#37B1D2#37B1D2

#37B1D2 is a light, moderate cyan. Relative luminance 0.369; OKLCH L 70.8% C 0.114 H 220.1°. Best body text is #000000 at 8.38:1 contrast (WCAG AA passes).

Color values

HEX#37B1D2
RGBrgb(55, 177, 210)
HSLhsl(193, 63%, 52%)
HSVhsv(193, 74%, 82%)
CMYKcmyk(73.8%, 15.7%, 0%, 17.6%)
CIE-LABlab(67.21, -22.33, -26.28)
CIE-LCHlch(67.21, 34.48, 229.64°)
OKLaboklab(70.83% -0.0871 -0.0734)
OKLCHoklch(70.83% 0.114 220.1)
XYZxyz(28.9257, 36.9062, 66.5594)
Luminance0.3691 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#37B1D2 #D25837
analogous
#37D2A5 #37B1D2 #3764D2
triadic
#37B1D2 #D237B1 #B1D237
tetradic
#37B1D2 #A537D2 #D25837 #64D237
square
#37B1D2 #A537D2 #D25837 #64D237
split-complementary
#37B1D2 #D23764 #D2A537
monochromatic
#1A6174 #258BA6 #37B1D2 #69C4DD #9BD8E8

Accessibility & contrast

On white

2.51
#37B1D2 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

8.38
#37B1D2 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #37B1D2
8.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##37B1D2#FFFFFF#000000##000000
##37B1D21.002.518.388.38
#FFFFFF2.511.0021.0021.00
#0000008.3821.001.001.00
##0000008.3821.001.001.00

Color blindness preview

Protanopia (red-blind)
#9DACD4
Deuteranopia (green-blind)
#889DD2
Tritanopia (blue-blind)
#00BCBC
Achromatopsia (no color)
#A4A4A4

Design tokens & code

CSS
--color: #37b1d2;
/* rgb */ color: rgb(55, 177, 210);
/* oklch */ color: oklch(70.8% 0.114 220.1);
Tailwind
colors: {
  custom: {
    50: '#84c8e0',
    500: '#37b1d2',
    950: '#000000',
  },
}
SCSS
$custom: #37b1d2;
$custom-light: #84c8e0;
$custom-dark: #000000;
JSON
{
  "hex": "#37b1d2",
  "rgb": {
    "r": 55,
    "g": 177,
    "b": 210
  },
  "hsl": {
    "h": 192.774,
    "s": 63.265,
    "l": 51.961
  },
  "oklch": {
    "l": 0.70825,
    "c": 0.11397,
    "h": 220.1
  },
  "luminance": 0.3691
}

Semantic roles & 50–950 ramp

primary
#37B1D2
secondary
#D49F90
accent
#6541E6
background
#F8FCFD
surface
#F0F8FB
border
#CBD1D4
text
#0C1315
muted
#7D8283

Preview Lab

Preview with #37B1D2

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

Preview Lab → · Contrast checker → · Palette generator →

#37B1D2 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva