#3748A2#3748A2

#3748A2 is a dark, vivid blue. Relative luminance 0.081; OKLCH L 44.1% C 0.146 H 271.1°. Best body text is #FFFFFF at 8.04:1 contrast (WCAG AA passes).

Color values

HEX#3748A2
RGBrgb(55, 72, 162)
HSLhsl(230, 49%, 43%)
HSVhsv(230, 66%, 64%)
CMYKcmyk(66%, 55.6%, 0%, 36.5%)
CIE-LABlab(34.10, 23.31, -50.87)
CIE-LCHlch(34.10, 55.95, 294.62°)
OKLaboklab(44.08% 0.0028 -0.1462)
OKLCHoklch(44.08% 0.146 271.1)
XYZxyz(10.4123, 8.0547, 35.1814)
Luminance0.0806 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3748A2 #A29137
analogous
#377EA2 #3748A2 #5B37A2
triadic
#3748A2 #A23748 #48A237
tetradic
#3748A2 #A2377E #A29137 #37A25B
square
#3748A2 #A2377E #A29137 #37A25B
split-complementary
#3748A2 #A25B37 #7EA237
monochromatic
#181F47 #273474 #3748A2 #5264C4 #808DD4

Accessibility & contrast

On white

8.04
#3748A2 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.61
#3748A2 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3748A2
8.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3748A2#FFFFFF#000000##FFFFFF
##3748A21.008.042.618.04
#FFFFFF8.041.0021.001.00
#0000002.6121.001.0021.00
##FFFFFF8.041.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0055A5
Deuteranopia (green-blind)
#004CA0
Tritanopia (blue-blind)
#005D6E
Achromatopsia (no color)
#505050

Design tokens & code

CSS
--color: #3748a2;
/* rgb */ color: rgb(55, 72, 162);
/* oklch */ color: oklch(44.1% 0.146 271.1);
Tailwind
colors: {
  custom: {
    50: '#7a7abe',
    500: '#3748a2',
    950: '#000000',
  },
}
SCSS
$custom: #3748a2;
$custom-light: #7a7abe;
$custom-dark: #000000;
JSON
{
  "hex": "#3748a2",
  "rgb": {
    "r": 55,
    "g": 72,
    "b": 162
  },
  "hsl": {
    "h": 230.467,
    "s": 49.309,
    "l": 42.549
  },
  "oklch": {
    "l": 0.44077,
    "c": 0.14622,
    "h": 271.1
  },
  "luminance": 0.08056
}

Semantic roles & 50–950 ramp

primary
#3748A2
secondary
#BDB278
accent
#C34FD9
background
#F7F7FB
surface
#EEEDF7
border
#C9C8D0
text
#0A0912
muted
#7C7B81

Preview Lab

Preview with #3748A2

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

Preview Lab → · Contrast checker → · Palette generator →

#3748A2 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva