#3366CC#3366CC

#3366CC is a mid, vivid blue. Relative luminance 0.146; OKLCH L 53.2% C 0.168 H 262.3°. Best body text is #FFFFFF at 5.37:1 contrast (WCAG AA passes).

Color values

HEX	#3366CC
RGB	rgb(51, 102, 204)
HSL	hsl(220, 60%, 50%)
HSV	hsv(220, 75%, 80%)
CMYK	cmyk(75%, 50%, 0%, 20%)
CIE-LAB	lab(45.03, 18.71, -57.85)
CIE-LCH	lch(45.03, 60.80, 287.92°)
OKLab	oklab(53.25% -0.0225 -0.1663)
OKLCH	oklch(53.25% 0.168 262.3)
XYZ	xyz(17.0118, 14.5643, 59.0296)
Luminance	0.1457 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3366CC #CC9933

analogous

#33B2CC #3366CC #4C33CC

triadic

#3366CC #CC3366 #66CC33

tetradic

#3366CC #CC33B2 #CC9933 #33CC4D

square

#3366CC #CC33B2 #CC9933 #33CC4D

split-complementary

#3366CC #CC4C33 #B2CC33

monochromatic

#1B356A #274E9B #3366CC #648BD8 #95AFE4

Accessibility & contrast

On white

5.37

#3366CC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.91

#3366CC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3366CC

5.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3366CC	#FFFFFF	#000000	##FFFFFF
##3366CC	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)

#2872D0

Deuteranopia (green-blind)

#0064CA

Tritanopia (blue-blind)

#007E8F

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #3366cc;
/* rgb */ color: rgb(51, 102, 204);
/* oklch */ color: oklch(53.2% 0.168 262.3);

Tailwind

colors: {
  custom: {
    50: '#8091dc',
    500: '#3366cc',
    950: '#000000',
  },
}

SCSS

$custom: #3366cc;
$custom-light: #8091dc;
$custom-dark: #000000;

JSON

{
  "hex": "#3366cc",
  "rgb": {
    "r": 51,
    "g": 102,
    "b": 204
  },
  "hsl": {
    "h": 220,
    "s": 60,
    "l": 50
  },
  "oklch": {
    "l": 0.53248,
    "c": 0.16787,
    "h": 262.3
  },
  "luminance": 0.14566
}

Semantic roles & 50–950 ramp

primary

#3366CC

secondary

#D0B98B

accent

#AE45E3

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3366CC

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

Preview Lab → · Contrast checker → · Palette generator →