I saw some Related topics that where not so helpful. Kindly let me know if there is an provision. The eye is getting strained in the Big screen.
Hello @Shadakshari C_R
Welcome to the community.
Atlassian does not provide a dark mode for their product. You would need to use a third party application or an extension for your browser that would apply dark mode.
If you are using Jira Server/Data Center, this app from the Atlassian Marketplace claims to provide a Dark Theme.
If you are using the Google Chrome browser, this extension claims to provide a dark mode for Jira.
There may be other extensions that also provide dark themes.