#37ACD3#37ACD3
#37ACD3 is a light, moderate cyan. Relative luminance 0.350; OKLCH L 69.7% C 0.116 H 224.8°. Best body text is #000000 at 8.00:1 contrast (WCAG AA passes).
Color values
| HEX | #37ACD3 |
|---|---|
| RGB | rgb(55, 172, 211) |
| HSL | hsl(195, 64%, 52%) |
| HSV | hsv(195, 74%, 83%) |
| CMYK | cmyk(73.9%, 18.5%, 0%, 17.3%) |
| CIE-LAB | lab(65.76, -19.41, -29.05) |
| CIE-LCH | lch(65.76, 34.94, 236.26°) |
| OKLab | oklab(69.68% -0.0819 -0.0814) |
| OKLCH | oklch(69.68% 0.116 224.8) |
| XYZ | xyz(28.0811, 35.0171, 66.8944) |
| Luminance | 0.3502 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Deepskyblue
#00BFFF
ΔE00 7.39
Turquoise Blue
#06B1C4
ΔE00 7.83
Greyblue
#77A1B5
ΔE00 8.34
Bright Sky Blue
#02CCFE
ΔE00 8.66
Lightblue (survey)
#7BC8F6
ΔE00 9.98
Sky Blue
#87CEEB
ΔE00 10.80
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#37ACD3 #D35E37
analogous
#37D3AC #37ACD3 #375ED3
triadic
#37ACD3 #D337AC #ACD337
tetradic
#37ACD3 #AC37D3 #D35E37 #5ED337
square
#37ACD3 #AC37D3 #D35E37 #5ED337
split-complementary
#37ACD3 #D3375E #D3AC37
monochromatic
#1A5F76 #2587A8 #37ACD3 #69C1DE #9BD6E9
Accessibility & contrast
On white
2.62
#37ACD3 on #FFFFFF
AA ✗AA large ✗AAA ✗
On black
8.00
#37ACD3 on #000000
AA ✓AA large ✓AAA ✓
Best text color
#000000 on #37ACD3
8.00:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##37ACD3 | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##37ACD3 | 1.00 | 2.62 | 8.00 | 8.00 |
| #FFFFFF | 2.62 | 1.00 | 21.00 | 21.00 |
| #000000 | 8.00 | 21.00 | 1.00 | 1.00 |
| ##000000 | 8.00 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#96A8D5
Deuteranopia (green-blind)
#8199D3
Tritanopia (blue-blind)
#00B8B9
Achromatopsia (no color)
#A0A0A0
Design tokens & code
CSS
--color: #37acd3; /* rgb */ color: rgb(55, 172, 211); /* oklch */ color: oklch(69.7% 0.116 224.8);
Tailwind
colors: {
custom: {
50: '#83c4e0',
500: '#37acd3',
950: '#000000',
},
}SCSS
$custom: #37acd3; $custom-light: #83c4e0; $custom-dark: #000000;
JSON
{
"hex": "#37acd3",
"rgb": {
"r": 55,
"g": 172,
"b": 211
},
"hsl": {
"h": 195,
"s": 63.934,
"l": 52.157
},
"oklch": {
"l": 0.69679,
"c": 0.1155,
"h": 224.8
},
"luminance": 0.3502
}Semantic roles & 50–950 ramp
primary
#37ACD3
secondary
#D5A291
accent
#6A41E7
background
#F8FCFD
surface
#F0F8FB
border
#CBD1D4
text
#0C1215
muted
#7D8183