#366DB2#366DB2

#366DB2 is a mid, vivid cyan. Relative luminance 0.149; OKLCH L 53.2% C 0.124 H 255.3°. Best body text is #FFFFFF at 5.27:1 contrast (WCAG AA passes).

Color values

HEX	#366DB2
RGB	rgb(54, 109, 178)
HSL	hsl(213, 53%, 45%)
HSV	hsv(213, 70%, 70%)
CMYK	cmyk(69.7%, 38.8%, 0%, 30.2%)
CIE-LAB	lab(45.54, 5.06, -41.98)
CIE-LCH	lch(45.54, 42.28, 276.88°)
OKLab	oklab(53.16% -0.0313 -0.1195)
OKLCH	oklch(53.16% 0.124 255.3)
XYZ	xyz(15.0229, 14.9343, 44.2017)
Luminance	0.1494 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366DB2 #B27B36

analogous

#36ABB2 #366DB2 #3D36B2

triadic

#366DB2 #B2366D #6DB236

tetradic

#366DB2 #B236AB #B27B36 #36B23D

square

#366DB2 #B236AB #B27B36 #36B23D

split-complementary

#366DB2 #B23D36 #ABB236

monochromatic

#1A3354 #285083 #366DB2 #598CCD #88ADDB

Accessibility & contrast

On white

5.27

#366DB2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.99

#366DB2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366DB2

5.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366DB2	#FFFFFF	#000000	##FFFFFF
##366DB2	1.00	5.27	3.99	5.27
#FFFFFF	5.27	1.00	21.00	1.00
#000000	3.99	21.00	1.00	21.00
##FFFFFF	5.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E72B5

Deuteranopia (green-blind)

#3B67B1

Tritanopia (blue-blind)

#007D87

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #366db2;
/* rgb */ color: rgb(54, 109, 178);
/* oklch */ color: oklch(53.2% 0.124 255.3);

Tailwind

colors: {
  custom: {
    50: '#7b96c9',
    500: '#366db2',
    950: '#000000',
  },
}

SCSS

$custom: #366db2;
$custom-light: #7b96c9;
$custom-dark: #000000;

JSON

{
  "hex": "#366db2",
  "rgb": {
    "r": 54,
    "g": 109,
    "b": 178
  },
  "hsl": {
    "h": 213.387,
    "s": 53.448,
    "l": 45.49
  },
  "oklch": {
    "l": 0.53163,
    "c": 0.12357,
    "h": 255.3
  },
  "luminance": 0.14936
}

Semantic roles & 50–950 ramp

primary

#366DB2

secondary

#C5A67F

accent

#9C4BDD

background

#F8F9FC

surface

#EFF1F8

border

#CACBD1

text

#0A0D13

muted

#7C7E82

Preview Lab

Preview with #366DB2

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

Preview Lab → · Contrast checker → · Palette generator →