#366CB3#366CB3

#366CB3 is a mid, vivid cyan. Relative luminance 0.148; OKLCH L 53.0% C 0.126 H 256.2°. Best body text is #FFFFFF at 5.31:1 contrast (WCAG AA passes).

Color values

HEX	#366CB3
RGB	rgb(54, 108, 179)
HSL	hsl(214, 54%, 46%)
HSV	hsv(214, 70%, 70%)
CMYK	cmyk(69.8%, 39.7%, 0%, 29.8%)
CIE-LAB	lab(45.31, 6.05, -42.94)
CIE-LCH	lch(45.31, 43.36, 278.02°)
OKLab	oklab(53% -0.0301 -0.1224)
OKLCH	oklch(53% 0.126 256.2)
XYZ	xyz(15.0176, 14.7625, 44.6971)
Luminance	0.1476 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366CB3 #B37D36

analogous

#36AAB3 #366CB3 #3E36B3

triadic

#366CB3 #B3366C #6CB336

tetradic

#366CB3 #B336AA #B37D36 #36B33E

square

#366CB3 #B336AA #B37D36 #36B33E

split-complementary

#366CB3 #B33E36 #AAB336

monochromatic

#1A3355 #285084 #366CB3 #598BCD #88ACDB

Accessibility & contrast

On white

5.31

#366CB3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.95

#366CB3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366CB3

5.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366CB3	#FFFFFF	#000000	##FFFFFF
##366CB3	1.00	5.31	3.95	5.31
#FFFFFF	5.31	1.00	21.00	1.00
#000000	3.95	21.00	1.00	21.00
##FFFFFF	5.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B72B6

Deuteranopia (green-blind)

#3866B2

Tritanopia (blue-blind)

#007C87

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #366cb3;
/* rgb */ color: rgb(54, 108, 179);
/* oklch */ color: oklch(53.0% 0.126 256.2);

Tailwind

colors: {
  custom: {
    50: '#7c95ca',
    500: '#366cb3',
    950: '#000000',
  },
}

SCSS

$custom: #366cb3;
$custom-light: #7c95ca;
$custom-dark: #000000;

JSON

{
  "hex": "#366cb3",
  "rgb": {
    "r": 54,
    "g": 108,
    "b": 179
  },
  "hsl": {
    "h": 214.08,
    "s": 53.648,
    "l": 45.686
  },
  "oklch": {
    "l": 0.52997,
    "c": 0.12601,
    "h": 256.2
  },
  "luminance": 0.14764
}

Semantic roles & 50–950 ramp

primary

#366CB3

secondary

#C5A780

accent

#9E4BDD

background

#F8F9FC

surface

#EFF1F8

border

#CACBD1

text

#0B0D13

muted

#7C7E82

Preview Lab

Preview with #366CB3

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

Preview Lab → · Contrast checker → · Palette generator →