Question 1

What is the difference between HEX, RGB, and HSL color formats?

Accepted Answer

HEX uses a six-digit hexadecimal code (e.g. #FF5733) to represent red, green, and blue channels. RGB specifies each channel as a number from 0 to 255. HSL describes color using Hue (0-360 degrees), Saturation (0-100%), and Lightness (0-100%), making it more intuitive for designers to adjust colors.

Question 2

What is OKLCH and why should I use it?

Accepted Answer

OKLCH is a perceptually uniform color space supported in modern CSS. It uses Lightness, Chroma, and Hue to define colors in a way that matches how humans perceive color differences. It produces smoother gradients and more predictable color adjustments compared to HSL.

Question 3

How does the WCAG contrast checker work?

Accepted Answer

The WCAG contrast checker calculates the luminance ratio between a foreground and background color. A ratio of at least 4.5:1 is required for normal text (AA), 3:1 for large text (AA), and 7:1 for enhanced contrast (AAA). This ensures text remains readable for people with visual impairments.

Question 4

How do I find the closest Tailwind CSS class for a custom color?

Accepted Answer

Our Tailwind class finder compares your chosen color against every color in the default Tailwind CSS palette. It calculates the perceptual distance and returns the closest matching utility class, such as bg-blue-500 or text-emerald-600, so you can use Tailwind without custom configuration.

Question 5

What is CMYK and how does it relate to RGB?

Accepted Answer

CMYK stands for Cyan, Magenta, Yellow, and Key (black) and is used in print design. RGB is additive (light-based) while CMYK is subtractive (ink-based). Converting between them is an approximation because they represent different color gamuts; screen colors may not reproduce exactly in print.

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