#3788B9#3788B9

#3788B9 is a mid, moderate cyan. Relative luminance 0.219; OKLCH L 59.9% C 0.108 H 238.9°. Best body text is #000000 at 5.38:1 contrast (WCAG AA passes).

Color values

HEX#3788B9
RGBrgb(55, 136, 185)
HSLhsl(203, 54%, 47%)
HSVhsv(203, 70%, 73%)
CMYKcmyk(70.3%, 26.5%, 0%, 27.5%)
CIE-LABlab(53.94, -8.44, -32.79)
CIE-LCHlch(53.94, 33.86, 255.56°)
OKLaboklab(59.9% -0.0557 -0.0924)
OKLCHoklch(59.9% 0.108 238.9)
XYZxyz(19.1333, 21.9212, 49.1124)
Luminance0.2192 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3788B9 #B96837
analogous
#37B9A9 #3788B9 #3747B9
triadic
#3788B9 #B93788 #88B937
tetradic
#3788B9 #A937B9 #B96837 #47B937
square
#3788B9 #A937B9 #B96837 #47B937
split-complementary
#3788B9 #B93747 #B9A937
monochromatic
#1B435B #29658A #3788B9 #5EA5CF #8DBFDD

Accessibility & contrast

On white

3.90
#3788B9 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.38
#3788B9 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3788B9
5.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3788B9#FFFFFF#000000##000000
##3788B91.003.905.385.38
#FFFFFF3.901.0021.0021.00
#0000005.3821.001.001.00
##0000005.3821.001.001.00

Color blindness preview

Protanopia (red-blind)
#7188BB
Deuteranopia (green-blind)
#5F7BB8
Tritanopia (blue-blind)
#009499
Achromatopsia (no color)
#818181

Design tokens & code

CSS
--color: #3788b9;
/* rgb */ color: rgb(55, 136, 185);
/* oklch */ color: oklch(59.9% 0.108 238.9);
Tailwind
colors: {
  custom: {
    50: '#7daace',
    500: '#3788b9',
    950: '#000000',
  },
}
SCSS
$custom: #3788b9;
$custom-light: #7daace;
$custom-dark: #000000;
JSON
{
  "hex": "#3788b9",
  "rgb": {
    "r": 55,
    "g": 136,
    "b": 185
  },
  "hsl": {
    "h": 202.615,
    "s": 54.167,
    "l": 47.059
  },
  "oklch": {
    "l": 0.59895,
    "c": 0.10788,
    "h": 238.9
  },
  "luminance": 0.21923
}

Semantic roles & 50–950 ramp

primary
#3788B9
secondary
#C89E84
accent
#824ADE
background
#F8FAFC
surface
#EFF4F9
border
#CACED2
text
#0B1013
muted
#7C7F82

Preview Lab

Preview with #3788B9

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

Preview Lab → · Contrast checker → · Palette generator →

#3788B9 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva