#366AC3#366AC3

#366AC3 is a mid, vivid blue. Relative luminance 0.150; OKLCH L 53.6% C 0.150 H 260.4°. Best body text is #FFFFFF at 5.24:1 contrast (WCAG AA passes).

Color values

HEX	#366AC3
RGB	rgb(54, 106, 195)
HSL	hsl(218, 57%, 49%)
HSV	hsv(218, 72%, 76%)
CMYK	cmyk(72.3%, 45.6%, 0%, 23.5%)
CIE-LAB	lab(45.68, 13.20, -51.63)
CIE-LCH	lch(45.68, 53.29, 284.34°)
OKLab	oklab(53.59% -0.025 -0.1479)
OKLCH	oklch(53.59% 0.15 260.4)
XYZ	xyz(16.5221, 15.0307, 53.6496)
Luminance	0.1503 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366AC3 #C38F36

analogous

#36B1C3 #366AC3 #4836C3

triadic

#366AC3 #C3366A #6AC336

tetradic

#366AC3 #C336B1 #C38F36 #36C348

square

#366AC3 #C336B1 #C38F36 #36C348

split-complementary

#366AC3 #C34836 #B1C336

monochromatic

#1B3663 #295093 #366AC3 #638CD4 #92AFE1

Accessibility & contrast

On white

5.24

#366AC3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.01

#366AC3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366AC3

5.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366AC3	#FFFFFF	#000000	##FFFFFF
##366AC3	1.00	5.24	4.01	5.24
#FFFFFF	5.24	1.00	21.00	1.00
#000000	4.01	21.00	1.00	21.00
##FFFFFF	5.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C73C6

Deuteranopia (green-blind)

#1E66C1

Tritanopia (blue-blind)

#007F8D

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #366ac3;
/* rgb */ color: rgb(54, 106, 195);
/* oklch */ color: oklch(53.6% 0.150 260.4);

Tailwind

colors: {
  custom: {
    50: '#7f94d6',
    500: '#366ac3',
    950: '#000000',
  },
}

SCSS

$custom: #366ac3;
$custom-light: #7f94d6;
$custom-dark: #000000;

JSON

{
  "hex": "#366ac3",
  "rgb": {
    "r": 54,
    "g": 106,
    "b": 195
  },
  "hsl": {
    "h": 217.872,
    "s": 56.627,
    "l": 48.824
  },
  "oklch": {
    "l": 0.53588,
    "c": 0.15002,
    "h": 260.4
  },
  "luminance": 0.15032
}

Semantic roles & 50–950 ramp

primary

#366AC3

secondary

#CCB389

accent

#A848E0

background

#F8F9FD

surface

#EFF1FA

border

#CACBD3

text

#0B0D14

muted

#7C7E83

Preview Lab

Preview with #366AC3

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

Preview Lab → · Contrast checker → · Palette generator →