Current Color: #4A6FA5
Recent Colors
Color Code Basics
Color is an essential element in the design of websites and applications. Colors can be expressed in various formats, but the following three are most commonly used in web development and design.
- Hex Color Code: Written in the format
#RRGGBB, this is the most common notation used in CSS. The values for R (Red), G (Green), and B (Blue) are expressed as two-digit hexadecimal numbers ranging from 00 to FF. Examples:#FFFFFF(white),#000000(black),#4A6FA5(this tool's default). A shorthand form#RGBalso exists (e.g.,#F60is equivalent to#FF6600). - RGB (Red, Green, Blue): This model represents colors using combinations of the three primary colors of light: red, green, and blue. Each color intensity is specified as an integer from 0 to 255. Examples:
rgb(255, 255, 255)(white),rgb(0, 0, 0)(black),rgb(74, 111, 165)(this tool's default). There is also RGBA (rgba(R, G, B, A)), which adds an alpha channel for transparency. - HSV (Hue, Saturation, Value/Brightness): A more intuitive way to describe colors.
- Hue: The type of color, expressed as an angle from 0 to 360 degrees (0/360 degrees is red).
- Saturation: The vividness of the color, from 0 to 100% (0% is achromatic/gray).
- Value/Brightness: The brightness of the color, from 0 to 100% (0% is black).
These color code formats are used depending on the tool and purpose at hand. This conversion tool makes it easy to switch between different formats.
Frequently Asked Questions (FAQ)
How do I use this tool?
You can specify and convert colors in the following ways:
- Color Picker: Click on the square area in the upper left to visually select a color.
- Hex Input: Enter a value directly in #RRGGBB or #RGB format (e.g., #336699, #f00).
- RGB Input: Enter values from 0 to 255 in each R, G, B field.
- HSV Input: Enter values for H (0-360), S (0-100), V (0-100) in each field.
When you change any value, all other values and the preview update in real time. You can also click on a color in the "Recent Colors" history to reapply it.
What is a Hex color code?
A Hex (hexadecimal) color code is a widely used format in CSS for specifying colors on web pages. It consists of a "#" symbol followed by two-digit hexadecimal values (00-FF) for each of the three primary colors of light: Red, Green, and Blue. For example, #FF0000 represents red, #00FF00 represents green, and #0000FF represents blue. When each pair of digits is the same, you can use the shorthand form like #F60 (which is equivalent to #FF6600).
What are RGB values?
RGB stands for Red, Green, and Blue -- the three primary colors of light. It is an additive color model that represents colors by combining these three colors at varying intensities. Each color intensity is typically expressed as an integer from 0 to 255, where higher values mean a stronger presence of that color. For example, RGB(255, 0, 0) is pure red, RGB(0, 255, 0) is pure green, and RGB(0, 0, 255) is pure blue. RGB(0, 0, 0) is black, and RGB(255, 255, 255) is white. This is the fundamental model used by displays and other light-emitting devices.
What are HSV values? How is HSV different from HSL?
HSV is a color model that describes color using three components: Hue, Saturation, and Value (Brightness).
- Hue: The type of color (red, yellow, green, blue, etc.) expressed as an angle from 0 to 360 degrees.
- Saturation: The vividness of the color, from 0% (gray) to 100% (pure color).
- Value/Brightness: The brightness of the color, from 0% (black) to 100% (brightest).
HSV is considered closer to how humans perceive color, making it intuitive to adjust brightness or vividness based on a specific hue.
A similar model is HSL (Hue, Saturation, Lightness). While the concepts of Hue (H) and Saturation (S) are similar, HSL's Lightness goes from 0% (black) to 100% (white), with maximum saturation at 50%. In HSV, Value reaches 100% for pure colors. CSS supports the hsl() function, but which model to use depends on your needs. This tool currently supports HSV.
What is the CMYK color model? Can this tool convert to CMYK?
CMYK stands for Cyan, Magenta, Yellow, and Key (Black). It is a subtractive color model primarily used in printing. Unlike RGB (additive color), which is used for displays that emit light, CMYK creates colors by layering ink on paper.
This tool specializes in converting between RGB, Hex, and HSV -- the formats most commonly used on the web -- so it does not include direct CMYK conversion. While mathematical RGB-to-CMYK conversion is possible, accurate color reproduction depends on factors such as ink type, paper, and color profiles. For print-ready work, we recommend using professional design software (such as Adobe Illustrator or Photoshop) with the appropriate color profiles.
What should I know about web accessibility and color contrast?
Web accessibility ensures that everyone, including people with disabilities, can access and use web content. When it comes to color, the contrast ratio between background and foreground (text) colors is especially important. Low contrast can make text difficult to read for people with visual impairments or those viewing screens in bright environments.
The internationally recognized WCAG (Web Content Accessibility Guidelines) recommends a contrast ratio of at least 4.5:1 for normal text (below 18pt, or below 14pt bold) and at least 3:1 for large text (18pt and above, or 14pt bold and above) at Level AA.
When choosing colors, consider using a contrast checking tool alongside this converter to verify that your color combinations meet accessibility standards.
Why is color code conversion necessary? When is it useful?
Different color code formats are used across various fields such as web design, graphic design, app development, and data visualization.
- Web Development (CSS): Primarily uses Hex (#RRGGBB), rgb(), and hsl().
- Design Tools (Photoshop, Illustrator, Figma, etc.): Support multiple formats including RGB, HSV/HSB, HSL, and CMYK.
- Programming: Depending on the library or framework, colors may be specified as RGB values (0-255 or 0.0-1.0) or Hex.
For example, you might select a color using HSV in a design tool and then need to convert it to Hex or RGB for use in CSS. Or you may want to import a Hex code from an existing website's CSS into a design tool to fine-tune the color. In situations like these, this color code converter lets you work seamlessly across different formats.
This Color Code Converter is useful not only for the web but also for print materials such as flyers, posters, and brochures, as well as logo color design. At the design service AMIX | ASOBOAD, we offer brochure and pamphlet design tailored for actual printing, as well as logo design that represents your brand. From color planning to production, we provide one-stop consultation for all your design needs.