#366CB2#366CB2

#366CB2 is a mid, vivid cyan. Relative luminance 0.147; OKLCH L 52.9% C 0.125 H 255.9°. Best body text is #FFFFFF at 5.32:1 contrast (WCAG AA passes).

Color values

HEX	#366CB2
RGB	rgb(54, 108, 178)
HSL	hsl(214, 53%, 45%)
HSV	hsv(214, 70%, 70%)
CMYK	cmyk(69.7%, 39.3%, 0%, 30.2%)
CIE-LAB	lab(45.25, 5.69, -42.44)
CIE-LCH	lch(45.25, 42.82, 277.63°)
OKLab	oklab(52.94% -0.0303 -0.1209)
OKLCH	oklch(52.94% 0.125 255.9)
XYZ	xyz(14.9168, 14.7222, 44.1664)
Luminance	0.1472 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366CB2 #B27C36

analogous

#36AAB2 #366CB2 #3E36B2

triadic

#366CB2 #B2366C #6CB236

tetradic

#366CB2 #B236AA #B27C36 #36B23E

square

#366CB2 #B236AA #B27C36 #36B23E

split-complementary

#366CB2 #B23E36 #AAB236

monochromatic

#1A3354 #285083 #366CB2 #598BCD #88ACDB

Accessibility & contrast

On white

5.32

#366CB2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.94

#366CB2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366CB2

5.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366CB2	#FFFFFF	#000000	##FFFFFF
##366CB2	1.00	5.32	3.94	5.32
#FFFFFF	5.32	1.00	21.00	1.00
#000000	3.94	21.00	1.00	21.00
##FFFFFF	5.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C71B5

Deuteranopia (green-blind)

#3966B1

Tritanopia (blue-blind)

#007C86

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #366cb2;
/* rgb */ color: rgb(54, 108, 178);
/* oklch */ color: oklch(52.9% 0.125 255.9);

Tailwind

colors: {
  custom: {
    50: '#7b95c9',
    500: '#366cb2',
    950: '#000000',
  },
}

SCSS

$custom: #366cb2;
$custom-light: #7b95c9;
$custom-dark: #000000;

JSON

{
  "hex": "#366cb2",
  "rgb": {
    "r": 54,
    "g": 108,
    "b": 178
  },
  "hsl": {
    "h": 213.871,
    "s": 53.448,
    "l": 45.49
  },
  "oklch": {
    "l": 0.52935,
    "c": 0.12466,
    "h": 255.9
  },
  "luminance": 0.14724
}

Semantic roles & 50–950 ramp

primary

#366CB2

secondary

#C5A67F

accent

#9D4BDD

background

#F8F9FC

surface

#EFF1F8

border

#CACBD1

text

#0A0D13

muted

#7C7E82

Preview Lab

Preview with #366CB2

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

Preview Lab → · Contrast checker → · Palette generator →