Sky blue
#87CEEB
| HEX | #87CEEB |
|---|---|
| RGB | 135, 206, 235 |
| HSL | 197°, 71%, 73% |
| CMYK | 43%, 12%, 0%, 8% |
| Relative luminance | 0.55 |
Text contrast
On white
1.74:1 Below AA
On black
12.06:1 Passes AA
Colours that work with it
Complement
Analogous
Triadic
Shade scale
Seen with colour blindness
How to read this
- A hex code writes red, green and blue as two hexadecimal digits each. #ff0000 is red at full strength and the others at zero.
- HSL states hue (0–360°), saturation and lightness. Nudging a colour brighter means changing one number, which is why it is easier to work with by hand.
- Text contrast follows WCAG. Body-size text needs 4.5:1 or better, and 21:1 between white and black is the maximum possible.
- The colour-blindness row computes how this colour appears under three types of colour vision deficiency — the reason never to encode information in colour alone.
Frequently asked questions
Q. What is the hex code for Sky blue?
#87CEEB. That is 135, 206, 235 in RGB, and hue 197°, saturation 71%, lightness 73% in HSL.
Q. Should text on Sky blue be white or black?
Black. Contrast against white is 1.74:1 and against black 12.06:1, so take the higher one if body-size text has to be readable.
Q. What is the complement of Sky blue?
#EBA589, sitting 180° across the colour wheel. Side by side the two push against each other hardest, which makes it a good accent but tiring over large areas.
Q. Can I send these CMYK values straight to print?
The computed values are C 43% · M 12% · Y 0% · K 8%. Real printing depends on paper and ink, so check against the printer's swatch book when the colour matters.
Q. Is this colour distinguishable with colour blindness?
It appears as #A6A6E4 with protanopia, #A29CE2 with deuteranopia and #8BDEDD with tritanopia. Where those values converge with another colour, add a shape or a label instead of relying on hue.