#3733D4#3733D4

#3733D4 is a mid, highly saturated blue. Relative luminance 0.079; OKLCH L 45.3% C 0.234 H 272.9°. Best body text is #FFFFFF at 8.12:1 contrast (WCAG AA passes).

Color values

HEX#3733D4
RGBrgb(55, 51, 212)
HSLhsl(241, 65%, 52%)
HSVhsv(241, 76%, 83%)
CMYKcmyk(74.1%, 75.9%, 0%, 16.9%)
CIE-LABlab(33.84, 53.19, -80.76)
CIE-LCHlch(33.84, 96.70, 303.37°)
OKLaboklab(45.26% 0.012 -0.2337)
OKLCHoklch(45.26% 0.234 272.9)
XYZxyz(14.6391, 7.9318, 63.0341)
Luminance0.0793 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3733D4 #D0D433
analogous
#3380D4 #3733D4 #8833D4
triadic
#3733D4 #D43733 #33D437
tetradic
#3733D4 #D43380 #D0D433 #33D488
square
#3733D4 #D43380 #D0D433 #33D488
split-complementary
#3733D4 #D48833 #80D433
monochromatic
#1B1874 #2623A7 #3733D4 #6966DF #9A98E9

Accessibility & contrast

On white

8.12
#3733D4 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.59
#3733D4 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3733D4
8.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3733D4#FFFFFF#000000##FFFFFF
##3733D41.008.122.598.12
#FFFFFF8.121.0021.001.00
#0000002.5921.001.0021.00
##FFFFFF8.121.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0057D9
Deuteranopia (green-blind)
#0048D1
Tritanopia (blue-blind)
#006382
Achromatopsia (no color)
#505050

Design tokens & code

CSS
--color: #3733d4;
/* rgb */ color: rgb(55, 51, 212);
/* oklch */ color: oklch(45.3% 0.234 272.9);
Tailwind
colors: {
  custom: {
    50: '#876de3',
    500: '#3733d4',
    950: '#000000',
  },
}
SCSS
$custom: #3733d4;
$custom-light: #876de3;
$custom-dark: #000000;
JSON
{
  "hex": "#3733d4",
  "rgb": {
    "r": 55,
    "g": 51,
    "b": 212
  },
  "hsl": {
    "h": 241.491,
    "s": 65.182,
    "l": 51.569
  },
  "oklch": {
    "l": 0.45257,
    "c": 0.234,
    "h": 272.9
  },
  "luminance": 0.07933
}

Semantic roles & 50–950 ramp

primary
#3733D4
secondary
#D3D58E
accent
#E840E4
background
#F9F6FE
surface
#F1ECFC
border
#CBC7D5
text
#0D0716
muted
#7E7A84

Preview Lab

Preview with #3733D4

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

Preview Lab → · Contrast checker → · Palette generator →

#3733D4 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva