#3733B8#3733B8

#3733B8 is a dark, highly saturated blue. Relative luminance 0.066; OKLCH L 42.4% C 0.201 H 274.9°. Best body text is #FFFFFF at 9.02:1 contrast (WCAG AA passes).

Color values

HEX#3733B8
RGBrgb(55, 51, 184)
HSLhsl(242, 57%, 46%)
HSVhsv(242, 72%, 72%)
CMYKcmyk(70.1%, 72.3%, 0%, 27.8%)
CIE-LABlab(30.97, 44.18, -69.11)
CIE-LCHlch(30.97, 82.02, 302.59°)
OKLaboklab(42.37% 0.0173 -0.1998)
OKLCHoklch(42.37% 0.201 274.9)
XYZxyz(11.4082, 6.6395, 46.0184)
Luminance0.0664 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3733B8 #B4B833
analogous
#3371B8 #3733B8 #7933B8
triadic
#3733B8 #B83733 #33B837
tetradic
#3733B8 #B83371 #B4B833 #33B879
square
#3733B8 #B83371 #B4B833 #33B879
split-complementary
#3733B8 #B87933 #71B833
monochromatic
#1A1858 #292688 #3733B8 #5B58D1 #8A88DE

Accessibility & contrast

On white

9.02
#3733B8 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.33
#3733B8 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3733B8
9.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3733B8#FFFFFF#000000##FFFFFF
##3733B81.009.022.339.02
#FFFFFF9.021.0021.001.00
#0000002.3321.001.0021.00
##FFFFFF9.021.0021.001.00

Color blindness preview

Protanopia (red-blind)
#004FBC
Deuteranopia (green-blind)
#0043B6
Tritanopia (blue-blind)
#005872
Achromatopsia (no color)
#494949

Design tokens & code

CSS
--color: #3733b8;
/* rgb */ color: rgb(55, 51, 184);
/* oklch */ color: oklch(42.4% 0.201 274.9);
Tailwind
colors: {
  custom: {
    50: '#806ccf',
    500: '#3733b8',
    950: '#000000',
  },
}
SCSS
$custom: #3733b8;
$custom-light: #806ccf;
$custom-dark: #000000;
JSON
{
  "hex": "#3733b8",
  "rgb": {
    "r": 55,
    "g": 51,
    "b": 184
  },
  "hsl": {
    "h": 241.805,
    "s": 56.596,
    "l": 46.078
  },
  "oklch": {
    "l": 0.42371,
    "c": 0.20052,
    "h": 274.9
  },
  "luminance": 0.06641
}

Semantic roles & 50–950 ramp

primary
#3733B8
secondary
#C6C87F
accent
#E048DB
background
#F8F6FC
surface
#F0EBF9
border
#CBC6D2
text
#0C0714
muted
#7D7A82

Preview Lab

Preview with #3733B8

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

Preview Lab → · Contrast checker → · Palette generator →

#3733B8 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva