#377BC6#377BC6

#377BC6 is a mid, vivid cyan. Relative luminance 0.191; OKLCH L 57.6% C 0.135 H 253.1°. Best body text is #000000 at 4.81:1 contrast (WCAG AA passes).

Color values

HEX#377BC6
RGBrgb(55, 123, 198)
HSLhsl(211, 57%, 50%)
HSVhsv(211, 72%, 78%)
CMYKcmyk(72.2%, 37.9%, 0%, 22.4%)
CIE-LABlab(50.75, 3.86, -45.25)
CIE-LCHlch(50.75, 45.41, 274.87°)
OKLaboklab(57.59% -0.0392 -0.1289)
OKLCHoklch(57.59% 0.135 253.1)
XYZxyz(18.8478, 19.0533, 56.0995)
Luminance0.1905 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#377BC6 #C68237
analogous
#37C2C6 #377BC6 #3B37C6
triadic
#377BC6 #C6377B #7BC637
tetradic
#377BC6 #C637C2 #C68237 #37C63B
square
#377BC6 #C637C2 #C68237 #37C63B
split-complementary
#377BC6 #C63B37 #C2C637
monochromatic
#1C3F66 #2A5D96 #377BC6 #669AD4 #96BAE2

Accessibility & contrast

On white

4.36
#377BC6 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

4.81
#377BC6 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377BC6
4.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##377BC6#FFFFFF#000000##000000
##377BC61.004.364.814.81
#FFFFFF4.361.0021.0021.00
#0000004.8121.001.001.00
##0000004.8121.001.001.00

Color blindness preview

Protanopia (red-blind)
#5880C9
Deuteranopia (green-blind)
#4373C5
Tritanopia (blue-blind)
#008D97
Achromatopsia (no color)
#797979

Design tokens & code

CSS
--color: #377bc6;
/* rgb */ color: rgb(55, 123, 198);
/* oklch */ color: oklch(57.6% 0.135 253.1);
Tailwind
colors: {
  custom: {
    50: '#7fa0d8',
    500: '#377bc6',
    950: '#000000',
  },
}
SCSS
$custom: #377bc6;
$custom-light: #7fa0d8;
$custom-dark: #000000;
JSON
{
  "hex": "#377bc6",
  "rgb": {
    "r": 55,
    "g": 123,
    "b": 198
  },
  "hsl": {
    "h": 211.469,
    "s": 56.522,
    "l": 49.608
  },
  "oklch": {
    "l": 0.57589,
    "c": 0.13472,
    "h": 253.1
  },
  "luminance": 0.19055
}

Semantic roles & 50–950 ramp

primary
#377BC6
secondary
#CDAE8C
accent
#9848E0
background
#F8F9FD
surface
#F0F2FA
border
#CBCCD3
text
#0B0E14
muted
#7C7E83

Preview Lab

Preview with #377BC6

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

Preview Lab → · Contrast checker → · Palette generator →

#377BC6 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva