#366DA3#366DA3

#366DA3 is a mid, moderate cyan. Relative luminance 0.144; OKLCH L 52.3% C 0.104 H 250.1°. Best body text is #FFFFFF at 5.42:1 contrast (WCAG AA passes).

Color values

HEX	#366DA3
RGB	rgb(54, 109, 163)
HSL	hsl(210, 50%, 43%)
HSV	hsv(210, 67%, 64%)
CMYK	cmyk(66.9%, 33.1%, 0%, 36.1%)
CIE-LAB	lab(44.75, -0.35, -34.44)
CIE-LCH	lch(44.75, 34.44, 269.42°)
OKLab	oklab(52.28% -0.0353 -0.0975)
OKLCH	oklch(52.28% 0.104 250.1)
XYZ	xyz(13.5984, 14.3645, 36.6992)
Luminance	0.1437 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366DA3 #A36C36

analogous

#36A3A2 #366DA3 #3637A3

triadic

#366DA3 #A3366D #6DA336

tetradic

#366DA3 #A236A3 #A36C36 #37A336

square

#366DA3 #A236A3 #A36C36 #37A336

split-complementary

#366DA3 #A33637 #A3A236

monochromatic

#183047 #274E75 #366DA3 #518CC5 #7FAAD5

Accessibility & contrast

On white

5.42

#366DA3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.87

#366DA3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366DA3

5.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366DA3	#FFFFFF	#000000	##FFFFFF
##366DA3	1.00	5.42	3.87	5.42
#FFFFFF	5.42	1.00	21.00	1.00
#000000	3.87	21.00	1.00	21.00
##FFFFFF	5.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5570A5

Deuteranopia (green-blind)

#4665A2

Tritanopia (blue-blind)

#007A80

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #366da3;
/* rgb */ color: rgb(54, 109, 163);
/* oklch */ color: oklch(52.3% 0.104 250.1);

Tailwind

colors: {
  custom: {
    50: '#7996be',
    500: '#366da3',
    950: '#000000',
  },
}

SCSS

$custom: #366da3;
$custom-light: #7996be;
$custom-dark: #000000;

JSON

{
  "hex": "#366da3",
  "rgb": {
    "r": 54,
    "g": 109,
    "b": 163
  },
  "hsl": {
    "h": 209.725,
    "s": 50.23,
    "l": 42.549
  },
  "oklch": {
    "l": 0.52284,
    "c": 0.10371,
    "h": 250.1
  },
  "luminance": 0.14366
}

Semantic roles & 50–950 ramp

primary

#366DA3

secondary

#BE9A77

accent

#934EDA

background

#F7F9FB

surface

#EEF1F7

border

#C9CBD0

text

#0A0D12

muted

#7C7E81

Preview Lab

Preview with #366DA3

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

Preview Lab → · Contrast checker → · Palette generator →