · Palette generator →