#3738CC#3738CC

#3738CC is a mid, highly saturated blue. Relative luminance 0.080; OKLCH L 45.1% C 0.220 H 272.9°. Best body text is #FFFFFF at 8.08:1 contrast (WCAG AA passes).

Color values

HEX#3738CC
RGBrgb(55, 56, 204)
HSLhsl(240, 59%, 51%)
HSVhsv(240, 73%, 80%)
CMYKcmyk(73%, 72.5%, 0%, 20%)
CIE-LABlab(33.98, 47.90, -75.89)
CIE-LCHlch(33.98, 89.74, 302.26°)
OKLaboklab(45.11% 0.0113 -0.2196)
OKLCHoklch(45.11% 0.22 272.9)
XYZxyz(13.8852, 7.9988, 57.9272)
Luminance0.0800 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3738CC #CCCB37
analogous
#3782CC #3738CC #8037CC
triadic
#3738CC #CC3738 #38CC37
tetradic
#3738CC #CC3782 #CCCB37 #37CC80
square
#3738CC #CC3782 #CCCB37 #37CC80
split-complementary
#3738CC #CC8037 #82CC37
monochromatic
#1C1C6D #28299E #3738CC #6869D8 #9999E5

Accessibility & contrast

On white

8.08
#3738CC on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.60
#3738CC on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3738CC
8.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3738CC#FFFFFF#000000##FFFFFF
##3738CC1.008.082.608.08
#FFFFFF8.081.0021.001.00
#0000002.6021.001.0021.00
##FFFFFF8.081.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0057D0
Deuteranopia (green-blind)
#0049C9
Tritanopia (blue-blind)
#00627F
Achromatopsia (no color)
#505050

Design tokens & code

CSS
--color: #3738cc;
/* rgb */ color: rgb(55, 56, 204);
/* oklch */ color: oklch(45.1% 0.220 272.9);
Tailwind
colors: {
  custom: {
    50: '#8470dd',
    500: '#3738cc',
    950: '#000000',
  },
}
SCSS
$custom: #3738cc;
$custom-light: #8470dd;
$custom-dark: #000000;
JSON
{
  "hex": "#3738cc",
  "rgb": {
    "r": 55,
    "g": 56,
    "b": 204
  },
  "hsl": {
    "h": 239.597,
    "s": 59.363,
    "l": 50.784
  },
  "oklch": {
    "l": 0.45112,
    "c": 0.21985,
    "h": 272.9
  },
  "luminance": 0.08
}

Semantic roles & 50–950 ramp

primary
#3738CC
secondary
#D0D08E
accent
#E145E3
background
#F9F6FD
surface
#F1ECFB
border
#CBC7D4
text
#0D0815
muted
#7E7B83

Preview Lab

Preview with #3738CC

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

Preview Lab → · Contrast checker → · Palette generator →

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