#3366BA#3366BA

#3366BA is a mid, vivid blue. Relative luminance 0.138; OKLCH L 52.0% C 0.143 H 259.9°. Best body text is #FFFFFF at 5.60:1 contrast (WCAG AA passes).

Color values

HEX	#3366BA
RGB	rgb(51, 102, 186)
HSL	hsl(217, 57%, 46%)
HSV	hsv(217, 73%, 73%)
CMYK	cmyk(72.6%, 45.2%, 0%, 27.1%)
CIE-LAB	lab(43.87, 11.99, -49.31)
CIE-LCH	lch(43.87, 50.75, 283.66°)
OKLab	oklab(51.99% -0.0253 -0.1412)
OKLCH	oklch(51.99% 0.143 259.9)
XYZ	xyz(14.9763, 13.7501, 48.3096)
Luminance	0.1375 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3366BA #BA8733

analogous

#33AABA #3366BA #4333BA

triadic

#3366BA #BA3366 #66BA33

tetradic

#3366BA #BA33AA #BA8733 #33BA43

square

#3366BA #BA33AA #BA8733 #33BA43

split-complementary

#3366BA #BA4333 #AABA33

monochromatic

#19315A #264C8A #3366BA #5986D1 #89A9DF

Accessibility & contrast

On white

5.60

#3366BA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.75

#3366BA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3366BA

5.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3366BA	#FFFFFF	#000000	##FFFFFF
##3366BA	1.00	5.60	3.75	5.60
#FFFFFF	5.60	1.00	21.00	1.00
#000000	3.75	21.00	1.00	21.00
##FFFFFF	5.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B6EBD

Deuteranopia (green-blind)

#2062B8

Tritanopia (blue-blind)

#007A87

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #3366ba;
/* rgb */ color: rgb(51, 102, 186);
/* oklch */ color: oklch(52.0% 0.143 259.9);

Tailwind

colors: {
  custom: {
    50: '#7c91cf',
    500: '#3366ba',
    950: '#000000',
  },
}

SCSS

$custom: #3366ba;
$custom-light: #7c91cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3366ba",
  "rgb": {
    "r": 51,
    "g": 102,
    "b": 186
  },
  "hsl": {
    "h": 217.333,
    "s": 56.962,
    "l": 46.471
  },
  "oklch": {
    "l": 0.51987,
    "c": 0.14346,
    "h": 259.9
  },
  "luminance": 0.13752
}

Semantic roles & 50–950 ramp

primary

#3366BA

secondary

#C9AD80

accent

#A748E0

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C14

muted

#7C7D82

Preview Lab

Preview with #3366BA

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

Preview Lab → · Contrast checker → · Palette generator →