#37ADD3#37ADD3
#37ADD3 is a light, moderate cyan. Relative luminance 0.354; OKLCH L 69.9% C 0.115 H 224.0°. Best body text is #000000 at 8.08:1 contrast (WCAG AA passes).
Color values
| HEX | #37ADD3 |
|---|---|
| RGB | rgb(55, 173, 211) |
| HSL | hsl(195, 64%, 52%) |
| HSV | hsv(195, 74%, 83%) |
| CMYK | cmyk(73.9%, 18%, 0%, 17.3%) |
| CIE-LAB | lab(66.06, -19.93, -28.60) |
| CIE-LCH | lch(66.06, 34.86, 235.12°) |
| OKLab | oklab(69.92% -0.0829 -0.0801) |
| OKLCH | oklch(69.92% 0.115 224) |
| XYZ | xyz(28.2721, 35.3992, 66.9581) |
| Luminance | 0.3540 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Turquoise Blue
#06B1C4
ΔE00 7.45
Deepskyblue
#00BFFF
ΔE00 7.45
Greyblue
#77A1B5
ΔE00 8.43
Bright Sky Blue
#02CCFE
ΔE00 8.44
Lightblue (survey)
#7BC8F6
ΔE00 9.93
Sky Blue
#87CEEB
ΔE00 10.57
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#37ADD3 #D35D37
analogous
#37D3AB #37ADD3 #375FD3
triadic
#37ADD3 #D337AD #ADD337
tetradic
#37ADD3 #AB37D3 #D35D37 #5FD337
square
#37ADD3 #AB37D3 #D35D37 #5FD337
split-complementary
#37ADD3 #D3375F #D3AB37
monochromatic
#1A5F76 #2588A8 #37ADD3 #69C2DE #9BD6E9
Accessibility & contrast
On white
2.60
#37ADD3 on #FFFFFF
AA ✗AA large ✗AAA ✗
On black
8.08
#37ADD3 on #000000
AA ✓AA large ✓AAA ✓
Best text color
#000000 on #37ADD3
8.08:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##37ADD3 | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##37ADD3 | 1.00 | 2.60 | 8.08 | 8.08 |
| #FFFFFF | 2.60 | 1.00 | 21.00 | 21.00 |
| #000000 | 8.08 | 21.00 | 1.00 | 1.00 |
| ##000000 | 8.08 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#98A9D5
Deuteranopia (green-blind)
#839AD3
Tritanopia (blue-blind)
#00B8B9
Achromatopsia (no color)
#A1A1A1
Design tokens & code
CSS
--color: #37add3; /* rgb */ color: rgb(55, 173, 211); /* oklch */ color: oklch(69.9% 0.115 224.0);
Tailwind
colors: {
custom: {
50: '#83c5e0',
500: '#37add3',
950: '#000000',
},
}SCSS
$custom: #37add3; $custom-light: #83c5e0; $custom-dark: #000000;
JSON
{
"hex": "#37add3",
"rgb": {
"r": 55,
"g": 173,
"b": 211
},
"hsl": {
"h": 194.615,
"s": 63.934,
"l": 52.157
},
"oklch": {
"l": 0.69916,
"c": 0.11527,
"h": 224
},
"luminance": 0.35403
}Semantic roles & 50–950 ramp
primary
#37ADD3
secondary
#D5A191
accent
#6941E7
background
#F8FCFD
surface
#F0F8FB
border
#CBD1D4
text
#0C1315
muted
#7D8283