#366FB7#366FB7

#366FB7 is a mid, vivid cyan. Relative luminance 0.156; OKLCH L 53.9% C 0.128 H 255.5°. Best body text is #FFFFFF at 5.10:1 contrast (WCAG AA passes).

Color values

HEX	#366FB7
RGB	rgb(54, 111, 183)
HSL	hsl(213, 54%, 46%)
HSV	hsv(213, 70%, 72%)
CMYK	cmyk(70.5%, 39.3%, 0%, 28.2%)
CIE-LAB	lab(46.41, 5.64, -43.52)
CIE-LCH	lch(46.41, 43.88, 277.39°)
OKLab	oklab(53.93% -0.0321 -0.124)
OKLCH	oklch(53.93% 0.128 255.5)
XYZ	xyz(15.7499, 15.5704, 46.9659)
Luminance	0.1557 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366FB7 #B77E36

analogous

#36B0B7 #366FB7 #3E36B7

triadic

#366FB7 #B7366F #6FB736

tetradic

#366FB7 #B736B0 #B77E36 #36B73E

square

#366FB7 #B736B0 #B77E36 #36B73E

split-complementary

#366FB7 #B73E36 #B0B736

monochromatic

#1A3658 #285288 #366FB7 #5B8ECF #8BAFDD

Accessibility & contrast

On white

5.10

#366FB7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.11

#366FB7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366FB7

5.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366FB7	#FFFFFF	#000000	##FFFFFF
##366FB7	1.00	5.10	4.11	5.10
#FFFFFF	5.10	1.00	21.00	1.00
#000000	4.11	21.00	1.00	21.00
##FFFFFF	5.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E74BA

Deuteranopia (green-blind)

#3A68B6

Tritanopia (blue-blind)

#00808A

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #366fb7;
/* rgb */ color: rgb(54, 111, 183);
/* oklch */ color: oklch(53.9% 0.128 255.5);

Tailwind

colors: {
  custom: {
    50: '#7c97cd',
    500: '#366fb7',
    950: '#000000',
  },
}

SCSS

$custom: #366fb7;
$custom-light: #7c97cd;
$custom-dark: #000000;

JSON

{
  "hex": "#366fb7",
  "rgb": {
    "r": 54,
    "g": 111,
    "b": 183
  },
  "hsl": {
    "h": 213.488,
    "s": 54.43,
    "l": 46.471
  },
  "oklch": {
    "l": 0.53925,
    "c": 0.12809,
    "h": 255.5
  },
  "luminance": 0.15572
}

Semantic roles & 50–950 ramp

primary

#366FB7

secondary

#C7A882

accent

#9C4ADE

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0D13

muted

#7C7E82

Preview Lab

Preview with #366FB7

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

Preview Lab → · Contrast checker → · Palette generator →