#3777CC#3777CC

#3777CC is a mid, vivid cyan. Relative luminance 0.184; OKLCH L 57.1% C 0.147 H 256.5°. Best body text is #000000 at 4.67:1 contrast (WCAG AA passes).

Color values

HEX#3777CC
RGBrgb(55, 119, 204)
HSLhsl(214, 59%, 51%)
HSVhsv(214, 73%, 80%)
CMYKcmyk(73%, 41.7%, 0%, 20%)
CIE-LABlab(49.93, 8.50, -49.97)
CIE-LCHlch(49.93, 50.69, 279.65°)
OKLaboklab(57.06% -0.0342 -0.1428)
OKLCHoklch(57.06% 0.147 256.5)
XYZxyz(19.0675, 18.3634, 59.6546)
Luminance0.1837 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3777CC #CC8C37
analogous
#37C2CC #3777CC #4137CC
triadic
#3777CC #CC3777 #77CC37
tetradic
#3777CC #CC37C2 #CC8C37 #37CC41
square
#3777CC #CC37C2 #CC8C37 #37CC41
split-complementary
#3777CC #CC4137 #C2CC37
monochromatic
#1C3F6D #285B9E #3777CC #6898D8 #99B9E5

Accessibility & contrast

On white

4.49
#3777CC on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

4.67
#3777CC on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3777CC
4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3777CC#FFFFFF#000000##000000
##3777CC1.004.494.674.67
#FFFFFF4.491.0021.0021.00
#0000004.6721.001.001.00
##0000004.6721.001.001.00

Color blindness preview

Protanopia (red-blind)
#4E7ECF
Deuteranopia (green-blind)
#3570CA
Tritanopia (blue-blind)
#008B97
Achromatopsia (no color)
#777777

Design tokens & code

CSS
--color: #3777cc;
/* rgb */ color: rgb(55, 119, 204);
/* oklch */ color: oklch(57.1% 0.147 256.5);
Tailwind
colors: {
  custom: {
    50: '#819ddc',
    500: '#3777cc',
    950: '#000000',
  },
}
SCSS
$custom: #3777cc;
$custom-light: #819ddc;
$custom-dark: #000000;
JSON
{
  "hex": "#3777cc",
  "rgb": {
    "r": 55,
    "g": 119,
    "b": 204
  },
  "hsl": {
    "h": 214.228,
    "s": 59.363,
    "l": 50.784
  },
  "oklch": {
    "l": 0.57063,
    "c": 0.14684,
    "h": 256.5
  },
  "luminance": 0.18366
}

Semantic roles & 50–950 ramp

primary
#3777CC
secondary
#D0B48E
accent
#9F45E3
background
#F8F9FD
surface
#F0F2FB
border
#CBCCD4
text
#0C0E15
muted
#7D7E83

Preview Lab

Preview with #3777CC

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

Preview Lab → · Contrast checker → · Palette generator →

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