La gestión del color mantiene la saturación.

Because gestión is a feminine noun in Spanish, so it takes the feminine singular article la.

• la gestión = the management
• una gestión = a management / a procedure / an administrative action depending on context

A useful pattern:

• nouns ending in -ción are usually feminine
  
  • la saturación
  • la información
  • la configuración

So in this sentence, both gestión and saturación are feminine.

Del is the contraction of de + el.

• de = of
• el = the
• de + el = del

So:

• la gestión del color = the management of the color / more naturally color management

This contraction happens whenever de is followed by el, except when el is part of a proper name.

Examples:

• el libro del profesor = the teacher’s book
• la puerta del coche = the car door

Because here color is a specific noun phrase: the color as a concept within color management.

• gestión del color is the standard technical expression for color management
• de color often means something more like colored or in color, depending on context

Compare:

• impresión en color = color printing
• gestión del color = color management

So del color is not random; it is the natural fixed phrase in this context.

Spanish often uses the definite article where English does not, especially with general or abstract nouns.

So:

• mantiene la saturación literally = maintains the saturation
• in natural English, this may simply be maintains saturation

Spanish is more comfortable than English with using articles in these cases.

Other examples:

• me gusta la música = I like music
• estudia la historia = he/she studies history
• la paciencia es importante = patience is important

Mantiene is the third person singular present tense of the verb mantener.

So it means:

• he maintains
• she maintains
• it maintains
• you maintain (formal singular: usted)

In this sentence, the subject is La gestión del color, which is singular, so the verb must also be singular:

• La gestión del color mantiene...

A few forms of mantener:

• yo mantengo
• tú mantienes
• él/ella/usted mantiene
• nosotros mantenemos
• vosotros mantenéis
• ellos/ellas/ustedes mantienen

Because the whole subject is one unit: La gestión del color.

The main noun is gestión, and it is singular.
del color just adds extra information about what kind of management it is.

So the structure is:

• La gestión = main noun phrase
• del color = modifier
• mantiene = singular verb

A similar example:

• La calidad del producto importa.
  • The quality of the product matters.

Even though producto is also singular and appears nearby, the verb agrees with calidad, the main subject noun.

Yes. In technical, design, printing, photography, and display contexts, gestión del color is the standard way to say color management.

It is a set phrase, so learners should try to remember it as a chunk:

• la gestión del color = color management

This is often more useful than translating word by word.

Yes. Mantener can often mean to maintain, to keep, or to preserve, depending on context.

So mantiene la saturación could be understood as:

• maintains the saturation
• keeps the saturation
• preserves saturation

The best English choice depends on the context:

• technical/manual language often prefers maintains
• more everyday English might prefer keeps

In standard Peninsular Spanish, approximately:

la hes-TYON del ko-LOR man-TYE-ne la sa-tu-ra-THYON

A few key pronunciation points:

• gestión: the g before e sounds like a strong Spanish j
• del: short and light
• color: stress on the last syllable, co-LOR
• mantiene: stress on tie
• saturación: stress on the final syllable -ción

In much of Spain, z is pronounced like the th in thin, so:

• saturación has a th sound: sa-tu-ra-THYON

Because Spanish often omits subject pronouns when the verb form already makes the subject clear.

English needs:

• Color management maintains saturation.

Spanish can simply say:

• La gestión del color mantiene la saturación.

There is no need to add ella or anything similar, because the subject is already stated, and the verb form matches it.

This is very normal in Spanish:

• El programa funciona. = The program works.
• La cámara graba vídeo. = The camera records video.

Yes, but the original order is the most neutral and natural:

• La gestión del color mantiene la saturación.

You could change the order for emphasis, but it would usually sound less neutral or more marked. For example:

• La saturación la mantiene la gestión del color.

This puts emphasis on la saturación, but it is less straightforward and less likely in normal explanatory or technical writing.

So for learners, the original sentence is the best pattern to follow: subject + verb + object.