#3789BE#3789BE

#3789BE is a mid, moderate cyan. Relative luminance 0.224; OKLCH L 60.4% C 0.113 H 240.8°. Best body text is #000000 at 5.48:1 contrast (WCAG AA passes).

Color values

HEX#3789BE
RGBrgb(55, 137, 190)
HSLhsl(204, 55%, 48%)
HSVhsv(204, 71%, 75%)
CMYKcmyk(71.1%, 27.9%, 0%, 25.5%)
CIE-LABlab(54.47, -7.28, -34.82)
CIE-LCHlch(54.47, 35.58, 258.18°)
OKLaboklab(60.39% -0.055 -0.0983)
OKLCHoklch(60.39% 0.113 240.8)
XYZxyz(19.8119, 22.4190, 51.9884)
Luminance0.2242 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3789BE #BE6C37
analogous
#37BEB0 #3789BE #3745BE
triadic
#3789BE #BE3789 #89BE37
tetradic
#3789BE #B037BE #BE6C37 #45BE37
square
#3789BE #B037BE #BE6C37 #45BE37
split-complementary
#3789BE #BE3745 #BEB037
monochromatic
#1C455F #29678F #3789BE #61A5D1 #90C0DF

Accessibility & contrast

On white

3.83
#3789BE on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.48
#3789BE on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3789BE
5.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3789BE#FFFFFF#000000##000000
##3789BE1.003.835.485.48
#FFFFFF3.831.0021.0021.00
#0000005.4821.001.001.00
##0000005.4821.001.001.00

Color blindness preview

Protanopia (red-blind)
#718AC0
Deuteranopia (green-blind)
#5E7DBD
Tritanopia (blue-blind)
#00969B
Achromatopsia (no color)
#828282

Design tokens & code

CSS
--color: #3789be;
/* rgb */ color: rgb(55, 137, 190);
/* oklch */ color: oklch(60.4% 0.113 240.8);
Tailwind
colors: {
  custom: {
    50: '#7eabd2',
    500: '#3789be',
    950: '#000000',
  },
}
SCSS
$custom: #3789be;
$custom-light: #7eabd2;
$custom-dark: #000000;
JSON
{
  "hex": "#3789be",
  "rgb": {
    "r": 55,
    "g": 137,
    "b": 190
  },
  "hsl": {
    "h": 203.556,
    "s": 55.102,
    "l": 48.039
  },
  "oklch": {
    "l": 0.60386,
    "c": 0.11264,
    "h": 240.8
  },
  "luminance": 0.22421
}

Semantic roles & 50–950 ramp

primary
#3789BE
secondary
#CAA187
accent
#8449DE
background
#F8FAFC
surface
#EFF4F9
border
#CACED2
text
#0B1014
muted
#7C7F82

Preview Lab

Preview with #3789BE

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

Preview Lab → · Contrast checker → · Palette generator →

#3789BE Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva