#3366D2#3366D2

#3366D2 is a mid, vivid blue. Relative luminance 0.149; OKLCH L 53.7% C 0.176 H 262.9°. Best body text is #FFFFFF at 5.29:1 contrast (WCAG AA passes).

Color values

HEX	#3366D2
RGB	rgb(51, 102, 210)
HSL	hsl(221, 64%, 51%)
HSV	hsv(221, 76%, 82%)
CMYK	cmyk(75.7%, 51.4%, 0%, 17.6%)
CIE-LAB	lab(45.44, 20.95, -60.63)
CIE-LCH	lch(45.44, 64.15, 289.06°)
OKLab	oklab(53.69% -0.0218 -0.1745)
OKLCH	oklch(53.69% 0.176 262.9)
XYZ	xyz(17.7453, 14.8577, 62.8929)
Luminance	0.1486 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3366D2 #D29F33

analogous

#33B5D2 #3366D2 #4F33D2

triadic

#3366D2 #D23366 #66D233

tetradic

#3366D2 #D233B5 #D29F33 #33D24F

square

#3366D2 #D233B5 #D29F33 #33D24F

split-complementary

#3366D2 #D24F33 #B5D233

monochromatic

#193572 #244DA4 #3366D2 #658CDD #97B1E8

Accessibility & contrast

On white

5.29

#3366D2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.97

#3366D2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3366D2

5.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3366D2	#FFFFFF	#000000	##FFFFFF
##3366D2	1.00	5.29	3.97	5.29
#FFFFFF	5.29	1.00	21.00	1.00
#000000	3.97	21.00	1.00	21.00
##FFFFFF	5.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E73D6

Deuteranopia (green-blind)

#0065D0

Tritanopia (blue-blind)

#008092

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #3366d2;
/* rgb */ color: rgb(51, 102, 210);
/* oklch */ color: oklch(53.7% 0.176 262.9);

Tailwind

colors: {
  custom: {
    50: '#8191e0',
    500: '#3366d2',
    950: '#000000',
  },
}

SCSS

$custom: #3366d2;
$custom-light: #8191e0;
$custom-dark: #000000;

JSON

{
  "hex": "#3366d2",
  "rgb": {
    "r": 51,
    "g": 102,
    "b": 210
  },
  "hsl": {
    "h": 220.755,
    "s": 63.855,
    "l": 51.176
  },
  "oklch": {
    "l": 0.53688,
    "c": 0.17589,
    "h": 262.9
  },
  "luminance": 0.1486
}

Semantic roles & 50–950 ramp

primary

#3366D2

secondary

#D4BD8D

accent

#B241E7

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3366D2

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

Preview Lab → · Contrast checker → · Palette generator →