Base64 Encode: Useful Encoding, Not Encryption
Base64 makes binary safe for text channels—it does not hide secrets. Learn correct use with CalcoWorks Base64 Encode.
Last updated · CalcoWorks
Overview
Design tokens fail when that blue is three different hex codes across Figma, CSS, and marketing PDFs. CalcoWorks Color Picker helps you select and read colour values so engineers and designers share the same hex and RGB language.
Front-end developers grab brand colours for CSS variables. Marketers match CTA buttons to decks. Students learn hex notation. Pair with Image Effects when adjusting photos toward a palette, and with QR and print workflows where contrast matters for scans.
Colour appearance shifts by display calibration — pickers report values, not perceptual guarantees on every monitor. For accessibility, check contrast ratios with dedicated auditors beyond a simple pick.
Name tokens by role such as color-primary and store hex in the design system, not in chat folklore. Check contrast for body text before shipping colourful marketing blocks. Soft-proof brand colours on the devices your customers use when the brand is strict. When handing off, include contrast ratios for primary text-on-colour pairs next to the hex.
Store tokens with semantic names and contrast notes so engineering does not inherit mysterious hex soup. When a rebrand lands, replace tokens deliberately rather than hunting hard-coded shades across repositories.
Export a small token JSON beside Figma so engineers do not re-type hex from screenshots. Screenshot colour pickers introduce rounding drift that accumulates into off-brand interfaces after a few sprints.
Pick once, tokenise, then reuse. Ad-hoc hex values across CSS modules create brand drift that no amount of marketing complaints can reverse without a cleanup project. For charts, verify series colours under greyscale and colour-blind simulations before calling the palette done. Record light and dark theme pairs together so night mode does not inherit accidental low-contrast leftovers from a daytime mock. Ship tokens through pull request review the same way you review copy so a late palette change cannot land unnoticed on a Friday deploy.
Example 1
Primary brand hex copied into root variables.
Example 2
Button colour aligned to marketing PDF swatch.
Example 3
Distinct hexes chosen for three data series.
Example 4
Exploring a darker accent for night mode.
Open Color Picker
Open Developer Tools then Color Picker.
Choose a colour
Use the picker UI to select a swatch.
Read values
Copy hex or RGB as displayed.
Apply in CSS
Paste into variables or utilities.
Check contrast
Verify text legibility with an accessibility checker.
Share tokens
Document the agreed hex in your design system.
Recheck on devices
Preview on target screens when brand-critical.
Browse calculators, PDF tools, developer tools, and image tools.
Base64 makes binary safe for text channels—it does not hide secrets. Learn correct use with CalcoWorks Base64 Encode.
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Pick colors and convert between HEX, RGB, and HSL formats
HEX
#3B82F6
RGB
rgb(59, 130, 246)
HSL
hsl(217, 91%, 60%)
CSS var
--color: #3b82f6;
Light variant
Dark variant