The hexadecimal color code #1b4e59 is a dark shade of cyan. In the RGB color model #1b4e59 is comprised of 10.59% red, 30.59% green and 34.9% blue. In the HSL color space #1b4e59 has a hue of 191° (degrees), 53% saturation and 23% lightness. This color has an approximate wavelength of 486.25 nm.
There is no must in art because art is free.
<p style="color: #1b4e59">…</p>
Painting is a means of self-enlightenment.
<p style="background-color: #1b4e59">…</p>
If I could say it in words there would be no reason to paint.
<p style="text-shadow: 0.1em 0.1em 0.15em #1b4e59">…</p>