Color Picker & Converter - HEX, RGB, HSL, HSV, CMYK

An interactive color picker tool to select and convert between HEX, RGB, HSL, HSV, and CMYK formats. Includes color theory guidance, copy shortcuts, and accessibility references.

Hue
Saturation
Value
Alpha

How to Use the Color Picker & Converter

Follow the steps below to craft the exact color you need and copy it in your preferred format.

  1. Select a base color with the visual picker, or type a value directly into the HEX, RGB, HSL, or HSV fields.
  2. Fine-tune hue, saturation, value, or alpha with the sliders or numeric inputs to preview lighter or transparent variations.
  3. Watch the results column update instantly with every format so you can cross-check HEX, RGBA, HSLA, HSVA, and CMYK.
  4. Use the copy buttons to grab any value and paste it directly into your stylesheet, design tool, or collateral.

Why use this calculator

Full original guide (expanded)

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Formulas
Formula (extracted LaTeX)
\[S = \begin{cases} 0, & \text{if } \Delta = 0 \\ \frac{\Delta}{1 - |2L - 1|}, & \text{if } \Delta \ne 0 \end{cases}\]
S = \begin{cases} 0, & \text{if } \Delta = 0 \\ \frac{\Delta}{1 - |2L - 1|}, & \text{if } \Delta \ne 0 \end{cases}
Formula (extracted LaTeX)
\[H = 60^\circ \times \begin{cases} \text{undefined}, & \text{if } \Delta = 0 \\ (\frac{G' - B'}{\Delta}) \mod 6, & \text{if } C_{\max} = R' \\ (\frac{B' - R'}{\Delta} + 2), & \text{if } C_{\max} = G' \\ (\frac{R' - G'}{\Delta} + 4), & \text{if } C_{\max} = B' \end{cases}\]
H = 60^\circ \times \begin{cases} \text{undefined}, & \text{if } \Delta = 0 \\ (\frac{G' - B'}{\Delta}) \mod 6, & \text{if } C_{\max} = R' \\ (\frac{B' - R'}{\Delta} + 2), & \text{if } C_{\max} = G' \\ (\frac{R' - G'}{\Delta} + 4), & \text{if } C_{\max} = B' \end{cases}
Formula (extracted LaTeX)
\[S = \begin{cases} 0, & \text{if } V = 0 \\ \frac{\Delta}{V}, & \text{if } V \ne 0 \end{cases}\]
S = \begin{cases} 0, & \text{if } V = 0 \\ \frac{\Delta}{V}, & \text{if } V \ne 0 \end{cases}
Variables and units
  • No variables provided in audit spec.
Version 1.5.0
Citations
Changelog

0.1.0-draft · 2026-01-19

  • Initial audit spec draft generated from HTML extraction (review required).
  • Verify formulas match the calculator engine and convert any text-only formulas to LaTeX.
  • Confirm sources are authoritative and relevant to the calculator methodology.
Verified by Ugo Candido on 2026-01-19 · LinkedIn