#366EA5#366EA5

#366EA5 is a mid, moderate cyan. Relative luminance 0.147; OKLCH L 52.6% C 0.105 H 250.1°. Best body text is #FFFFFF at 5.34:1 contrast (WCAG AA passes).

Color values

HEX	#366EA5
RGB	rgb(54, 110, 165)
HSL	hsl(210, 51%, 43%)
HSV	hsv(210, 67%, 65%)
CMYK	cmyk(67.3%, 33.3%, 0%, 35.3%)
CIE-LAB	lab(45.15, -0.25, -34.99)
CIE-LCH	lch(45.15, 34.99, 269.59°)
OKLab	oklab(52.63% -0.0358 -0.0991)
OKLCH	oklch(52.63% 0.105 250.1)
XYZ	xyz(13.8863, 14.6513, 37.6862)
Luminance	0.1465 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366EA5 #A56D36

analogous

#36A5A4 #366EA5 #3636A5

triadic

#366EA5 #A5366E #6EA536

tetradic

#366EA5 #A436A5 #A56D36 #36A536

square

#366EA5 #A436A5 #A56D36 #36A536

split-complementary

#366EA5 #A53636 #A5A436

monochromatic

#183149 #274F77 #366EA5 #528DC6 #80ABD5

Accessibility & contrast

On white

5.34

#366EA5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.93

#366EA5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366EA5

5.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366EA5	#FFFFFF	#000000	##FFFFFF
##366EA5	1.00	5.34	3.93	5.34
#FFFFFF	5.34	1.00	21.00	1.00
#000000	3.93	21.00	1.00	21.00
##FFFFFF	5.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5671A7

Deuteranopia (green-blind)

#4666A4

Tritanopia (blue-blind)

#007B82

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #366ea5;
/* rgb */ color: rgb(54, 110, 165);
/* oklch */ color: oklch(52.6% 0.105 250.1);

Tailwind

colors: {
  custom: {
    50: '#7997c0',
    500: '#366ea5',
    950: '#000000',
  },
}

SCSS

$custom: #366ea5;
$custom-light: #7997c0;
$custom-dark: #000000;

JSON

{
  "hex": "#366ea5",
  "rgb": {
    "r": 54,
    "g": 110,
    "b": 165
  },
  "hsl": {
    "h": 209.73,
    "s": 50.685,
    "l": 42.941
  },
  "oklch": {
    "l": 0.52633,
    "c": 0.10534,
    "h": 250.1
  },
  "luminance": 0.14653
}

Semantic roles & 50–950 ramp

primary

#366EA5

secondary

#BF9B78

accent

#934EDA

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#0A0D12

muted

#7C7E81

Preview Lab

Preview with #366EA5

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

Preview Lab → · Contrast checker → · Palette generator →