Yes, when it makes sense for the product and audience. Dark mode is not a checkbox — it is a second surface that needs the same design discipline as the default theme. I design color tokens and contrast rules so both modes stay readable and consistent, then test common components to make sure nothing breaks when the palette inverts.

What I design for both modes

Color tokens and contrast

• Semantic roles for background, surface, text, border, and accent colors
• Contrast ratios checked against WCAG targets in both themes
• States like hover, focus, disabled, and error tested in each mode

Component coverage

• Tables, charts, forms, and navigation in real product density
• Data visualization colors that remain distinguishable in dark UI
• Modals, toasts, and overlays that do not blow out or disappear

When dark mode is optional

• UI still designed to look intentional in low-light contexts
• Screenshots and marketing assets planned for both backgrounds
• System preference support or manual toggle — depending on product needs

Done right, both modes feel like part of one system — not like light mode with inverted colors pasted on top.

See the full design scope on design services, or book a call to talk through whether dual-mode design fits your product.