#3787BE#3787BE

#3787BE is a mid, moderate cyan. Relative luminance 0.219; OKLCH L 59.9% C 0.114 H 242.3°. Best body text is #000000 at 5.37:1 contrast (WCAG AA passes).

Color values

HEX#3787BE
RGBrgb(55, 135, 190)
HSLhsl(204, 55%, 48%)
HSVhsv(204, 71%, 75%)
CMYKcmyk(71.1%, 28.9%, 0%, 25.5%)
CIE-LABlab(53.87, -6.13, -35.75)
CIE-LCHlch(53.87, 36.28, 260.27°)
OKLaboklab(59.92% -0.053 -0.101)
OKLCHoklch(59.92% 0.114 242.3)
XYZxyz(19.5302, 21.8557, 51.8945)
Luminance0.2186 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3787BE #BE6E37
analogous
#37BEB1 #3787BE #3744BE
triadic
#3787BE #BE3787 #87BE37
tetradic
#3787BE #B137BE #BE6E37 #44BE37
square
#3787BE #B137BE #BE6E37 #44BE37
split-complementary
#3787BE #BE3744 #BEB137
monochromatic
#1C445F #29658F #3787BE #61A3D1 #90BFDF

Accessibility & contrast

On white

3.91
#3787BE on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.37
#3787BE on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3787BE
5.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3787BE#FFFFFF#000000##000000
##3787BE1.003.915.375.37
#FFFFFF3.911.0021.0021.00
#0000005.3721.001.001.00
##0000005.3721.001.001.00

Color blindness preview

Protanopia (red-blind)
#6E88C0
Deuteranopia (green-blind)
#5B7BBD
Tritanopia (blue-blind)
#00959A
Achromatopsia (no color)
#818181

Design tokens & code

CSS
--color: #3787be;
/* rgb */ color: rgb(55, 135, 190);
/* oklch */ color: oklch(59.9% 0.114 242.3);
Tailwind
colors: {
  custom: {
    50: '#7ea9d2',
    500: '#3787be',
    950: '#000000',
  },
}
SCSS
$custom: #3787be;
$custom-light: #7ea9d2;
$custom-dark: #000000;
JSON
{
  "hex": "#3787be",
  "rgb": {
    "r": 55,
    "g": 135,
    "b": 190
  },
  "hsl": {
    "h": 204.444,
    "s": 55.102,
    "l": 48.039
  },
  "oklch": {
    "l": 0.59915,
    "c": 0.1141,
    "h": 242.3
  },
  "luminance": 0.21858
}

Semantic roles & 50–950 ramp

primary
#3787BE
secondary
#CAA287
accent
#8649DE
background
#F8FAFC
surface
#EFF4F9
border
#CACED2
text
#0B0F14
muted
#7C7F82

Preview Lab

Preview with #3787BE

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

Preview Lab → · Contrast checker → · Palette generator →

#3787BE Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva