#3768B9#3768B9

#3768B9 is a mid, vivid blue. Relative luminance 0.142; OKLCH L 52.5% C 0.138 H 259.9°. Best body text is #FFFFFF at 5.46:1 contrast (WCAG AA passes).

Color values

HEX#3768B9
RGBrgb(55, 104, 185)
HSLhsl(217, 54%, 47%)
HSVhsv(217, 70%, 73%)
CMYKcmyk(70.3%, 43.8%, 0%, 27.5%)
CIE-LABlab(44.54, 10.93, -47.66)
CIE-LCHlch(44.54, 48.89, 282.92°)
OKLaboklab(52.53% -0.0243 -0.1362)
OKLCHoklch(52.53% 0.138 259.9)
XYZxyz(15.2797, 14.2140, 47.8279)
Luminance0.1422 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3768B9 #B98837
analogous
#37A9B9 #3768B9 #4737B9
triadic
#3768B9 #B93768 #68B937
tetradic
#3768B9 #B937A9 #B98837 #37B947
square
#3768B9 #B937A9 #B98837 #37B947
split-complementary
#3768B9 #B94737 #A9B937
monochromatic
#1B335B #294D8A #3768B9 #5E89CF #8DABDD

Accessibility & contrast

On white

5.46
#3768B9 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.84
#3768B9 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3768B9
5.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3768B9#FFFFFF#000000##FFFFFF
##3768B91.005.463.845.46
#FFFFFF5.461.0021.001.00
#0000003.8421.001.0021.00
##FFFFFF5.461.0021.001.00

Color blindness preview

Protanopia (red-blind)
#4170BC
Deuteranopia (green-blind)
#2964B7
Tritanopia (blue-blind)
#007B87
Achromatopsia (no color)
#696969

Design tokens & code

CSS
--color: #3768b9;
/* rgb */ color: rgb(55, 104, 185);
/* oklch */ color: oklch(52.5% 0.138 259.9);
Tailwind
colors: {
  custom: {
    50: '#7d92ce',
    500: '#3768b9',
    950: '#000000',
  },
}
SCSS
$custom: #3768b9;
$custom-light: #7d92ce;
$custom-dark: #000000;
JSON
{
  "hex": "#3768b9",
  "rgb": {
    "r": 55,
    "g": 104,
    "b": 185
  },
  "hsl": {
    "h": 217.385,
    "s": 54.167,
    "l": 47.059
  },
  "oklch": {
    "l": 0.52525,
    "c": 0.13839,
    "h": 259.9
  },
  "luminance": 0.14216
}

Semantic roles & 50–950 ramp

primary
#3768B9
secondary
#C8AE84
accent
#A64ADE
background
#F8F8FC
surface
#EFF0F9
border
#CACBD2
text
#0B0D14
muted
#7C7D82

Preview Lab

Preview with #3768B9

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

Preview Lab → · Contrast checker → · Palette generator →

#3768B9 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva