#366FC3#366FC3

#366FC3 is a mid, vivid blue. Relative luminance 0.161; OKLCH L 54.7% C 0.144 H 258.2°. Best body text is #FFFFFF at 4.98:1 contrast (WCAG AA passes).

Color values

HEX	#366FC3
RGB	rgb(54, 111, 195)
HSL	hsl(216, 57%, 49%)
HSV	hsv(216, 72%, 76%)
CMYK	cmyk(72.3%, 43.1%, 0%, 23.5%)
CIE-LAB	lab(47.09, 10.04, -49.36)
CIE-LCH	lch(47.09, 50.37, 281.50°)
OKLab	oklab(54.68% -0.0295 -0.1411)
OKLCH	oklch(54.68% 0.144 258.2)
XYZ	xyz(17.0525, 16.0914, 53.8264)
Luminance	0.1609 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366FC3 #C38A36

analogous

#36B6C3 #366FC3 #4436C3

triadic

#366FC3 #C3366F #6FC336

tetradic

#366FC3 #C336B6 #C38A36 #36C344

square

#366FC3 #C336B6 #C38A36 #36C344

split-complementary

#366FC3 #C34436 #B6C336

monochromatic

#1B3863 #295493 #366FC3 #6390D4 #92B2E1

Accessibility & contrast

On white

4.98

#366FC3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.22

#366FC3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366FC3

4.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366FC3	#FFFFFF	#000000	##FFFFFF
##366FC3	1.00	4.98	4.22	4.98
#FFFFFF	4.98	1.00	21.00	1.00
#000000	4.22	21.00	1.00	21.00
##FFFFFF	4.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4677C6

Deuteranopia (green-blind)

#2D6AC1

Tritanopia (blue-blind)

#00838F

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #366fc3;
/* rgb */ color: rgb(54, 111, 195);
/* oklch */ color: oklch(54.7% 0.144 258.2);

Tailwind

colors: {
  custom: {
    50: '#7f97d6',
    500: '#366fc3',
    950: '#000000',
  },
}

SCSS

$custom: #366fc3;
$custom-light: #7f97d6;
$custom-dark: #000000;

JSON

{
  "hex": "#366fc3",
  "rgb": {
    "r": 54,
    "g": 111,
    "b": 195
  },
  "hsl": {
    "h": 215.745,
    "s": 56.627,
    "l": 48.824
  },
  "oklch": {
    "l": 0.54682,
    "c": 0.1442,
    "h": 258.2
  },
  "luminance": 0.16093
}

Semantic roles & 50–950 ramp

primary

#366FC3

secondary

#CCB189

accent

#A248E0

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0D14

muted

#7C7E83

Preview Lab

Preview with #366FC3

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

Preview Lab → · Contrast checker → · Palette generator →