#377DCC#377DCC

#377DCC is a mid, vivid cyan. Relative luminance 0.198; OKLCH L 58.4% C 0.140 H 253.6°. Best body text is #000000 at 4.97:1 contrast (WCAG AA passes).

Color values

HEX#377DCC
RGBrgb(55, 125, 204)
HSLhsl(212, 59%, 51%)
HSVhsv(212, 73%, 80%)
CMYKcmyk(73%, 38.7%, 0%, 20%)
CIE-LABlab(51.65, 4.82, -47.24)
CIE-LCHlch(51.65, 47.48, 275.82°)
OKLaboklab(58.4% -0.0396 -0.1347)
OKLCHoklch(58.4% 0.14 253.6)
XYZxyz(19.8042, 19.8369, 59.9002)
Luminance0.1984 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#377DCC #CC8637
analogous
#37C8CC #377DCC #3B37CC
triadic
#377DCC #CC377D #7DCC37
tetradic
#377DCC #CC37C8 #CC8637 #37CC3B
square
#377DCC #CC37C8 #CC8637 #37CC3B
split-complementary
#377DCC #CC3B37 #C8CC37
monochromatic
#1C426D #285F9E #377DCC #689DD8 #99BCE5

Accessibility & contrast

On white

4.23
#377DCC on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

4.97
#377DCC on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377DCC
4.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##377DCC#FFFFFF#000000##000000
##377DCC1.004.234.974.97
#FFFFFF4.231.0021.0021.00
#0000004.9721.001.001.00
##0000004.9721.001.001.00

Color blindness preview

Protanopia (red-blind)
#5883CF
Deuteranopia (green-blind)
#4175CA
Tritanopia (blue-blind)
#00909B
Achromatopsia (no color)
#7B7B7B

Design tokens & code

CSS
--color: #377dcc;
/* rgb */ color: rgb(55, 125, 204);
/* oklch */ color: oklch(58.4% 0.140 253.6);
Tailwind
colors: {
  custom: {
    50: '#81a2dc',
    500: '#377dcc',
    950: '#000000',
  },
}
SCSS
$custom: #377dcc;
$custom-light: #81a2dc;
$custom-dark: #000000;
JSON
{
  "hex": "#377dcc",
  "rgb": {
    "r": 55,
    "g": 125,
    "b": 204
  },
  "hsl": {
    "h": 211.812,
    "s": 59.363,
    "l": 50.784
  },
  "oklch": {
    "l": 0.584,
    "c": 0.14038,
    "h": 253.6
  },
  "luminance": 0.19839
}

Semantic roles & 50–950 ramp

primary
#377DCC
secondary
#D0B18E
accent
#9945E3
background
#F8F9FD
surface
#F0F2FB
border
#CBCCD4
text
#0C0F15
muted
#7D7E83

Preview Lab

Preview with #377DCC

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

Preview Lab → · Contrast checker → · Palette generator →

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