#366FC5#366FC5

#366FC5 is a mid, vivid blue. Relative luminance 0.162; OKLCH L 54.8% C 0.147 H 258.6°. Best body text is #FFFFFF at 4.96:1 contrast (WCAG AA passes).

Color values

HEX	#366FC5
RGB	rgb(54, 111, 197)
HSL	hsl(216, 57%, 49%)
HSV	hsv(216, 73%, 77%)
CMYK	cmyk(72.6%, 43.7%, 0%, 22.7%)
CIE-LAB	lab(47.21, 10.78, -50.32)
CIE-LCH	lch(47.21, 51.46, 282.09°)
OKLab	oklab(54.81% -0.0291 -0.144)
OKLCH	oklch(54.81% 0.147 258.6)
XYZ	xyz(17.2801, 16.1825, 55.0253)
Luminance	0.1618 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366FC5 #C58C36

analogous

#36B7C5 #366FC5 #4536C5

triadic

#366FC5 #C5366F #6FC536

tetradic

#366FC5 #C536B7 #C58C36 #36C545

square

#366FC5 #C536B7 #C58C36 #36C545

split-complementary

#366FC5 #C54536 #B7C536

monochromatic

#1C3965 #295495 #366FC5 #6491D4 #94B3E2

Accessibility & contrast

On white

4.96

#366FC5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.24

#366FC5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366FC5

4.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366FC5	#FFFFFF	#000000	##FFFFFF
##366FC5	1.00	4.96	4.24	4.96
#FFFFFF	4.96	1.00	21.00	1.00
#000000	4.24	21.00	1.00	21.00
##FFFFFF	4.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4477C8

Deuteranopia (green-blind)

#2A6AC3

Tritanopia (blue-blind)

#008390

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #366fc5;
/* rgb */ color: rgb(54, 111, 197);
/* oklch */ color: oklch(54.8% 0.147 258.6);

Tailwind

colors: {
  custom: {
    50: '#7f97d7',
    500: '#366fc5',
    950: '#000000',
  },
}

SCSS

$custom: #366fc5;
$custom-light: #7f97d7;
$custom-dark: #000000;

JSON

{
  "hex": "#366fc5",
  "rgb": {
    "r": 54,
    "g": 111,
    "b": 197
  },
  "hsl": {
    "h": 216.084,
    "s": 56.972,
    "l": 49.216
  },
  "oklch": {
    "l": 0.54813,
    "c": 0.14688,
    "h": 258.6
  },
  "luminance": 0.16184
}

Semantic roles & 50–950 ramp

primary

#366FC5

secondary

#CDB28A

accent

#A348E0

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0B0D14

muted

#7C7E83

Preview Lab

Preview with #366FC5

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

Preview Lab → · Contrast checker → · Palette generator →