#3738CA#3738CA

#3738CA is a dark, highly saturated blue. Relative luminance 0.079; OKLCH L 44.9% C 0.217 H 273.1°. Best body text is #FFFFFF at 8.14:1 contrast (WCAG AA passes).

Color values

HEX#3738CA
RGBrgb(55, 56, 202)
HSLhsl(240, 58%, 50%)
HSVhsv(240, 73%, 79%)
CMYKcmyk(72.8%, 72.3%, 0%, 20.8%)
CIE-LABlab(33.78, 47.25, -75.05)
CIE-LCHlch(33.78, 88.68, 302.19°)
OKLaboklab(44.91% 0.0116 -0.2171)
OKLCHoklch(44.91% 0.217 273.1)
XYZxyz(13.6468, 7.9035, 56.6720)
Luminance0.0790 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3738CA #CAC937
analogous
#3781CA #3738CA #7F37CA
triadic
#3738CA #CA3738 #38CA37
tetradic
#3738CA #CA3781 #CAC937 #37CA7F
square
#3738CA #CA3781 #CAC937 #37CA7F
split-complementary
#3738CA #CA7F37 #81CA37
monochromatic
#1C1D6A #292A9B #3738CA #6768D7 #9898E4

Accessibility & contrast

On white

8.14
#3738CA on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.58
#3738CA on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3738CA
8.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3738CA#FFFFFF#000000##FFFFFF
##3738CA1.008.142.588.14
#FFFFFF8.141.0021.001.00
#0000002.5821.001.0021.00
##FFFFFF8.141.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0056CE
Deuteranopia (green-blind)
#0048C7
Tritanopia (blue-blind)
#00627E
Achromatopsia (no color)
#4F4F4F

Design tokens & code

CSS
--color: #3738ca;
/* rgb */ color: rgb(55, 56, 202);
/* oklch */ color: oklch(44.9% 0.217 273.1);
Tailwind
colors: {
  custom: {
    50: '#8470db',
    500: '#3738ca',
    950: '#000000',
  },
}
SCSS
$custom: #3738ca;
$custom-light: #8470db;
$custom-dark: #000000;
JSON
{
  "hex": "#3738ca",
  "rgb": {
    "r": 55,
    "g": 56,
    "b": 202
  },
  "hsl": {
    "h": 239.592,
    "s": 58.103,
    "l": 50.392
  },
  "oklch": {
    "l": 0.4491,
    "c": 0.21744,
    "h": 273.1
  },
  "luminance": 0.07905
}

Semantic roles & 50–950 ramp

primary
#3738CA
secondary
#CFCF8E
accent
#E046E1
background
#F8F6FD
surface
#F0ECFB
border
#CBC7D4
text
#0D0715
muted
#7D7A83

Preview Lab

Preview with #3738CA

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

Preview Lab → · Contrast checker → · Palette generator →

#3738CA Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva