#3366BD#3366BD

#3366BD is a mid, vivid blue. Relative luminance 0.139; OKLCH L 52.2% C 0.148 H 260.4°. Best body text is #FFFFFF at 5.56:1 contrast (WCAG AA passes).

Color values

HEX	#3366BD
RGB	rgb(51, 102, 189)
HSL	hsl(218, 58%, 47%)
HSV	hsv(218, 73%, 74%)
CMYK	cmyk(73%, 46%, 0%, 25.9%)
CIE-LAB	lab(44.06, 13.11, -50.76)
CIE-LCH	lch(44.06, 52.42, 284.48°)
OKLab	oklab(52.19% -0.0247 -0.1455)
OKLCH	oklch(52.19% 0.148 260.4)
XYZ	xyz(15.2986, 13.8790, 50.0069)
Luminance	0.1388 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3366BD #BD8A33

analogous

#33ABBD #3366BD #4533BD

triadic

#3366BD #BD3366 #66BD33

tetradic

#3366BD #BD33AB #BD8A33 #33BD45

square

#3366BD #BD33AB #BD8A33 #33BD45

split-complementary

#3366BD #BD4533 #ABBD33

monochromatic

#19325D #264C8D #3366BD #5B87D3 #8BAAE0

Accessibility & contrast

On white

5.56

#3366BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.78

#3366BD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3366BD

5.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3366BD	#FFFFFF	#000000	##FFFFFF
##3366BD	1.00	5.56	3.78	5.56
#FFFFFF	5.56	1.00	21.00	1.00
#000000	3.78	21.00	1.00	21.00
##FFFFFF	5.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#396FC0

Deuteranopia (green-blind)

#1A62BB

Tritanopia (blue-blind)

#007A88

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #3366bd;
/* rgb */ color: rgb(51, 102, 189);
/* oklch */ color: oklch(52.2% 0.148 260.4);

Tailwind

colors: {
  custom: {
    50: '#7c91d1',
    500: '#3366bd',
    950: '#000000',
  },
}

SCSS

$custom: #3366bd;
$custom-light: #7c91d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3366bd",
  "rgb": {
    "r": 51,
    "g": 102,
    "b": 189
  },
  "hsl": {
    "h": 217.826,
    "s": 57.5,
    "l": 47.059
  },
  "oklch": {
    "l": 0.52191,
    "c": 0.14756,
    "h": 260.4
  },
  "luminance": 0.13881
}

Semantic roles & 50–950 ramp

primary

#3366BD

secondary

#CAAF82

accent

#A847E1

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C14

muted

#7C7D82

Preview Lab

Preview with #3366BD

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

Preview Lab → · Contrast checker → · Palette generator →