深蓝的英文：
dark blue

参考例句：

Thomas Hudson looked out at the flatness of the blue sea and the darker blue of the Gulf
托马斯?赫德森呆望着湛蓝的海面，海面水平如镜。在海湾那儿，都是深蓝一片了。

The sky was indigo blue,and a great many stars were shining.
天空一片深蓝，闪烁着点点繁星。

You can see a realistic eye or just a shape filled with indigo or purple colour.
你或许能看到一只逼真的眼睛，抑或是一个深蓝或紫色的图形。

It was the beginning of a day in June; the deep blue sky unsullied by a cloud, and teeming with brilliant light
那是六月的一天清晨，深蓝的天空洁净无云，充满着灿烂的光辉。

dark是什么意思：
n. 黑暗，暗处，无知，模糊，暧昧
adj.（颜色）深的；（皮肤等）微黑的，邪恶的，坏的，无知的，蒙昧的

It was getting dark.
天色渐暗。

It was dark and eerie.
里面又漆黑又可怕。

That was a shot in the dark.
这支箭是瞎放的。

sitting in a dark corner; a dark day; dark shadows; the theater is dark on Mondays; dark as the inside of a black cat.
坐在黑暗的角落；黑暗的日子；黑暗的阴影；这家戏院星期一不开门；像在厄运里面一样黑暗。

A dark brown dog is barking in the dark park.
一只深棕色的狗在黑暗的公园里叫着。

blue是什么意思：
n. 蓝色；蓝颜料；女学者
adj. 蓝色的；忧郁的；有学问的
v. 使成蓝色；变成蓝色；输掉，花掉

the man in Blue
穿蓝色衣服的那个人

Out of the Blue
从天上掉下来

I like blue flag.
我喜欢蓝色鸢尾。

She has blue eyes.
她长着一双蓝眼睛。

R Alexandria blue
亚历山大蓝(亮蓝色颜料,含有硅酸铜,古代埃及用于壁画)