#66CBE5#66CBE5
#66CBE5 is a light, moderate cyan. Relative luminance 0.512; OKLCH L 79.1% C 0.101 H 216.9°. Best body text is #000000 at 11.24:1 contrast (WCAG AA passes).
Color values
| HEX | #66CBE5 |
|---|---|
| RGB | rgb(102, 203, 229) |
| HSL | hsl(192, 71%, 65%) |
| HSV | hsv(192, 55%, 90%) |
| CMYK | cmyk(55.5%, 11.4%, 0%, 10.2%) |
| CIE-LAB | lab(76.79, -22.27, -21.85) |
| CIE-LCH | lch(76.79, 31.20, 224.46°) |
| OKLab | oklab(79.12% -0.0806 -0.0606) |
| OKLCH | oklch(79.12% 0.101 216.9) |
| XYZ | xyz(40.9727, 51.1900, 81.8350) |
| Luminance | 0.5119 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Sky Blue
#87CEEB
ΔE00 4.51
Neon Blue
#04D9FF
ΔE00 5.16
Baby Blue
#89CFF0
ΔE00 5.63
Bright Sky Blue
#02CCFE
ΔE00 5.97
Aqua Blue
#02D8E9
ΔE00 7.27
Lightblue (survey)
#7BC8F6
ΔE00 7.88
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#66CBE5 #E58066
analogous
#66E5BF #66CBE5 #668CE5
triadic
#66CBE5 #E566CB #CBE566
tetradic
#66CBE5 #BF66E5 #E58066 #8CE566
square
#66CBE5 #BF66E5 #E58066 #8CE566
split-complementary
#66CBE5 #E5668C #E5BF66
monochromatic
#1E94B2 #32B9DC #66CBE5 #9ADDEE #CFEFF7
Accessibility & contrast
On white
1.87
#66CBE5 on #FFFFFF
AA ✗AA large ✗AAA ✗
On black
11.24
#66CBE5 on #000000
AA ✓AA large ✓AAA ✓
Best text color
#000000 on #66CBE5
11.24:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##66CBE5 | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##66CBE5 | 1.00 | 1.87 | 11.24 | 11.24 |
| #FFFFFF | 1.87 | 1.00 | 21.00 | 21.00 |
| #000000 | 11.24 | 21.00 | 1.00 | 1.00 |
| ##000000 | 11.24 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#BAC6E6
Deuteranopia (green-blind)
#A7B7E5
Tritanopia (blue-blind)
#00D4D3
Achromatopsia (no color)
#BEBEBE
Design tokens & code
CSS
--color: #66cbe5; /* rgb */ color: rgb(102, 203, 229); /* oklch */ color: oklch(79.1% 0.101 216.9);
Tailwind
colors: {
custom: {
50: '#9bdbed',
500: '#66cbe5',
950: '#000000',
},
}SCSS
$custom: #66cbe5; $custom-light: #9bdbed; $custom-dark: #000000;
JSON
{
"hex": "#66cbe5",
"rgb": {
"r": 102,
"g": 203,
"b": 229
},
"hsl": {
"h": 192.283,
"s": 70.95,
"l": 64.902
},
"oklch": {
"l": 0.79116,
"c": 0.10085,
"h": 216.9
},
"luminance": 0.51194
}Semantic roles & 50–950 ramp
primary
#66CBE5
secondary
#B3553C
accent
#3A13D3
background
#FCFEFE
surface
#F5FBFD
border
#CFD4D5
text
#0F1516
muted
#808484