#3777C7#3777C7

#3777C7 is a mid, vivid cyan. Relative luminance 0.181; OKLCH L 56.8% C 0.140 H 255.4°. Best body text is #000000 at 4.63:1 contrast (WCAG AA passes).

Color values

HEX#3777C7
RGBrgb(55, 119, 199)
HSLhsl(213, 57%, 50%)
HSVhsv(213, 72%, 78%)
CMYKcmyk(72.4%, 40.2%, 0%, 22%)
CIE-LABlab(49.65, 6.67, -47.57)
CIE-LCHlch(49.65, 48.04, 277.99°)
OKLaboklab(56.75% -0.0352 -0.1358)
OKLCHoklch(56.75% 0.14 255.4)
XYZxyz(18.4774, 18.1274, 56.5469)
Luminance0.1813 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3777C7 #C78737
analogous
#37BFC7 #3777C7 #3F37C7
triadic
#3777C7 #C73777 #77C737
tetradic
#3777C7 #C737BF #C78737 #37C73F
square
#3777C7 #C737BF #C78737 #37C73F
split-complementary
#3777C7 #C73F37 #BFC737
monochromatic
#1C3E67 #2A5A97 #3777C7 #6697D5 #96B8E2

Accessibility & contrast

On white

4.54
#3777C7 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

4.63
#3777C7 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3777C7
4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3777C7#FFFFFF#000000##000000
##3777C71.004.544.634.63
#FFFFFF4.541.0021.0021.00
#0000004.6321.001.001.00
##0000004.6321.001.001.00

Color blindness preview

Protanopia (red-blind)
#517DCA
Deuteranopia (green-blind)
#3A70C5
Tritanopia (blue-blind)
#008A95
Achromatopsia (no color)
#767676

Design tokens & code

CSS
--color: #3777c7;
/* rgb */ color: rgb(55, 119, 199);
/* oklch */ color: oklch(56.8% 0.140 255.4);
Tailwind
colors: {
  custom: {
    50: '#809dd8',
    500: '#3777c7',
    950: '#000000',
  },
}
SCSS
$custom: #3777c7;
$custom-light: #809dd8;
$custom-dark: #000000;
JSON
{
  "hex": "#3777c7",
  "rgb": {
    "r": 55,
    "g": 119,
    "b": 199
  },
  "hsl": {
    "h": 213.333,
    "s": 56.693,
    "l": 49.804
  },
  "oklch": {
    "l": 0.5675,
    "c": 0.14026,
    "h": 255.4
  },
  "luminance": 0.18129
}

Semantic roles & 50–950 ramp

primary
#3777C7
secondary
#CDB18C
accent
#9C48E0
background
#F8F9FD
surface
#F0F2FA
border
#CBCCD3
text
#0B0E14
muted
#7C7E83

Preview Lab

Preview with #3777C7

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

Preview Lab → · Contrast checker → · Palette generator →

#3777C7 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva