lineEdit->setStyleSheet("QLineEdit { color: red; }"); That’s it. This single line will turn the text red. QSS supports named colors (like "red", "blue", "transparent"), Hex codes ( #FF0000 ), and even RGB/RGBA functions ( rgb(255, 0, 0) ). The true power of QSS comes when you want to change the text color and the background simultaneously. For instance, creating a "Dark Mode" input field:
// Set text color when the widget is disabled palette.setColor(QPalette::Disabled, QPalette::Text, QColor(150, 150, 150)); qlineedit text color
However, if you want to style the text inside the line edit but not the placeholder, you might rely on QPalette for the placeholder and QSS for the text, but generally, QSS applies to the main text rendering. The true power of QSS comes when you
#include <QLineEdit> #include <QPalette> #include <QColor> // Assuming 'lineEdit' is your pointer to the QLineEdit widget QLineEdit* lineEdit = new QLineEdit(this); In modern Qt versions (Qt 5
lineEdit->setStyleSheet( "QLineEdit { " " background-color: #2b2b2b; " " color: #ffffff; " // White text " border: 1px solid #555; " " border-radius: 3px; " " padding: 5px; " "}" ); A common frustration with QLineEdit is that changing the main text color also changes the placeholder text color (the grey text shown when the field is empty). In modern Qt versions (Qt 5.12+), you can specifically target placeholder text using the placeholderText property in QSS, though the most reliable way to style it is usually via the color property combined with opacity, or by specific selectors if the style supports it.
// 2. Set the color for the 'Text' role // QColor(0, 0, 255) creates a Blue color palette.setColor(QPalette::Text, QColor(0, 0, 255));