#366DA5#366DA5

#366DA5 is a mid, moderate cyan. Relative luminance 0.144; OKLCH L 52.4% C 0.106 H 250.9°. Best body text is #FFFFFF at 5.40:1 contrast (WCAG AA passes).

Color values

HEX	#366DA5
RGB	rgb(54, 109, 165)
HSL	hsl(210, 51%, 43%)
HSV	hsv(210, 67%, 65%)
CMYK	cmyk(67.3%, 33.9%, 0%, 35.3%)
CIE-LAB	lab(44.85, 0.36, -35.46)
CIE-LCH	lch(44.85, 35.46, 270.59°)
OKLab	oklab(52.4% -0.0348 -0.1005)
OKLCH	oklch(52.4% 0.106 250.9)
XYZ	xyz(13.7790, 14.4368, 37.6504)
Luminance	0.1444 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366DA5 #A56E36

analogous

#36A4A5 #366DA5 #3636A5

triadic

#366DA5 #A5366D #6DA536

tetradic

#366DA5 #A536A4 #A56E36 #36A536

square

#366DA5 #A536A4 #A56E36 #36A536

split-complementary

#366DA5 #A53636 #A4A536

monochromatic

#183049 #274F77 #366DA5 #528CC6 #80AAD5

Accessibility & contrast

On white

5.40

#366DA5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.89

#366DA5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366DA5

5.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366DA5	#FFFFFF	#000000	##FFFFFF
##366DA5	1.00	5.40	3.89	5.40
#FFFFFF	5.40	1.00	21.00	1.00
#000000	3.89	21.00	1.00	21.00
##FFFFFF	5.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5470A7

Deuteranopia (green-blind)

#4565A4

Tritanopia (blue-blind)

#007A81

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #366da5;
/* rgb */ color: rgb(54, 109, 165);
/* oklch */ color: oklch(52.4% 0.106 250.9);

Tailwind

colors: {
  custom: {
    50: '#7996c0',
    500: '#366da5',
    950: '#000000',
  },
}

SCSS

$custom: #366da5;
$custom-light: #7996c0;
$custom-dark: #000000;

JSON

{
  "hex": "#366da5",
  "rgb": {
    "r": 54,
    "g": 109,
    "b": 165
  },
  "hsl": {
    "h": 210.27,
    "s": 50.685,
    "l": 42.941
  },
  "oklch": {
    "l": 0.52397,
    "c": 0.1063,
    "h": 250.9
  },
  "luminance": 0.14438
}

Semantic roles & 50–950 ramp

primary

#366DA5

secondary

#BF9C78

accent

#954EDA

background

#F7F9FB

surface

#EEF1F7

border

#C9CBD0

text

#0A0D12

muted

#7C7E81

Preview Lab

Preview with #366DA5

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

Preview Lab → · Contrast checker → · Palette generator →