#66DAFD#66DAFD
#66DAFD is a very light, moderate cyan. Relative luminance 0.601; OKLCH L 83.5% C 0.115 H 220.6°. Best body text is #000000 at 13.01:1 contrast (WCAG AA passes).
Color values
| HEX | #66DAFD |
|---|---|
| RGB | rgb(102, 218, 253) |
| HSL | hsl(194, 97%, 70%) |
| HSV | hsv(194, 60%, 99%) |
| CMYK | cmyk(59.7%, 13.8%, 0%, 0.8%) |
| CIE-LAB | lab(81.87, -22.92, -26.93) |
| CIE-LCH | lch(81.87, 35.36, 229.60°) |
| OKLab | oklab(83.45% -0.0874 -0.0749) |
| OKLCH | oklch(83.45% 0.115 220.6) |
| XYZ | xyz(48.2735, 60.0546, 101.9571) |
| Luminance | 0.6006 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Neon Blue
#04D9FF
ΔE00 3.61
Sky Blue
#87CEEB
ΔE00 4.83
Baby Blue
#89CFF0
ΔE00 5.22
Bright Sky Blue
#02CCFE
ΔE00 5.33
Ice Blue
#A5DFF9
ΔE00 6.81
Lightskyblue
#87CEFA
ΔE00 7.16
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#66DAFD #FD8966
analogous
#66FDD4 #66DAFD #668FFD
triadic
#66DAFD #FD66DA #DAFD66
tetradic
#66DAFD #D466FD #FD8966 #8FFD66
square
#66DAFD #D466FD #FD8966 #8FFD66
split-complementary
#66DAFD #FD668F #FDD466
monochromatic
#03B1E6 #2ACBFC #66DAFD #A2E9FE #DFF7FF
Accessibility & contrast
On white
1.61
#66DAFD on #FFFFFF
AA ✗AA large ✗AAA ✗
On black
13.01
#66DAFD on #000000
AA ✓AA large ✓AAA ✓
Best text color
#000000 on #66DAFD
13.01:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##66DAFD | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##66DAFD | 1.00 | 1.61 | 13.01 | 13.01 |
| #FFFFFF | 1.61 | 1.00 | 21.00 | 21.00 |
| #000000 | 13.01 | 21.00 | 1.00 | 1.00 |
| ##000000 | 13.01 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#C5D5FF
Deuteranopia (green-blind)
#AFC5FD
Tritanopia (blue-blind)
#00E5E5
Achromatopsia (no color)
#CCCCCC
Design tokens & code
CSS
--color: #66dafd; /* rgb */ color: rgb(102, 218, 253); /* oklch */ color: oklch(83.5% 0.115 220.6);
Tailwind
colors: {
custom: {
50: '#9fe5fe',
500: '#66dafd',
950: '#000000',
},
}SCSS
$custom: #66dafd; $custom-light: #9fe5fe; $custom-dark: #000000;
JSON
{
"hex": "#66dafd",
"rgb": {
"r": 102,
"g": 218,
"b": 253
},
"hsl": {
"h": 193.907,
"s": 97.419,
"l": 69.608
},
"oklch": {
"l": 0.8345,
"c": 0.11509,
"h": 220.6
},
"luminance": 0.60059
}Semantic roles & 50–950 ramp
primary
#66DAFD
secondary
#D8562F
accent
#3500E6
background
#FDFEFF
surface
#F7FCFF
border
#D0D5D7
text
#101517
muted
#818485