#3738C0#3738C0

#3738C0 is a dark, highly saturated blue. Relative luminance 0.074; OKLCH L 43.9% C 0.205 H 273.7°. Best body text is #FFFFFF at 8.44:1 contrast (WCAG AA passes).

Color values

HEX#3738C0
RGBrgb(55, 56, 192)
HSLhsl(240, 55%, 48%)
HSVhsv(240, 71%, 75%)
CMYKcmyk(71.4%, 70.8%, 0%, 24.7%)
CIE-LABlab(32.80, 43.93, -70.82)
CIE-LCHlch(32.80, 83.34, 301.82°)
OKLaboklab(43.91% 0.0132 -0.2048)
OKLCHoklch(43.91% 0.205 273.7)
XYZxyz(12.5010, 7.4451, 50.6372)
Luminance0.0745 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3738C0 #C0BF37
analogous
#377CC0 #3738C0 #7A37C0
triadic
#3738C0 #C03738 #38C037
tetradic
#3738C0 #C0377C #C0BF37 #37C07A
square
#3738C0 #C0377C #C0BF37 #37C07A
split-complementary
#3738C0 #C07A37 #7CC037
monochromatic
#1C1C61 #292A90 #3738C0 #6263D2 #9292E0

Accessibility & contrast

On white

8.44
#3738C0 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.49
#3738C0 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3738C0
8.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3738C0#FFFFFF#000000##FFFFFF
##3738C01.008.442.498.44
#FFFFFF8.441.0021.001.00
#0000002.4921.001.0021.00
##FFFFFF8.441.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0054C4
Deuteranopia (green-blind)
#0047BE
Tritanopia (blue-blind)
#005E78
Achromatopsia (no color)
#4D4D4D

Design tokens & code

CSS
--color: #3738c0;
/* rgb */ color: rgb(55, 56, 192);
/* oklch */ color: oklch(43.9% 0.205 273.7);
Tailwind
colors: {
  custom: {
    50: '#8270d4',
    500: '#3738c0',
    950: '#000000',
  },
}
SCSS
$custom: #3738c0;
$custom-light: #8270d4;
$custom-dark: #000000;
JSON
{
  "hex": "#3738c0",
  "rgb": {
    "r": 55,
    "g": 56,
    "b": 192
  },
  "hsl": {
    "h": 239.562,
    "s": 55.466,
    "l": 48.431
  },
  "oklch": {
    "l": 0.43914,
    "c": 0.2052,
    "h": 273.7
  },
  "luminance": 0.07446
}

Semantic roles & 50–950 ramp

primary
#3738C0
secondary
#CBCA88
accent
#DE49DF
background
#F8F6FD
surface
#F0ECFA
border
#CBC7D3
text
#0C0714
muted
#7D7A83

Preview Lab

Preview with #3738C0

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

Preview Lab → · Contrast checker → · Palette generator →

#3738C0 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva