#3355BB#3355BB

#3355BB is a mid, vivid blue. Relative luminance 0.108; OKLCH L 48.5% C 0.166 H 266.3°. Best body text is #FFFFFF at 6.65:1 contrast (WCAG AA passes).

Color values

HEX	#3355BB
RGB	rgb(51, 85, 187)
HSL	hsl(225, 57%, 47%)
HSV	hsv(225, 73%, 73%)
CMYK	cmyk(72.7%, 54.5%, 0%, 26.7%)
CIE-LAB	lab(39.22, 23.38, -57.40)
CIE-LCH	lch(39.22, 61.98, 292.16°)
OKLab	oklab(48.46% -0.0107 -0.1653)
OKLCH	oklch(48.46% 0.166 266.3)
XYZ	xyz(13.5802, 10.7872, 48.3705)
Luminance	0.1079 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3355BB #BB9933

analogous

#3399BB #3355BB #5533BB

triadic

#3355BB #BB3355 #55BB33

tetradic

#3355BB #BB3399 #BB9933 #33BB55

square

#3355BB #BB3399 #BB9933 #33BB55

split-complementary

#3355BB #BB5533 #99BB33

monochromatic

#19295B #263F8B #3355BB #5977D2 #899FDF

Accessibility & contrast

On white

6.65

#3355BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.16

#3355BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3355BB

6.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3355BB	#FFFFFF	#000000	##FFFFFF
##3355BB	1.00	6.65	3.16	6.65
#FFFFFF	6.65	1.00	21.00	1.00
#000000	3.16	21.00	1.00	21.00
##FFFFFF	6.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0063BF

Deuteranopia (green-blind)

#0056B9

Tritanopia (blue-blind)

#006E7F

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3355bb;
/* rgb */ color: rgb(51, 85, 187);
/* oklch */ color: oklch(48.5% 0.166 266.3);

Tailwind

colors: {
  custom: {
    50: '#7d84d0',
    500: '#3355bb',
    950: '#000000',
  },
}

SCSS

$custom: #3355bb;
$custom-light: #7d84d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3355bb",
  "rgb": {
    "r": 51,
    "g": 85,
    "b": 187
  },
  "hsl": {
    "h": 225,
    "s": 57.143,
    "l": 46.667
  },
  "oklch": {
    "l": 0.48458,
    "c": 0.16564,
    "h": 266.3
  },
  "luminance": 0.10789
}

Semantic roles & 50–950 ramp

primary

#3355BB

secondary

#C9B781

accent

#BA47E0

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0A14

muted

#7C7C82

Preview Lab

Preview with #3355BB

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

Preview Lab → · Contrast checker → · Palette generator →