#37B1CD#37B1CD

#37B1CD is a light, moderate cyan. Relative luminance 0.367; OKLCH L 70.6% C 0.111 H 216.7°. Best body text is #000000 at 8.33:1 contrast (WCAG AA passes).

Color values

HEX#37B1CD
RGBrgb(55, 177, 205)
HSLhsl(191, 60%, 51%)
HSVhsv(191, 73%, 80%)
CMYKcmyk(73.2%, 13.7%, 0%, 19.6%)
CIE-LABlab(67.02, -23.93, -23.81)
CIE-LCHlch(67.02, 33.75, 224.86°)
OKLaboklab(70.62% -0.0891 -0.0664)
OKLCHoklch(70.62% 0.111 216.7)
XYZxyz(28.3125, 36.6609, 63.3299)
Luminance0.3666 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#37B1CD #CD5337
analogous
#37CD9E #37B1CD #3766CD
triadic
#37B1CD #CD37B1 #B1CD37
tetradic
#37B1CD #9E37CD #CD5337 #66CD37
square
#37B1CD #9E37CD #CD5337 #66CD37
split-complementary
#37B1CD #CD3766 #CD9E37
monochromatic
#1C5F6E #28899F #37B1CD #68C4D9 #99D7E5

Accessibility & contrast

On white

2.52
#37B1CD on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

8.33
#37B1CD on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #37B1CD
8.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##37B1CD#FFFFFF#000000##000000
##37B1CD1.002.528.338.33
#FFFFFF2.521.0021.0021.00
#0000008.3321.001.001.00
##0000008.3321.001.001.00

Color blindness preview

Protanopia (red-blind)
#9EACCF
Deuteranopia (green-blind)
#8A9DCD
Tritanopia (blue-blind)
#00BBBA
Achromatopsia (no color)
#A3A3A3

Design tokens & code

CSS
--color: #37b1cd;
/* rgb */ color: rgb(55, 177, 205);
/* oklch */ color: oklch(70.6% 0.111 216.7);
Tailwind
colors: {
  custom: {
    50: '#83c8dc',
    500: '#37b1cd',
    950: '#000000',
  },
}
SCSS
$custom: #37b1cd;
$custom-light: #83c8dc;
$custom-dark: #000000;
JSON
{
  "hex": "#37b1cd",
  "rgb": {
    "r": 55,
    "g": 177,
    "b": 205
  },
  "hsl": {
    "h": 191.2,
    "s": 60,
    "l": 50.98
  },
  "oklch": {
    "l": 0.70615,
    "c": 0.11113,
    "h": 216.7
  },
  "luminance": 0.36664
}

Semantic roles & 50–950 ramp

primary
#37B1CD
secondary
#D19B8F
accent
#6245E3
background
#F8FCFD
surface
#F0F8FB
border
#CBD1D4
text
#0C1315
muted
#7D8283

Preview Lab

Preview with #37B1CD

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

Preview Lab → · Contrast checker → · Palette generator →

#37B1CD Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva