Question 1

How To Convert Hex To Rgb?

Accepted Answer

Use the Color Converter above — enter your values and get instant results. This free online tool calculates how to convert hex to rgb without any download or signup required. Results update in real time as you type.

Question 2

Color Converter Hex Rgb Hsl?

Accepted Answer

Use the Color Converter above — enter your values and get instant results. This free online tool calculates color converter hex rgb hsl without any download or signup required. Results update in real time as you type.

Question 3

Which color format should I use in CSS?

Accepted Answer

For modern CSS, HSL is recommended for its intuitive nature — adjusting lightness and saturation is natural. CSS supports hsl(), rgb(), hex, and the newer oklch() and color() functions. For design systems and CSS variables, HSL makes it easy to create color scales by adjusting lightness while keeping the same hue and saturation.

Question 4

What are the different colour formats?

Accepted Answer

HEX (#RRGGBB): Most common for web and design tools. Compact and readable. #FF0000 = red. RGB (r,g,b): Used in CSS and design. Each channel 0–255. RGBA adds opacity (0–1). HSL (hue 0–360°, saturation 0–100%, lightness 0–100%): Most intuitive for humans — easiest for creating colour scales and accessibility adjustments. CMYK (cyan, magenta, yellow, black): Used in print and press. Screens use RGB; printers use CMYK.

Question 5

Why do colours look different on screen vs in print?

Accepted Answer

Screens use RGB (additive colour — mixing light). Printers use CMYK (subtractive — absorbing light). The RGB gamut is larger than CMYK — some vivid digital colours simply cannot be reproduced in print. If designing for print, work in CMYK mode from the start and check your print provider's ICC colour profile to avoid unexpected colour shifts when the job is printed.

Question 6

How do I choose accessible colour combinations?

Accepted Answer

WCAG 2.1 requires minimum contrast ratios: 4.5:1 for normal text, 3:1 for large text (18pt+) and UI components. Contrast ratio is calculated from the relative luminance of foreground and background colours. Common failures: grey text on white, yellow on white, light blue on white. High-contrast combinations: black on white (21:1), white on navy (17:1), black on yellow (19.4:1).

Question 7

How do I convert between HSL and RGB?

Accepted Answer

RGB → HSL: Normalise RGB to 0–1. L = (max+min)/2. If max=min: S=0, H=0 (achromatic). Otherwise: S = (max-min)/(1-|2L-1|). H depends on which channel is max. HSL → RGB: Use the piecewise function with chroma C = (1-|2L-1|)×S mapped across 6 hue segments. In practice use a library — the conversion math is error-prone by hand and this tool handles it instantly.

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