serval ways for write css color
<style>
.txt {
color: rgb(255, 255, 0);
}
// or
.txt {
color: #eaeaea;
}
// or
.txt {
color: #f01; // Equivalent to #ff0011
}
// or
.txt {
color: red;
}
// or
.txt {
color: rgb(100%, 100%, 0%); //when we use rgb of percentage , 0 needs percent sign. In other case, 0 does not required units
}
</style>
<span class="txt">hello</span>