#366DB3#366DB3

#366DB3 is a mid, vivid cyan. Relative luminance 0.150; OKLCH L 53.2% C 0.125 H 255.6°. Best body text is #FFFFFF at 5.26:1 contrast (WCAG AA passes).

Color values

HEX	#366DB3
RGB	rgb(54, 109, 179)
HSL	hsl(214, 54%, 46%)
HSV	hsv(214, 70%, 70%)
CMYK	cmyk(69.8%, 39.1%, 0%, 29.8%)
CIE-LAB	lab(45.60, 5.43, -42.47)
CIE-LCH	lch(45.60, 42.82, 277.28°)
OKLab	oklab(53.23% -0.0311 -0.121)
OKLCH	oklch(53.23% 0.125 255.6)
XYZ	xyz(15.1237, 14.9746, 44.7324)
Luminance	0.1498 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366DB3 #B37C36

analogous

#36ABB3 #366DB3 #3D36B3

triadic

#366DB3 #B3366D #6DB336

tetradic

#366DB3 #B336AB #B37C36 #36B33D

square

#366DB3 #B336AB #B37C36 #36B33D

split-complementary

#366DB3 #B33D36 #ABB336

monochromatic

#1A3455 #285084 #366DB3 #598CCD #88ADDB

Accessibility & contrast

On white

5.26

#366DB3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.00

#366DB3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366DB3

5.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366DB3	#FFFFFF	#000000	##FFFFFF
##366DB3	1.00	5.26	4.00	5.26
#FFFFFF	5.26	1.00	21.00	1.00
#000000	4.00	21.00	1.00	21.00
##FFFFFF	5.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D72B6

Deuteranopia (green-blind)

#3A67B2

Tritanopia (blue-blind)

#007D87

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #366db3;
/* rgb */ color: rgb(54, 109, 179);
/* oklch */ color: oklch(53.2% 0.125 255.6);

Tailwind

colors: {
  custom: {
    50: '#7c96ca',
    500: '#366db3',
    950: '#000000',
  },
}

SCSS

$custom: #366db3;
$custom-light: #7c96ca;
$custom-dark: #000000;

JSON

{
  "hex": "#366db3",
  "rgb": {
    "r": 54,
    "g": 109,
    "b": 179
  },
  "hsl": {
    "h": 213.6,
    "s": 53.648,
    "l": 45.686
  },
  "oklch": {
    "l": 0.53225,
    "c": 0.12491,
    "h": 255.6
  },
  "luminance": 0.14976
}

Semantic roles & 50–950 ramp

primary

#366DB3

secondary

#C5A780

accent

#9D4BDD

background

#F8F9FC

surface

#EFF1F8

border

#CACBD1

text

#0B0D13

muted

#7C7E82

Preview Lab

Preview with #366DB3

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

Preview Lab → · Contrast checker → · Palette generator →