Here is a sample of the same design -one with good contrast, one with bad contrast.

这里有一个对于同一个设计的示例——一个设计的对比很好，另一个就很差。

youdao

The first consideration is contrast: links have to be dark (or light) enough to contrast with the background color.

第一要义就是差异(对比)：链接要足够暗(或者亮)以和背景色相对照。

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Monet said: “Color owes its brightness to force of contrast rather than to its inherent qualities … primary colors look brightest when they are brought into contrast with their complementaries.

莫奈说过：“色彩的亮度，是源于对比的力度，而非其固有特质……原色在与其补色对比时，看起来最亮。”

youdao

And actually when you contrast that with most retailers, that follows the same pattern."

VOA: special.2009.12.25

By contrast, he describes differentiation as a process whereby Israel came to reject its Canaanite roots, and create a separate identity.

相反，他认为保留差异的过程,是因为以色列人拒绝迦南根源，创建独立身份。

耶鲁公开课 - 旧约导论课程节选

You could contrast the roguish and fanciful, clearly done by hand, title of the magazine, with that machine-type Blast.

你们可以把这些明显手写的，无赖而稀奇的标题，和机械化的“暴风“相对比。

耶鲁公开课 - 现代诗歌课程节选

Super Contrast Booster maximizes contrast and brightness by enhancing parts of the screen where necessary.

ENGADGET: LG's 55-inch OLED HDTV ships in Korea next week, has 100 pre-orders so far

The course choices were given in a small, low-contrast font (high-difficulty condition) or a larger, high contrast font (low-difficulty condition).

FORBES: Decision Quicksand

The flagship 8-Series features Super Bright, an intelligent contrast engine and a brighter panel to create a brighter picture and extraordinary contrast.

ENGADGET: Sharp AQUOS Ultra HD, 1080p HDTVs eyes-on HD