Convert colors between HEX, RGB, HSL, HSV, and CMYK formats
Real-time bidirectional color space calculation with live preview, shades and tints generator, WCAG accessibility contrast scoring, and code snippets for web and mobile frameworks.
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Color Space Engineering: HEX, RGB, HSL, HSV, and CMYK Explained
Colors in modern software development and graphic design exist across various mathematical representations. Understanding the distinctions between additive screen models and subtractive print models helps ensure consistent visual fidelity.
Compact Web Standard
Base-16 shorthand notation for RGB values. Uses 6 characters (e.g., #4F46E5) or 8 characters with an alpha opacity channel (#4F46E5FF). Universally accepted in CSS and HTML.
Additive Screen Optics
Represents light intensities of Red, Green, and Blue pixels from 0 to 255. When combined at maximum (255, 255, 255), they yield pure white light.
Human Perception Geometry
Cylindrical coordinates with Hue (0°-360°), Saturation (0%-100%), and Lightness/Value. Intuitive for creating harmonious palettes, tints, and shadows without changing color hue.
Physical Print Inks
Cyan, Magenta, Yellow, and Key (Black) inks used in physical offset printing. Inks subtract white light reflected from paper, making it distinct from digital sRGB monitors.
Frequently Asked Questions
How do I convert HEX to RGB?
Extract the two hexadecimal digits for each channel (RR, GG, BB) and parse them from base 16 into base 10 integers (0-255). For example, #4F converts to 79, #46 to 70, and #E5 to 229.
What is WCAG 2.1 Color Contrast?
WCAG defines relative luminance ratios between text and its background. Level AA requires a 4.5:1 ratio for regular text and 3:1 for large text. Level AAA requires 7.0:1 for regular text and 4.5:1 for large text.
Why does RGB to CMYK conversion shift slightly?
sRGB displays can emit vibrant neon greens, cyans, and magentas that exceed the color gamut physically reproducible with standard four-color printing inks on paper.
Is any color data uploaded to external servers?
No. In accordance with the ToolsAA privacy-first architecture, 100% of calculation, color parsing, and WCAG evaluation occurs strictly in your browser using pure client-side algorithms.
Zero Server Retention
All color conversions execute in memory inside the client browser. No user queries, brand palettes, or tokens are logged or transmitted anywhere.
Zero Latency Realtime Math
Instant sub-millisecond mathematical recalculation across HEX, RGB, HSL, HSV, and CMYK channels without network round-trips.
Full Spectrum Tooling
Includes comprehensive Tailwind CSS 50-950 ramp generator, color wheel geometric harmonies, and native system eyedropper support.