#37A3C9#37A3C9

#37A3C9 is a light, moderate cyan. Relative luminance 0.312; OKLCH L 67.1% C 0.110 H 225.8°. Best body text is #000000 at 7.24:1 contrast (WCAG AA passes).

Color values

HEX#37A3C9
RGBrgb(55, 163, 201)
HSLhsl(196, 57%, 50%)
HSVhsv(196, 73%, 79%)
CMYKcmyk(72.6%, 18.9%, 0%, 21.2%)
CIE-LABlab(62.69, -17.94, -28.24)
CIE-LCHlch(62.69, 33.46, 237.58°)
OKLaboklab(67.09% -0.0769 -0.0791)
OKLCHoklch(67.09% 0.11 225.8)
XYZxyz(25.2110, 31.2207, 59.9445)
Luminance0.3122 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#37A3C9 #C95D37
analogous
#37C9A6 #37A3C9 #375AC9
triadic
#37A3C9 #C937A3 #A3C937
tetradic
#37A3C9 #A637C9 #C95D37 #5AC937
square
#37A3C9 #A637C9 #C95D37 #5AC937
split-complementary
#37A3C9 #C9375A #C9A637
monochromatic
#1C5569 #297C99 #37A3C9 #67B9D6 #97CFE3

Accessibility & contrast

On white

2.90
#37A3C9 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

7.24
#37A3C9 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #37A3C9
7.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##37A3C9#FFFFFF#000000##000000
##37A3C91.002.907.247.24
#FFFFFF2.901.0021.0021.00
#0000007.2421.001.001.00
##0000007.2421.001.001.00

Color blindness preview

Protanopia (red-blind)
#8EA0CB
Deuteranopia (green-blind)
#7A91C9
Tritanopia (blue-blind)
#00AEAF
Achromatopsia (no color)
#989898

Design tokens & code

CSS
--color: #37a3c9;
/* rgb */ color: rgb(55, 163, 201);
/* oklch */ color: oklch(67.1% 0.110 225.8);
Tailwind
colors: {
  custom: {
    50: '#81bed9',
    500: '#37a3c9',
    950: '#000000',
  },
}
SCSS
$custom: #37a3c9;
$custom-light: #81bed9;
$custom-dark: #000000;
JSON
{
  "hex": "#37a3c9",
  "rgb": {
    "r": 55,
    "g": 163,
    "b": 201
  },
  "hsl": {
    "h": 195.616,
    "s": 57.48,
    "l": 50.196
  },
  "oklch": {
    "l": 0.67092,
    "c": 0.11033,
    "h": 225.8
  },
  "luminance": 0.31224
}

Semantic roles & 50–950 ramp

primary
#37A3C9
secondary
#CF9E8D
accent
#6F47E1
background
#F8FBFD
surface
#F0F6FA
border
#CBD0D3
text
#0C1214
muted
#7D8183

Preview Lab

Preview with #37A3C9

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

Preview Lab → · Contrast checker → · Palette generator →

#37A3C9 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva