Royal blue
#4169E1
| HEX | #4169E1 |
|---|---|
| RGB | 65, 105, 225 |
| HSL | 225°, 73%, 57% |
| CMYK | 71%, 53%, 0%, 12% |
| Relative luminance | 0.17 |
Text contrast
On white
4.85:1 Passes AA
On black
4.33:1 Below 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 Royal blue?
#4169E1. That is 65, 105, 225 in RGB, and hue 225°, saturation 73%, lightness 57% in HSL.
Q. Should text on Royal blue be white or black?
White. Contrast against white is 4.85:1 and against black 4.33:1, so take the higher one if body-size text has to be readable.
Q. What is the complement of Royal blue?
#E1B941, 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 71% · M 53% · Y 0% · K 12%. 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 #5253C4 with protanopia, #504DBD with deuteranopia and #43ADA8 with tritanopia. Where those values converge with another colour, add a shape or a label instead of relying on hue.