#37A3CF#37A3CF
#37A3CF is a light, moderate cyan. Relative luminance 0.315; OKLCH L 67.4% C 0.115 H 229.6°. Best body text is #000000 at 7.30:1 contrast (WCAG AA passes).
Color values
| HEX | #37A3CF |
|---|---|
| RGB | rgb(55, 163, 207) |
| HSL | hsl(197, 61%, 51%) |
| HSV | hsv(197, 73%, 81%) |
| CMYK | cmyk(73.4%, 21.3%, 0%, 18.8%) |
| CIE-LAB | lab(62.93, -15.95, -31.21) |
| CIE-LCH | lch(62.93, 35.05, 242.93°) |
| OKLab | oklab(67.36% -0.0747 -0.0876) |
| OKLCH | oklch(67.36% 0.115 229.6) |
| XYZ | xyz(25.9307, 31.5086, 63.7345) |
| Luminance | 0.3151 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Greyblue
#77A1B5
ΔE00 8.07
Deepskyblue
#00BFFF
ΔE00 8.56
Azure (survey)
#069AF3
ΔE00 9.14
Turquoise Blue
#06B1C4
ΔE00 10.32
Bluegrey
#85A3B2
ΔE00 10.79
Water Blue
#0E87CC
ΔE00 11.00
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#37A3CF #CF6337
analogous
#37CFAF #37A3CF #3757CF
triadic
#37A3CF #CF37A3 #A3CF37
tetradic
#37A3CF #AF37CF #CF6337 #57CF37
square
#37A3CF #AF37CF #CF6337 #57CF37
split-complementary
#37A3CF #CF3757 #CFAF37
monochromatic
#1B5871 #277EA2 #37A3CF #68BADB #9AD0E7
Accessibility & contrast
On white
2.88
#37A3CF on #FFFFFF
AA ✗AA large ✗AAA ✗
On black
7.30
#37A3CF on #000000
AA ✓AA large ✓AAA ✓
Best text color
#000000 on #37A3CF
7.30:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##37A3CF | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##37A3CF | 1.00 | 2.88 | 7.30 | 7.30 |
| #FFFFFF | 2.88 | 1.00 | 21.00 | 21.00 |
| #000000 | 7.30 | 21.00 | 1.00 | 1.00 |
| ##000000 | 7.30 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#8CA1D1
Deuteranopia (green-blind)
#7892CE
Tritanopia (blue-blind)
#00AFB2
Achromatopsia (no color)
#989898
Design tokens & code
CSS
--color: #37a3cf; /* rgb */ color: rgb(55, 163, 207); /* oklch */ color: oklch(67.4% 0.115 229.6);
Tailwind
colors: {
custom: {
50: '#82bedd',
500: '#37a3cf',
950: '#000000',
},
}SCSS
$custom: #37a3cf; $custom-light: #82bedd; $custom-dark: #000000;
JSON
{
"hex": "#37a3cf",
"rgb": {
"r": 55,
"g": 163,
"b": 207
},
"hsl": {
"h": 197.368,
"s": 61.29,
"l": 51.373
},
"oklch": {
"l": 0.67364,
"c": 0.11516,
"h": 229.6
},
"luminance": 0.31512
}Semantic roles & 50–950 ramp
primary
#37A3CF
secondary
#D2A38F
accent
#7243E4
background
#F8FBFD
surface
#F0F6FB
border
#CBD0D4
text
#0C1215
muted
#7D8183