#366EA1#366EA1

#366EA1 is a mid, moderate cyan. Relative luminance 0.145; OKLCH L 52.4% C 0.100 H 248.3°. Best body text is #FFFFFF at 5.38:1 contrast (WCAG AA passes).

Color values

HEX	#366EA1
RGB	rgb(54, 110, 161)
HSL	hsl(209, 50%, 42%)
HSV	hsv(209, 66%, 63%)
CMYK	cmyk(66.5%, 31.7%, 0%, 36.9%)
CIE-LAB	lab(44.95, -1.67, -32.95)
CIE-LCH	lch(44.95, 32.99, 267.10°)
OKLab	oklab(52.41% -0.037 -0.0931)
OKLCH	oklch(52.41% 0.1 248.3)
XYZ	xyz(13.5279, 14.5080, 35.7987)
Luminance	0.1451 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366EA1 #A16936

analogous

#36A19E #366EA1 #3639A1

triadic

#366EA1 #A1366E #6EA136

tetradic

#366EA1 #9E36A1 #A16936 #39A136

square

#366EA1 #9E36A1 #A16936 #39A136

split-complementary

#366EA1 #A13639 #A19E36

monochromatic

#172F45 #274F73 #366EA1 #508DC4 #7EABD4

Accessibility & contrast

On white

5.38

#366EA1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.90

#366EA1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366EA1

5.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366EA1	#FFFFFF	#000000	##FFFFFF
##366EA1	1.00	5.38	3.90	5.38
#FFFFFF	5.38	1.00	21.00	1.00
#000000	3.90	21.00	1.00	21.00
##FFFFFF	5.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5870A3

Deuteranopia (green-blind)

#4966A0

Tritanopia (blue-blind)

#007A80

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #366ea1;
/* rgb */ color: rgb(54, 110, 161);
/* oklch */ color: oklch(52.4% 0.100 248.3);

Tailwind

colors: {
  custom: {
    50: '#7897bd',
    500: '#366ea1',
    950: '#000000',
  },
}

SCSS

$custom: #366ea1;
$custom-light: #7897bd;
$custom-dark: #000000;

JSON

{
  "hex": "#366ea1",
  "rgb": {
    "r": 54,
    "g": 110,
    "b": 161
  },
  "hsl": {
    "h": 208.598,
    "s": 49.767,
    "l": 42.157
  },
  "oklch": {
    "l": 0.5241,
    "c": 0.10021,
    "h": 248.3
  },
  "luminance": 0.14509
}

Semantic roles & 50–950 ramp

primary

#366EA1

secondary

#BD9876

accent

#914FD9

background

#F7F9FB

surface

#EEF2F6

border

#C9CCD0

text

#0A0D12

muted

#7C7E81

Preview Lab

Preview with #366EA1

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

Preview Lab → · Contrast checker → · Palette generator →