#37A9CC#37A9CC

#37A9CC is a light, moderate cyan. Relative luminance 0.335; OKLCH L 68.7% C 0.111 H 222.7°. Best body text is #000000 at 7.71:1 contrast (WCAG AA passes).

Color values

HEX#37A9CC
RGBrgb(55, 169, 204)
HSLhsl(194, 59%, 51%)
HSVhsv(194, 73%, 80%)
CMYKcmyk(73%, 17.2%, 0%, 20%)
CIE-LABlab(64.60, -20.12, -26.97)
CIE-LCHlch(64.60, 33.65, 233.28°)
OKLaboklab(68.66% -0.0816 -0.0755)
OKLCHoklch(68.66% 0.111 222.7)
XYZxyz(26.6581, 33.5447, 62.1848)
Luminance0.3355 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#37A9CC #CC5A37
analogous
#37CCA4 #37A9CC #375ECC
triadic
#37A9CC #CC37A9 #A9CC37
tetradic
#37A9CC #A437CC #CC5A37 #5ECC37
square
#37A9CC #A437CC #CC5A37 #5ECC37
split-complementary
#37A9CC #CC375E #CCA437
monochromatic
#1C5A6D #28829E #37A9CC #68BED8 #99D3E5

Accessibility & contrast

On white

2.72
#37A9CC on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

7.71
#37A9CC on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #37A9CC
7.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##37A9CC#FFFFFF#000000##000000
##37A9CC1.002.727.717.71
#FFFFFF2.721.0021.0021.00
#0000007.7121.001.001.00
##0000007.7121.001.001.00

Color blindness preview

Protanopia (red-blind)
#95A5CE
Deuteranopia (green-blind)
#8196CC
Tritanopia (blue-blind)
#00B4B4
Achromatopsia (no color)
#9D9D9D

Design tokens & code

CSS
--color: #37a9cc;
/* rgb */ color: rgb(55, 169, 204);
/* oklch */ color: oklch(68.7% 0.111 222.7);
Tailwind
colors: {
  custom: {
    50: '#82c2db',
    500: '#37a9cc',
    950: '#000000',
  },
}
SCSS
$custom: #37a9cc;
$custom-light: #82c2db;
$custom-dark: #000000;
JSON
{
  "hex": "#37a9cc",
  "rgb": {
    "r": 55,
    "g": 169,
    "b": 204
  },
  "hsl": {
    "h": 194.094,
    "s": 59.363,
    "l": 50.784
  },
  "oklch": {
    "l": 0.68657,
    "c": 0.11118,
    "h": 222.7
  },
  "luminance": 0.33548
}

Semantic roles & 50–950 ramp

primary
#37A9CC
secondary
#D09E8E
accent
#6A45E3
background
#F8FBFD
surface
#F0F7FB
border
#CBD0D4
text
#0C1215
muted
#7D8183

Preview Lab

Preview with #37A9CC

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

Preview Lab → · Contrast checker → · Palette generator →

#37A9CC Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva