#377CCC#377CCC

#377CCC is a mid, vivid cyan. Relative luminance 0.196; OKLCH L 58.2% C 0.141 H 254.1°. Best body text is #000000 at 4.92:1 contrast (WCAG AA passes).

Color values

HEX#377CCC
RGBrgb(55, 124, 204)
HSLhsl(212, 59%, 51%)
HSVhsv(212, 73%, 80%)
CMYKcmyk(73%, 39.2%, 0%, 20%)
CIE-LABlab(51.36, 5.43, -47.69)
CIE-LCHlch(51.36, 48.00, 276.49°)
OKLaboklab(58.18% -0.0387 -0.136)
OKLCHoklch(58.18% 0.141 254.1)
XYZxyz(19.6782, 19.5850, 59.8582)
Luminance0.1959 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#377CCC #CC8737
analogous
#37C6CC #377CCC #3C37CC
triadic
#377CCC #CC377C #7CCC37
tetradic
#377CCC #CC37C6 #CC8737 #37CC3C
square
#377CCC #CC37C6 #CC8737 #37CC3C
split-complementary
#377CCC #CC3C37 #C6CC37
monochromatic
#1C416D #285F9E #377CCC #689CD8 #99BCE5

Accessibility & contrast

On white

4.27
#377CCC on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

4.92
#377CCC on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377CCC
4.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##377CCC#FFFFFF#000000##000000
##377CCC1.004.274.924.92
#FFFFFF4.271.0021.0021.00
#0000004.9221.001.001.00
##0000004.9221.001.001.00

Color blindness preview

Protanopia (red-blind)
#5782CF
Deuteranopia (green-blind)
#3F74CA
Tritanopia (blue-blind)
#008F9A
Achromatopsia (no color)
#7A7A7A

Design tokens & code

CSS
--color: #377ccc;
/* rgb */ color: rgb(55, 124, 204);
/* oklch */ color: oklch(58.2% 0.141 254.1);
Tailwind
colors: {
  custom: {
    50: '#81a1dc',
    500: '#377ccc',
    950: '#000000',
  },
}
SCSS
$custom: #377ccc;
$custom-light: #81a1dc;
$custom-dark: #000000;
JSON
{
  "hex": "#377ccc",
  "rgb": {
    "r": 55,
    "g": 124,
    "b": 204
  },
  "hsl": {
    "h": 212.215,
    "s": 59.363,
    "l": 50.784
  },
  "oklch": {
    "l": 0.58176,
    "c": 0.14143,
    "h": 254.1
  },
  "luminance": 0.19587
}

Semantic roles & 50–950 ramp

primary
#377CCC
secondary
#D0B28E
accent
#9A45E3
background
#F8F9FD
surface
#F0F2FB
border
#CBCCD4
text
#0C0E15
muted
#7D7E83

Preview Lab

Preview with #377CCC

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

Preview Lab → · Contrast checker → · Palette generator →

#377CCC Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva