jss how to change opacity for a color
Alternatively, you can use the fade function provided in Material UI Next.
import {fade} from 'material-ui/styles/colorManipulator';
const theme = createMuiTheme({
overrides: {
MuiButton: {
root: {
boxShadow: `0 4px 8px 0 ${fade(defaultTheme.palette.primary[500], 0.18)}`,
}
},
}
});
export default theme;
Here's how it's working : https://github.com/mui-org/material-ui/blob/v1-beta/src/styles/colorManipulator.js#L157-L164
Another solution could be to use similar color functions from https://github.com/styled-components/polished
I found a solution using
backgroundColor: theme.utils.rgba(theme.axColor.black, 0.7),
Material UI has a colorManipulator
utility file, which includes an alpha
function:
import { alpha } from '@material-ui/core/styles/colorManipulator';
/**
* Sets the absolute transparency of a color.
* Any existing alpha values are overwritten.
* @param {string} color - CSS color, i.e. one of: #nnn, #nnnnnn, rgb(), rgba(), hsl(), hsla(), color()
* @param {number} value - value to set the alpha channel to in the range 0 - 1
* @returns {string} A CSS color string. Hex input values are returned as rgb
*/
{
backgroundColor: alpha(theme.colors.red, 0.5)
}
For Mui v5:
import { alpha } from "@mui/material";
Alternatively, you can add the color library from npm for color manipulation:
import Color from 'color';
{
backgroundColor: Color(theme.colors.red).alpha(0.5).string()
}
Assuming you don't already have the alpha channel defined in the color, you can also do:
backgroundColor: theme.colors.red + '00'
This will set alpha channel to 0, thus transparent. You can append any value between '00'
to 'ff'