#366AA3#366AA3

#366AA3 is a mid, moderate cyan. Relative luminance 0.137; OKLCH L 51.6% C 0.107 H 252.4°. Best body text is #FFFFFF at 5.60:1 contrast (WCAG AA passes).

Color values

HEX	#366AA3
RGB	rgb(54, 106, 163)
HSL	hsl(211, 50%, 43%)
HSV	hsv(211, 67%, 64%)
CMYK	cmyk(66.9%, 35%, 0%, 36.1%)
CIE-LAB	lab(43.85, 1.50, -35.86)
CIE-LCH	lch(43.85, 35.89, 272.39°)
OKLab	oklab(51.58% -0.0322 -0.1017)
OKLCH	oklch(51.58% 0.107 252.4)
XYZ	xyz(13.2838, 13.7353, 36.5944)
Luminance	0.1374 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366AA3 #A36F36

analogous

#36A0A3 #366AA3 #3936A3

triadic

#366AA3 #A3366A #6AA336

tetradic

#366AA3 #A336A0 #A36F36 #36A339

square

#366AA3 #A336A0 #A36F36 #36A339

split-complementary

#366AA3 #A33936 #A0A336

monochromatic

#182E47 #274C75 #366AA3 #5188C5 #7FA8D5

Accessibility & contrast

On white

5.60

#366AA3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.75

#366AA3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366AA3

5.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366AA3	#FFFFFF	#000000	##FFFFFF
##366AA3	1.00	5.60	3.75	5.60
#FFFFFF	5.60	1.00	21.00	1.00
#000000	3.75	21.00	1.00	21.00
##FFFFFF	5.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#516DA5

Deuteranopia (green-blind)

#4263A2

Tritanopia (blue-blind)

#00777F

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #366aa3;
/* rgb */ color: rgb(54, 106, 163);
/* oklch */ color: oklch(51.6% 0.107 252.4);

Tailwind

colors: {
  custom: {
    50: '#7994be',
    500: '#366aa3',
    950: '#000000',
  },
}

SCSS

$custom: #366aa3;
$custom-light: #7994be;
$custom-dark: #000000;

JSON

{
  "hex": "#366aa3",
  "rgb": {
    "r": 54,
    "g": 106,
    "b": 163
  },
  "hsl": {
    "h": 211.376,
    "s": 50.23,
    "l": 42.549
  },
  "oklch": {
    "l": 0.51578,
    "c": 0.10664,
    "h": 252.4
  },
  "luminance": 0.13737
}

Semantic roles & 50–950 ramp

primary

#366AA3

secondary

#BE9C77

accent

#974EDA

background

#F7F9FB

surface

#EEF1F7

border

#C9CBD0

text

#0A0D12

muted

#7C7E81

Preview Lab

Preview with #366AA3

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

Preview Lab → · Contrast checker → · Palette generator →