#366DA8#366DA8

#366DA8 is a mid, moderate cyan. Relative luminance 0.145; OKLCH L 52.6% C 0.110 H 252.1°. Best body text is #FFFFFF at 5.37:1 contrast (WCAG AA passes).

Color values

HEX	#366DA8
RGB	rgb(54, 109, 168)
HSL	hsl(211, 51%, 44%)
HSV	hsv(211, 68%, 66%)
CMYK	cmyk(67.9%, 35.1%, 0%, 34.1%)
CIE-LAB	lab(45.01, 1.44, -36.98)
CIE-LCH	lch(45.01, 37.01, 272.23°)
OKLab	oklab(52.57% -0.0339 -0.1049)
OKLCH	oklch(52.57% 0.11 252.1)
XYZ	xyz(14.0552, 14.5473, 39.1054)
Luminance	0.1455 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366DA8 #A87136

analogous

#36A6A8 #366DA8 #3836A8

triadic

#366DA8 #A8366D #6DA836

tetradic

#366DA8 #A836A6 #A87136 #36A838

square

#366DA8 #A836A6 #A87136 #36A838

split-complementary

#366DA8 #A83836 #A6A836

monochromatic

#18314B #274F7A #366DA8 #538CC8 #82ABD7

Accessibility & contrast

On white

5.37

#366DA8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.91

#366DA8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366DA8

5.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366DA8	#FFFFFF	#000000	##FFFFFF
##366DA8	1.00	5.37	3.91	5.37
#FFFFFF	5.37	1.00	21.00	1.00
#000000	3.91	21.00	1.00	21.00
##FFFFFF	5.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5370AA

Deuteranopia (green-blind)

#4366A7

Tritanopia (blue-blind)

#007B82

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #366da8;
/* rgb */ color: rgb(54, 109, 168);
/* oklch */ color: oklch(52.6% 0.110 252.1);

Tailwind

colors: {
  custom: {
    50: '#7a96c2',
    500: '#366da8',
    950: '#000000',
  },
}

SCSS

$custom: #366da8;
$custom-light: #7a96c2;
$custom-dark: #000000;

JSON

{
  "hex": "#366da8",
  "rgb": {
    "r": 54,
    "g": 109,
    "b": 168
  },
  "hsl": {
    "h": 211.053,
    "s": 51.351,
    "l": 43.529
  },
  "oklch": {
    "l": 0.52569,
    "c": 0.11025,
    "h": 252.1
  },
  "luminance": 0.14549
}

Semantic roles & 50–950 ramp

primary

#366DA8

secondary

#C09E7A

accent

#964DDB

background

#F7F9FB

surface

#EEF1F7

border

#C9CBD0

text

#0A0D12

muted

#7C7E81

Preview Lab

Preview with #366DA8

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

Preview Lab → · Contrast checker → · Palette generator →