Close to Royal Blue
#166DFF
#166DFF is a mid-tone, vivid blue, close to the color Royal Blue. In RGB it’s made of 8.6% red, 42.7% green, and 100% blue. Its hue is 218°, with 100% saturation and 54% lightness, so it reads as a cool color. Black text sits best on top of it.
Color codes
Tints, shades & tones
Tints add white, shades add black, tones add gray. Tap any one to open its page.
Tints
Shades
Tones
Color harmonies
Combinations from the color wheel, built around #166DFF.
Split complementary
The two neighbors of the complement: contrast that’s easier to balance.
Open in the palette creator →Tetradic
Two complementary pairs: rich, best with one color in charge.
Open in the palette creator →Contrast & readability
WCAG contrast ratios for text. 4.5:1 is the minimum for body text, 3:1 for large text.
White text on this color
4.50:1 AABlack text on this color
4.67:1 AAThis color as text on white
4.50:1 AAThis color as text on black
4.67:1 AAHow it looks with color blindness
About 1 in 12 men and 1 in 200 women see color differently. Here’s #166DFF as they’d see it.
#166DFF in use
A headline in this color
Body text stays dark for reading; the color carries buttons, links, and accents.
On a dark background
Get startedSimilar colors
Brands with a similar color
Brand names identify the brands only; no affiliation. Test yourself in Brand Colors.
Questions about #166DFF
What color is #166DFF?
#166DFF is a mid-tone, vivid blue, close to the color Royal Blue. In RGB it’s made of 8.6% red, 42.7% green, and 100% blue. Its hue is 218°, with 100% saturation and 54% lightness, so it reads as a cool color. Black text sits best on top of it.
What is #166DFF in RGB?
#166DFF is rgb(22, 109, 255): 22 red, 109 green, and 255 blue on a 0–255 scale.
What is #166DFF in CMYK?
Roughly cmyk(91, 57, 0, 0). Print results depend on paper and press, so proof it before a big print run.
What Pantone is closest to #166DFF?
PANTONE 293 C is the closest match in our list. Screen colors and ink never match perfectly; check a physical Pantone guide.
What color goes with #166DFF?
Its complement #A66A00 gives the strongest contrast. For something calmer, try its analogous neighbors, or its own tints and shades above.