#366DC5#366DC5

#366DC5 is a mid, vivid blue. Relative luminance 0.158; OKLCH L 54.4% C 0.149 H 259.4°. Best body text is #FFFFFF at 5.06:1 contrast (WCAG AA passes).

Color values

HEX	#366DC5
RGB	rgb(54, 109, 197)
HSL	hsl(217, 57%, 49%)
HSV	hsv(217, 73%, 77%)
CMYK	cmyk(72.6%, 44.7%, 0%, 22.7%)
CIE-LAB	lab(46.65, 12.04, -51.23)
CIE-LCH	lch(46.65, 52.62, 283.23°)
OKLab	oklab(54.37% -0.0273 -0.1467)
OKLCH	oklch(54.37% 0.149 259.4)
XYZ	xyz(17.0644, 15.7509, 54.9534)
Luminance	0.1575 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366DC5 #C58E36

analogous

#36B5C5 #366DC5 #4736C5

triadic

#366DC5 #C5366D #6DC536

tetradic

#366DC5 #C536B5 #C58E36 #36C547

square

#366DC5 #C536B5 #C58E36 #36C547

split-complementary

#366DC5 #C54736 #B5C536

monochromatic

#1C3865 #295295 #366DC5 #648FD4 #94B2E2

Accessibility & contrast

On white

5.06

#366DC5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.15

#366DC5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366DC5

5.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366DC5	#FFFFFF	#000000	##FFFFFF
##366DC5	1.00	5.06	4.15	5.06
#FFFFFF	5.06	1.00	21.00	1.00
#000000	4.15	21.00	1.00	21.00
##FFFFFF	5.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4176C8

Deuteranopia (green-blind)

#2468C3

Tritanopia (blue-blind)

#00828F

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #366dc5;
/* rgb */ color: rgb(54, 109, 197);
/* oklch */ color: oklch(54.4% 0.149 259.4);

Tailwind

colors: {
  custom: {
    50: '#7f96d7',
    500: '#366dc5',
    950: '#000000',
  },
}

SCSS

$custom: #366dc5;
$custom-light: #7f96d7;
$custom-dark: #000000;

JSON

{
  "hex": "#366dc5",
  "rgb": {
    "r": 54,
    "g": 109,
    "b": 197
  },
  "hsl": {
    "h": 216.923,
    "s": 56.972,
    "l": 49.216
  },
  "oklch": {
    "l": 0.54375,
    "c": 0.1492,
    "h": 259.4
  },
  "luminance": 0.15753
}

Semantic roles & 50–950 ramp

primary

#366DC5

secondary

#CDB38A

accent

#A648E0

background

#F8F9FD

surface

#F0F1FA

border

#CBCBD3

text

#0B0D14

muted

#7C7E83

Preview Lab

Preview with #366DC5

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

Preview Lab → · Contrast checker → · Palette generator →