#37B9D7#37B9D7

#37B9D7 is a light, moderate cyan. Relative luminance 0.404; OKLCH L 72.9% C 0.116 H 217.0°. Best body text is #000000 at 9.08:1 contrast (WCAG AA passes).

Color values

HEX#37B9D7
RGBrgb(55, 185, 215)
HSLhsl(191, 67%, 53%)
HSVhsv(191, 74%, 84%)
CMYKcmyk(74.4%, 14%, 0%, 15.7%)
CIE-LABlab(69.76, -24.81, -25.10)
CIE-LCHlch(69.76, 35.29, 225.34°)
OKLaboklab(72.94% -0.0929 -0.0701)
OKLCHoklch(72.94% 0.116 217)
XYZxyz(31.1851, 40.4127, 70.4337)
Luminance0.4042 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#37B9D7 #D75537
analogous
#37D7A5 #37B9D7 #3769D7
triadic
#37B9D7 #D737B9 #B9D737
tetradic
#37B9D7 #A537D7 #D75537 #69D737
square
#37B9D7 #A537D7 #D75537 #69D737
split-complementary
#37B9D7 #D73769 #D7A537
monochromatic
#19697B #2394AE #37B9D7 #6ACBE1 #9DDDEB

Accessibility & contrast

On white

2.31
#37B9D7 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

9.08
#37B9D7 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #37B9D7
9.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##37B9D7#FFFFFF#000000##000000
##37B9D71.002.319.089.08
#FFFFFF2.311.0021.0021.00
#0000009.0821.001.001.00
##0000009.0821.001.001.00

Color blindness preview

Protanopia (red-blind)
#A5B3D9
Deuteranopia (green-blind)
#8FA4D7
Tritanopia (blue-blind)
#00C4C2
Achromatopsia (no color)
#AAAAAA

Design tokens & code

CSS
--color: #37b9d7;
/* rgb */ color: rgb(55, 185, 215);
/* oklch */ color: oklch(72.9% 0.116 217.0);
Tailwind
colors: {
  custom: {
    50: '#85cee3',
    500: '#37b9d7',
    950: '#000000',
  },
}
SCSS
$custom: #37b9d7;
$custom-light: #85cee3;
$custom-dark: #000000;
JSON
{
  "hex": "#37b9d7",
  "rgb": {
    "r": 55,
    "g": 185,
    "b": 215
  },
  "hsl": {
    "h": 191.25,
    "s": 66.667,
    "l": 52.941
  },
  "oklch": {
    "l": 0.72941,
    "c": 0.11639,
    "h": 217
  },
  "luminance": 0.40416
}

Semantic roles & 50–950 ramp

primary
#37B9D7
secondary
#D79F92
accent
#5E3EEA
background
#F9FCFD
surface
#F1F9FB
border
#CBD2D4
text
#0D1315
muted
#7E8283

Preview Lab

Preview with #37B9D7

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

Preview Lab → · Contrast checker → · Palette generator →

#37B9D7 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva