#366EA8#366EA8

#366EA8 is a mid, moderate cyan. Relative luminance 0.148; OKLCH L 52.8% C 0.109 H 251.3°. Best body text is #FFFFFF at 5.31:1 contrast (WCAG AA passes).

Color values

HEX	#366EA8
RGB	rgb(54, 110, 168)
HSL	hsl(211, 51%, 44%)
HSV	hsv(211, 68%, 66%)
CMYK	cmyk(67.9%, 34.5%, 0%, 34.1%)
CIE-LAB	lab(45.31, 0.83, -36.51)
CIE-LCH	lch(45.31, 36.52, 271.29°)
OKLab	oklab(52.8% -0.035 -0.1035)
OKLCH	oklch(52.8% 0.109 251.3)
XYZ	xyz(14.1625, 14.7618, 39.1411)
Luminance	0.1476 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366EA8 #A87036

analogous

#36A7A8 #366EA8 #3736A8

triadic

#366EA8 #A8366E #6EA836

tetradic

#366EA8 #A836A7 #A87036 #36A837

square

#366EA8 #A836A7 #A87036 #36A837

split-complementary

#366EA8 #A83736 #A7A836

monochromatic

#18314B #27507A #366EA8 #538DC8 #82ABD7

Accessibility & contrast

On white

5.31

#366EA8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.95

#366EA8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366EA8

5.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366EA8	#FFFFFF	#000000	##FFFFFF
##366EA8	1.00	5.31	3.95	5.31
#FFFFFF	5.31	1.00	21.00	1.00
#000000	3.95	21.00	1.00	21.00
##FFFFFF	5.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5471AA

Deuteranopia (green-blind)

#4466A7

Tritanopia (blue-blind)

#007C83

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #366ea8;
/* rgb */ color: rgb(54, 110, 168);
/* oklch */ color: oklch(52.8% 0.109 251.3);

Tailwind

colors: {
  custom: {
    50: '#7a97c2',
    500: '#366ea8',
    950: '#000000',
  },
}

SCSS

$custom: #366ea8;
$custom-light: #7a97c2;
$custom-dark: #000000;

JSON

{
  "hex": "#366ea8",
  "rgb": {
    "r": 54,
    "g": 110,
    "b": 168
  },
  "hsl": {
    "h": 210.526,
    "s": 51.351,
    "l": 43.529
  },
  "oklch": {
    "l": 0.52803,
    "c": 0.10925,
    "h": 251.3
  },
  "luminance": 0.14763
}

Semantic roles & 50–950 ramp

primary

#366EA8

secondary

#C09E7A

accent

#954DDB

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#0A0D12

muted

#7C7E81

Preview Lab

Preview with #366EA8

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

Preview Lab → · Contrast checker → · Palette generator →