#366CB5#366CB5

#366CB5 is a mid, vivid cyan. Relative luminance 0.148; OKLCH L 53.1% C 0.129 H 256.7°. Best body text is #FFFFFF at 5.29:1 contrast (WCAG AA passes).

Color values

HEX	#366CB5
RGB	rgb(54, 108, 181)
HSL	hsl(214, 54%, 46%)
HSV	hsv(214, 70%, 71%)
CMYK	cmyk(70.2%, 40.3%, 0%, 29%)
CIE-LAB	lab(45.42, 6.78, -43.92)
CIE-LCH	lch(45.42, 44.44, 278.78°)
OKLab	oklab(53.12% -0.0297 -0.1252)
OKLCH	oklch(53.12% 0.129 256.7)
XYZ	xyz(15.2213, 14.8440, 45.7701)
Luminance	0.1485 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366CB5 #B57F36

analogous

#36ABB5 #366CB5 #3F36B5

triadic

#366CB5 #B5366C #6CB536

tetradic

#366CB5 #B536AB #B57F36 #36B53F

square

#366CB5 #B536AB #B57F36 #36B53F

split-complementary

#366CB5 #B53F36 #ABB536

monochromatic

#1A3457 #285086 #366CB5 #5A8BCE #89ADDC

Accessibility & contrast

On white

5.29

#366CB5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.97

#366CB5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366CB5

5.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366CB5	#FFFFFF	#000000	##FFFFFF
##366CB5	1.00	5.29	3.97	5.29
#FFFFFF	5.29	1.00	21.00	1.00
#000000	3.97	21.00	1.00	21.00
##FFFFFF	5.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A72B8

Deuteranopia (green-blind)

#3666B4

Tritanopia (blue-blind)

#007D88

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #366cb5;
/* rgb */ color: rgb(54, 108, 181);
/* oklch */ color: oklch(53.1% 0.129 256.7);

Tailwind

colors: {
  custom: {
    50: '#7c95cb',
    500: '#366cb5',
    950: '#000000',
  },
}

SCSS

$custom: #366cb5;
$custom-light: #7c95cb;
$custom-dark: #000000;

JSON

{
  "hex": "#366cb5",
  "rgb": {
    "r": 54,
    "g": 108,
    "b": 181
  },
  "hsl": {
    "h": 214.488,
    "s": 54.043,
    "l": 46.078
  },
  "oklch": {
    "l": 0.53121,
    "c": 0.12871,
    "h": 256.7
  },
  "luminance": 0.14846
}

Semantic roles & 50–950 ramp

primary

#366CB5

secondary

#C6A981

accent

#9F4ADD

background

#F8F9FC

surface

#EFF1F8

border

#CACBD1

text

#0B0D13

muted

#7C7E82

Preview Lab

Preview with #366CB5

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

Preview Lab → · Contrast checker → · Palette generator →