#3555B9#3555B9

#3555B9 is a mid, vivid blue. Relative luminance 0.108; OKLCH L 48.4% C 0.162 H 266.8°. Best body text is #FFFFFF at 6.66:1 contrast (WCAG AA passes).

Color values

HEX#3555B9
RGBrgb(53, 85, 185)
HSLhsl(225, 55%, 47%)
HSVhsv(225, 71%, 73%)
CMYKcmyk(71.4%, 54.1%, 0%, 27.5%)
CIE-LABlab(39.17, 22.91, -56.31)
CIE-LCHlch(39.17, 60.79, 292.14°)
OKLaboklab(48.4% -0.0091 -0.1621)
OKLCHoklch(48.4% 0.162 266.8)
XYZxyz(13.4706, 10.7553, 47.2556)
Luminance0.1076 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3555B9 #B99935
analogous
#3597B9 #3555B9 #5735B9
triadic
#3555B9 #B93555 #55B935
tetradic
#3555B9 #B93597 #B99935 #35B957
square
#3555B9 #B93597 #B99935 #35B957
split-complementary
#3555B9 #B95735 #97B935
monochromatic
#1A295A #273F89 #3555B9 #5B77D0 #8B9FDE

Accessibility & contrast

On white

6.66
#3555B9 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.15
#3555B9 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3555B9
6.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3555B9#FFFFFF#000000##FFFFFF
##3555B91.006.663.156.66
#FFFFFF6.661.0021.001.00
#0000003.1521.001.0021.00
##FFFFFF6.661.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0563BC
Deuteranopia (green-blind)
#0056B7
Tritanopia (blue-blind)
#006D7E
Achromatopsia (no color)
#5C5C5C

Design tokens & code

CSS
--color: #3555b9;
/* rgb */ color: rgb(53, 85, 185);
/* oklch */ color: oklch(48.4% 0.162 266.8);
Tailwind
colors: {
  custom: {
    50: '#7d84cf',
    500: '#3555b9',
    950: '#000000',
  },
}
SCSS
$custom: #3555b9;
$custom-light: #7d84cf;
$custom-dark: #000000;
JSON
{
  "hex": "#3555b9",
  "rgb": {
    "r": 53,
    "g": 85,
    "b": 185
  },
  "hsl": {
    "h": 225.455,
    "s": 55.462,
    "l": 46.667
  },
  "oklch": {
    "l": 0.48396,
    "c": 0.16232,
    "h": 266.8
  },
  "luminance": 0.10757
}

Semantic roles & 50–950 ramp

primary
#3555B9
secondary
#C8B782
accent
#BA49DF
background
#F8F8FC
surface
#EFEFF9
border
#CACAD2
text
#0B0A14
muted
#7C7C82

Preview Lab

Preview with #3555B9

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

Preview Lab → · Contrast checker → · Palette generator →

#3555B9 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva