#366EA3#366EA3

#366EA3 is a mid, moderate cyan. Relative luminance 0.146; OKLCH L 52.5% C 0.103 H 249.3°. Best body text is #FFFFFF at 5.36:1 contrast (WCAG AA passes).

Color values

HEX	#366EA3
RGB	rgb(54, 110, 163)
HSL	hsl(209, 50%, 43%)
HSV	hsv(209, 67%, 64%)
CMYK	cmyk(66.9%, 32.5%, 0%, 36.1%)
CIE-LAB	lab(45.05, -0.96, -33.97)
CIE-LCH	lch(45.05, 33.98, 268.38°)
OKLab	oklab(52.52% -0.0364 -0.0961)
OKLCH	oklch(52.52% 0.103 249.3)
XYZ	xyz(13.7057, 14.5791, 36.7350)
Luminance	0.1458 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366EA3 #A36B36

analogous

#36A3A1 #366EA3 #3638A3

triadic

#366EA3 #A3366E #6EA336

tetradic

#366EA3 #A136A3 #A36B36 #38A336

square

#366EA3 #A136A3 #A36B36 #38A336

split-complementary

#366EA3 #A33638 #A3A136

monochromatic

#183047 #274F75 #366EA3 #518DC5 #7FABD5

Accessibility & contrast

On white

5.36

#366EA3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.92

#366EA3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366EA3

5.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366EA3	#FFFFFF	#000000	##FFFFFF
##366EA3	1.00	5.36	3.92	5.36
#FFFFFF	5.36	1.00	21.00	1.00
#000000	3.92	21.00	1.00	21.00
##FFFFFF	5.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5770A5

Deuteranopia (green-blind)

#4866A2

Tritanopia (blue-blind)

#007A81

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #366ea3;
/* rgb */ color: rgb(54, 110, 163);
/* oklch */ color: oklch(52.5% 0.103 249.3);

Tailwind

colors: {
  custom: {
    50: '#7997be',
    500: '#366ea3',
    950: '#000000',
  },
}

SCSS

$custom: #366ea3;
$custom-light: #7997be;
$custom-dark: #000000;

JSON

{
  "hex": "#366ea3",
  "rgb": {
    "r": 54,
    "g": 110,
    "b": 163
  },
  "hsl": {
    "h": 209.174,
    "s": 50.23,
    "l": 42.549
  },
  "oklch": {
    "l": 0.52521,
    "c": 0.10277,
    "h": 249.3
  },
  "luminance": 0.1458
}

Semantic roles & 50–950 ramp

primary

#366EA3

secondary

#BE9977

accent

#924EDA

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#0A0D12

muted

#7C7E81

Preview Lab

Preview with #366EA3

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

Preview Lab → · Contrast checker → · Palette generator →