#37B1D3#37B1D3

#37B1D3 is a light, moderate cyan. Relative luminance 0.370; OKLCH L 70.9% C 0.115 H 220.8°. Best body text is #000000 at 8.39:1 contrast (WCAG AA passes).

Color values

HEX#37B1D3
RGBrgb(55, 177, 211)
HSLhsl(193, 64%, 52%)
HSVhsv(193, 74%, 83%)
CMYKcmyk(73.9%, 16.1%, 0%, 17.3%)
CIE-LABlab(67.24, -22.01, -26.77)
CIE-LCHlch(67.24, 34.66, 230.58°)
OKLaboklab(70.87% -0.0868 -0.0749)
OKLCHoklch(70.87% 0.115 220.8)
XYZxyz(29.0507, 36.9562, 67.2176)
Luminance0.3696 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#37B1D3 #D35937
analogous
#37D3A7 #37B1D3 #3763D3
triadic
#37B1D3 #D337B1 #B1D337
tetradic
#37B1D3 #A737D3 #D35937 #63D337
square
#37B1D3 #A737D3 #D35937 #63D337
split-complementary
#37B1D3 #D33763 #D3A737
monochromatic
#1A6276 #258BA8 #37B1D3 #69C5DE #9BD8E9

Accessibility & contrast

On white

2.50
#37B1D3 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

8.39
#37B1D3 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #37B1D3
8.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##37B1D3#FFFFFF#000000##000000
##37B1D31.002.508.398.39
#FFFFFF2.501.0021.0021.00
#0000008.3921.001.001.00
##0000008.3921.001.001.00

Color blindness preview

Protanopia (red-blind)
#9DACD5
Deuteranopia (green-blind)
#879DD3
Tritanopia (blue-blind)
#00BCBC
Achromatopsia (no color)
#A4A4A4

Design tokens & code

CSS
--color: #37b1d3;
/* rgb */ color: rgb(55, 177, 211);
/* oklch */ color: oklch(70.9% 0.115 220.8);
Tailwind
colors: {
  custom: {
    50: '#84c8e0',
    500: '#37b1d3',
    950: '#000000',
  },
}
SCSS
$custom: #37b1d3;
$custom-light: #84c8e0;
$custom-dark: #000000;
JSON
{
  "hex": "#37b1d3",
  "rgb": {
    "r": 55,
    "g": 177,
    "b": 211
  },
  "hsl": {
    "h": 193.077,
    "s": 63.934,
    "l": 52.157
  },
  "oklch": {
    "l": 0.70868,
    "c": 0.11459,
    "h": 220.8
  },
  "luminance": 0.3696
}

Semantic roles & 50–950 ramp

primary
#37B1D3
secondary
#D5A091
accent
#6541E7
background
#F8FCFD
surface
#F0F8FB
border
#CBD1D4
text
#0C1315
muted
#7D8283

Preview Lab

Preview with #37B1D3

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

Preview Lab → · Contrast checker → · Palette generator →

#37B1D3 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva