#366FA4#366FA4

#366FA4 is a mid, moderate cyan. Relative luminance 0.148; OKLCH L 52.8% C 0.103 H 248.9°. Best body text is #FFFFFF at 5.29:1 contrast (WCAG AA passes).

Color values

HEX	#366FA4
RGB	rgb(54, 111, 164)
HSL	hsl(209, 50%, 43%)
HSV	hsv(209, 67%, 64%)
CMYK	cmyk(67.1%, 32.3%, 0%, 35.7%)
CIE-LAB	lab(45.40, -1.22, -34.00)
CIE-LCH	lch(45.40, 34.03, 267.95°)
OKLab	oklab(52.81% -0.0372 -0.0962)
OKLCH	oklch(52.81% 0.103 248.9)
XYZ	xyz(13.9041, 14.8321, 37.2449)
Luminance	0.1483 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366FA4 #A46B36

analogous

#36A4A2 #366FA4 #3638A4

triadic

#366FA4 #A4366F #6FA436

tetradic

#366FA4 #A236A4 #A46B36 #38A436

square

#366FA4 #A236A4 #A46B36 #38A436

split-complementary

#366FA4 #A43638 #A4A236

monochromatic

#183148 #275076 #366FA4 #518EC6 #7FACD5

Accessibility & contrast

On white

5.29

#366FA4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.97

#366FA4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366FA4

5.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366FA4	#FFFFFF	#000000	##FFFFFF
##366FA4	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)

#5871A6

Deuteranopia (green-blind)

#4967A3

Tritanopia (blue-blind)

#007C82

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #366fa4;
/* rgb */ color: rgb(54, 111, 164);
/* oklch */ color: oklch(52.8% 0.103 248.9);

Tailwind

colors: {
  custom: {
    50: '#7998bf',
    500: '#366fa4',
    950: '#000000',
  },
}

SCSS

$custom: #366fa4;
$custom-light: #7998bf;
$custom-dark: #000000;

JSON

{
  "hex": "#366fa4",
  "rgb": {
    "r": 54,
    "g": 111,
    "b": 164
  },
  "hsl": {
    "h": 208.909,
    "s": 50.459,
    "l": 42.745
  },
  "oklch": {
    "l": 0.52813,
    "c": 0.10313,
    "h": 248.9
  },
  "luminance": 0.14833
}

Semantic roles & 50–950 ramp

primary

#366FA4

secondary

#BE9A78

accent

#914EDA

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#0A0D12

muted

#7C7E81

Preview Lab

Preview with #366FA4

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

Preview Lab → · Contrast checker → · Palette generator →