#377DD3#377DD3

#377DD3 is a mid, vivid cyan. Relative luminance 0.202; OKLCH L 58.8% C 0.149 H 255.3°. Best body text is #000000 at 5.04:1 contrast (WCAG AA passes).

Color values

HEX#377DD3
RGBrgb(55, 125, 211)
HSLhsl(213, 64%, 52%)
HSVhsv(213, 74%, 83%)
CMYKcmyk(73.9%, 40.8%, 0%, 17.3%)
CIE-LABlab(52.04, 7.37, -50.59)
CIE-LCHlch(52.04, 51.12, 278.28°)
OKLaboklab(58.83% -0.038 -0.1445)
OKLCHoklch(58.83% 0.149 255.3)
XYZxyz(20.6627, 20.1803, 64.4216)
Luminance0.2018 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#377DD3 #D38D37
analogous
#37CBD3 #377DD3 #3F37D3
triadic
#377DD3 #D3377D #7DD337
tetradic
#377DD3 #D337CB #D38D37 #37D33F
square
#377DD3 #D337CB #D38D37 #37D33F
split-complementary
#377DD3 #D33F37 #CBD337
monochromatic
#1A4376 #2560A8 #377DD3 #699EDE #9BBEE9

Accessibility & contrast

On white

4.17
#377DD3 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.04
#377DD3 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #377DD3
5.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##377DD3#FFFFFF#000000##000000
##377DD31.004.175.045.04
#FFFFFF4.171.0021.0021.00
#0000005.0421.001.001.00
##0000005.0421.001.001.00

Color blindness preview

Protanopia (red-blind)
#5484D6
Deuteranopia (green-blind)
#3A75D1
Tritanopia (blue-blind)
#00919E
Achromatopsia (no color)
#7C7C7C

Design tokens & code

CSS
--color: #377dd3;
/* rgb */ color: rgb(55, 125, 211);
/* oklch */ color: oklch(58.8% 0.149 255.3);
Tailwind
colors: {
  custom: {
    50: '#82a2e1',
    500: '#377dd3',
    950: '#000000',
  },
}
SCSS
$custom: #377dd3;
$custom-light: #82a2e1;
$custom-dark: #000000;
JSON
{
  "hex": "#377dd3",
  "rgb": {
    "r": 55,
    "g": 125,
    "b": 211
  },
  "hsl": {
    "h": 213.077,
    "s": 63.934,
    "l": 52.157
  },
  "oklch": {
    "l": 0.58829,
    "c": 0.14943,
    "h": 255.3
  },
  "luminance": 0.20183
}

Semantic roles & 50–950 ramp

primary
#377DD3
secondary
#D5B691
accent
#9C41E7
background
#F8F9FD
surface
#F0F2FB
border
#CBCCD4
text
#0C0F15
muted
#7D7E83

Preview Lab

Preview with #377DD3

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

Preview Lab → · Contrast checker → · Palette generator →

#377DD3 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva