#366AC5#366AC5

#366AC5 is a mid, vivid blue. Relative luminance 0.151; OKLCH L 53.7% C 0.153 H 260.7°. Best body text is #FFFFFF at 5.22:1 contrast (WCAG AA passes).

Color values

HEX	#366AC5
RGB	rgb(54, 106, 197)
HSL	hsl(218, 57%, 49%)
HSV	hsv(218, 73%, 77%)
CMYK	cmyk(72.6%, 46.2%, 0%, 22.7%)
CIE-LAB	lab(45.80, 13.94, -52.58)
CIE-LCH	lch(45.80, 54.40, 284.85°)
OKLab	oklab(53.72% -0.0247 -0.1507)
OKLCH	oklch(53.72% 0.153 260.7)
XYZ	xyz(16.7498, 15.1217, 54.8485)
Luminance	0.1512 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366AC5 #C59136

analogous

#36B2C5 #366AC5 #4A36C5

triadic

#366AC5 #C5366A #6AC536

tetradic

#366AC5 #C536B2 #C59136 #36C54A

square

#366AC5 #C536B2 #C59136 #36C54A

split-complementary

#366AC5 #C54A36 #B2C536

monochromatic

#1C3665 #295095 #366AC5 #648DD4 #94B0E2

Accessibility & contrast

On white

5.22

#366AC5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.02

#366AC5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366AC5

5.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366AC5	#FFFFFF	#000000	##FFFFFF
##366AC5	1.00	5.22	4.02	5.22
#FFFFFF	5.22	1.00	21.00	1.00
#000000	4.02	21.00	1.00	21.00
##FFFFFF	5.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A73C8

Deuteranopia (green-blind)

#1A66C3

Tritanopia (blue-blind)

#007F8E

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #366ac5;
/* rgb */ color: rgb(54, 106, 197);
/* oklch */ color: oklch(53.7% 0.153 260.7);

Tailwind

colors: {
  custom: {
    50: '#7f94d7',
    500: '#366ac5',
    950: '#000000',
  },
}

SCSS

$custom: #366ac5;
$custom-light: #7f94d7;
$custom-dark: #000000;

JSON

{
  "hex": "#366ac5",
  "rgb": {
    "r": 54,
    "g": 106,
    "b": 197
  },
  "hsl": {
    "h": 218.182,
    "s": 56.972,
    "l": 49.216
  },
  "oklch": {
    "l": 0.53723,
    "c": 0.15273,
    "h": 260.7
  },
  "luminance": 0.15124
}

Semantic roles & 50–950 ramp

primary

#366AC5

secondary

#CDB48A

accent

#A948E0

background

#F8F9FD

surface

#F0F1FA

border

#CBCBD3

text

#0B0D14

muted

#7C7E83

Preview Lab

Preview with #366AC5

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

Preview Lab → · Contrast checker → · Palette generator →