#3791CA#3791CA

#3791CA is a light, vivid cyan. Relative luminance 0.253; OKLCH L 62.9% C 0.120 H 240.6°. Best body text is #000000 at 6.07:1 contrast (WCAG AA passes).

Color values

HEX#3791CA
RGBrgb(55, 145, 202)
HSLhsl(203, 58%, 50%)
HSVhsv(203, 73%, 79%)
CMYKcmyk(72.8%, 28.2%, 0%, 20.8%)
CIE-LABlab(57.39, -7.69, -37.05)
CIE-LCHlch(57.39, 37.84, 258.27°)
OKLaboklab(62.88% -0.059 -0.1047)
OKLCHoklch(62.88% 0.12 240.6)
XYZxyz(22.3575, 25.3247, 59.5755)
Luminance0.2533 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3791CA #CA7037
analogous
#37CAB9 #3791CA #3747CA
triadic
#3791CA #CA3791 #91CA37
tetradic
#3791CA #B937CA #CA7037 #47CA37
square
#3791CA #B937CA #CA7037 #47CA37
split-complementary
#3791CA #CA3747 #CAB937
monochromatic
#1C4C6A #296F9B #3791CA #67ACD7 #98C6E4

Accessibility & contrast

On white

3.46
#3791CA on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

6.07
#3791CA on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3791CA
6.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3791CA#FFFFFF#000000##000000
##3791CA1.003.466.076.07
#FFFFFF3.461.0021.0021.00
#0000006.0721.001.001.00
##0000006.0721.001.001.00

Color blindness preview

Protanopia (red-blind)
#7792CD
Deuteranopia (green-blind)
#6284C9
Tritanopia (blue-blind)
#009FA5
Achromatopsia (no color)
#8A8A8A

Design tokens & code

CSS
--color: #3791ca;
/* rgb */ color: rgb(55, 145, 202);
/* oklch */ color: oklch(62.9% 0.120 240.6);
Tailwind
colors: {
  custom: {
    50: '#81b1da',
    500: '#3791ca',
    950: '#000000',
  },
}
SCSS
$custom: #3791ca;
$custom-light: #81b1da;
$custom-dark: #000000;
JSON
{
  "hex": "#3791ca",
  "rgb": {
    "r": 55,
    "g": 145,
    "b": 202
  },
  "hsl": {
    "h": 203.265,
    "s": 58.103,
    "l": 50.392
  },
  "oklch": {
    "l": 0.62881,
    "c": 0.12014,
    "h": 240.6
  },
  "luminance": 0.25327
}

Semantic roles & 50–950 ramp

primary
#3791CA
secondary
#CFA78E
accent
#8346E1
background
#F8FAFD
surface
#F0F4FA
border
#CBCED3
text
#0C1015
muted
#7D7F83

Preview Lab

Preview with #3791CA

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

Preview Lab → · Contrast checker → · Palette generator →

#3791CA Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva