#366BC5#366BC5

#366BC5 is a mid, vivid blue. Relative luminance 0.153; OKLCH L 53.9% C 0.152 H 260.3°. Best body text is #FFFFFF at 5.16:1 contrast (WCAG AA passes).

Color values

HEX	#366BC5
RGB	rgb(54, 107, 197)
HSL	hsl(218, 57%, 49%)
HSV	hsv(218, 73%, 77%)
CMYK	cmyk(72.6%, 45.7%, 0%, 22.7%)
CIE-LAB	lab(46.08, 13.31, -52.13)
CIE-LCH	lch(46.08, 53.80, 284.32°)
OKLab	oklab(53.94% -0.0256 -0.1494)
OKLCH	oklch(53.94% 0.152 260.3)
XYZ	xyz(16.8534, 15.3290, 54.8831)
Luminance	0.1533 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366BC5 #C59036

analogous

#36B3C5 #366BC5 #4836C5

triadic

#366BC5 #C5366B #6BC536

tetradic

#366BC5 #C536B3 #C59036 #36C548

square

#366BC5 #C536B3 #C59036 #36C548

split-complementary

#366BC5 #C54836 #B3C536

monochromatic

#1C3765 #295195 #366BC5 #648ED4 #94B1E2

Accessibility & contrast

On white

5.16

#366BC5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.07

#366BC5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366BC5

5.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366BC5	#FFFFFF	#000000	##FFFFFF
##366BC5	1.00	5.16	4.07	5.16
#FFFFFF	5.16	1.00	21.00	1.00
#000000	4.07	21.00	1.00	21.00
##FFFFFF	5.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D74C8

Deuteranopia (green-blind)

#1E67C3

Tritanopia (blue-blind)

#00808E

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #366bc5;
/* rgb */ color: rgb(54, 107, 197);
/* oklch */ color: oklch(53.9% 0.152 260.3);

Tailwind

colors: {
  custom: {
    50: '#7f94d7',
    500: '#366bc5',
    950: '#000000',
  },
}

SCSS

$custom: #366bc5;
$custom-light: #7f94d7;
$custom-dark: #000000;

JSON

{
  "hex": "#366bc5",
  "rgb": {
    "r": 54,
    "g": 107,
    "b": 197
  },
  "hsl": {
    "h": 217.762,
    "s": 56.972,
    "l": 49.216
  },
  "oklch": {
    "l": 0.5394,
    "c": 0.15155,
    "h": 260.3
  },
  "luminance": 0.15331
}

Semantic roles & 50–950 ramp

primary

#366BC5

secondary

#CDB48A

accent

#A848E0

background

#F8F9FD

surface

#F0F1FA

border

#CBCBD3

text

#0B0D14

muted

#7C7E83

Preview Lab

Preview with #366BC5

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

Preview Lab → · Contrast checker → · Palette generator →