#366EA6#366EA6

#366EA6 is a mid, moderate cyan. Relative luminance 0.147; OKLCH L 52.7% C 0.107 H 250.5°. Best body text is #FFFFFF at 5.33:1 contrast (WCAG AA passes).

Color values

HEX	#366EA6
RGB	rgb(54, 110, 166)
HSL	hsl(210, 51%, 43%)
HSV	hsv(210, 67%, 65%)
CMYK	cmyk(67.5%, 33.7%, 0%, 34.9%)
CIE-LAB	lab(45.20, 0.11, -35.49)
CIE-LCH	lch(45.20, 35.49, 270.17°)
OKLab	oklab(52.69% -0.0355 -0.1005)
OKLCH	oklch(52.69% 0.107 250.5)
XYZ	xyz(13.9776, 14.6879, 38.1674)
Luminance	0.1469 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366EA6 #A66E36

analogous

#36A6A6 #366EA6 #3636A6

triadic

#366EA6 #A6366E #6EA636

tetradic

#366EA6 #A636A6 #A66E36 #36A636

square

#366EA6 #A636A6 #A66E36 #36A636

split-complementary

#366EA6 #A63636 #A6A636

monochromatic

#18314A #274F78 #366EA6 #528DC7 #81ABD6

Accessibility & contrast

On white

5.33

#366EA6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.94

#366EA6 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366EA6

5.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366EA6	#FFFFFF	#000000	##FFFFFF
##366EA6	1.00	5.33	3.94	5.33
#FFFFFF	5.33	1.00	21.00	1.00
#000000	3.94	21.00	1.00	21.00
##FFFFFF	5.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5571A8

Deuteranopia (green-blind)

#4666A5

Tritanopia (blue-blind)

#007B82

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #366ea6;
/* rgb */ color: rgb(54, 110, 166);
/* oklch */ color: oklch(52.7% 0.107 250.5);

Tailwind

colors: {
  custom: {
    50: '#7997c0',
    500: '#366ea6',
    950: '#000000',
  },
}

SCSS

$custom: #366ea6;
$custom-light: #7997c0;
$custom-dark: #000000;

JSON

{
  "hex": "#366ea6",
  "rgb": {
    "r": 54,
    "g": 110,
    "b": 166
  },
  "hsl": {
    "h": 210,
    "s": 50.909,
    "l": 43.137
  },
  "oklch": {
    "l": 0.52689,
    "c": 0.10664,
    "h": 250.5
  },
  "luminance": 0.14689
}

Semantic roles & 50–950 ramp

primary

#366EA6

secondary

#BF9C79

accent

#944DDA

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#0A0D12

muted

#7C7E81

Preview Lab

Preview with #366EA6

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

Preview Lab → · Contrast checker → · Palette generator →