WOLFRAM

Wolfram Language & System Documentation Center
Wolfram Language Home Page »

Darker
✖
Darker

✖
Darker[color]

represents a darker version of the specified color.

✖
Darker[color,f]

represents a version of the specified color darkened by a fraction f.

✖
Darker[image,…]

gives a darker version of an image.

✖
Darker[video,…]

gives a version of a video with darker frames.

Details

  • Darker can be used to create a darker version of a color or an image.
  • Darker[color,1] gives black. »
  • Darker[color,0] gives color. »
  • Darker[color] is equivalent to Darker[color,1/3]. »
  • Darker[color,f] for values of f outside the range 0 to 1 is clipped.
  • Darker[image] works with 2D as well as 3D images.
  • Darker[{col1,col2,…},…] gives darker versions of each of the coli. »
  • When applied to color, Darker always returns an RGBColor.
  • When applied to color images, Darker always returns an RGB image.
  • Darker does not affect the opacity of a color or an image.

Examples

open allclose all

Basic Examples  (3)Summary of the most common use cases

Darker version of colors:

In[1]:=1
✖
https://wolfram.com/xid/0c12z3e-cmxvjt
Out[1]=1
In[2]:=2
✖
https://wolfram.com/xid/0c12z3e-trwc4
Out[2]=2

Specify how much the color should be darkened by using a fraction:

In[1]:=1
✖
https://wolfram.com/xid/0c12z3e-bryttf
Out[1]=1

Darker version of an image:

In[1]:=1
✖
https://wolfram.com/xid/0c12z3e-shmq3f
Out[1]=1

Scope  (9)Survey of the scope of standard use cases

Data  (6)

Darker version of a color:

In[3]:=3
✖
https://wolfram.com/xid/0c12z3e-11ivlk
Out[3]=3

Darker version of a 2D grayscale image:

In[1]:=1
✖
https://wolfram.com/xid/0c12z3e-fs02y
Out[1]=1

Darker version of an image:

In[1]:=1
✖
https://wolfram.com/xid/0c12z3e-gzdj6x
Out[1]=1

Darker video:

In[1]:=1
✖
https://wolfram.com/xid/0c12z3e-hxov8p
Out[1]=1

Darker version of a 3D image:

In[1]:=1
✖
https://wolfram.com/xid/0c12z3e-5t13y
Out[1]=1

Darker automatically threads over colors:

In[1]:=1
✖
https://wolfram.com/xid/0c12z3e-lptmuo
Out[1]=1

Parameters  (3)

The default darkening fraction is :

In[1]:=1
✖
https://wolfram.com/xid/0c12z3e-gx3kwx
Out[1]=1
In[1]:=1
✖
https://wolfram.com/xid/0c12z3e-b0cizi
Out[1]=1

Specify different darkening fractions:

In[3]:=3
✖
https://wolfram.com/xid/0c12z3e-8ohl5a
Out[3]=3

With a darkening fraction of zero, the color is unchanged:

In[1]:=1
✖
https://wolfram.com/xid/0c12z3e-b6oabn
Out[1]=1
In[2]:=2
✖
https://wolfram.com/xid/0c12z3e-cmoabu
Out[2]=2

With a darkening fraction of one, the color becomes black:

In[1]:=1
✖
https://wolfram.com/xid/0c12z3e-hfxv6l
Out[1]=1
In[2]:=2
✖
https://wolfram.com/xid/0c12z3e-mvyfi9
Out[2]=2

Applications  (3)Sample problems that can be solved with this function

Use Darker to construct ColorFunction for plots:

In[1]:=1
✖
https://wolfram.com/xid/0c12z3e-cm5hxe
Out[1]=1
In[2]:=2
✖
https://wolfram.com/xid/0c12z3e-wcjr7
Out[2]=2

Use Darker and Lighter values of a particular hue as a color function:

In[1]:=1
✖
https://wolfram.com/xid/0c12z3e-g6vtb9
Out[1]=1

Detect the face in an image and highlight it by darkening the background:

In[1]:=1
✖
https://wolfram.com/xid/0c12z3e-y667go
In[2]:=2
✖
https://wolfram.com/xid/0c12z3e-utg96h

Combine the darkened background with the original:

In[3]:=3
✖
https://wolfram.com/xid/0c12z3e-09isd2
Out[3]=3

Properties & Relations  (5)Properties of the function, and connections to other functions

Darker of a color is always returned as an RGBColor:

In[1]:=1
✖
https://wolfram.com/xid/0c12z3e-ryld4n

The opacity value is unaffected by Darker:

In[1]:=1
✖
https://wolfram.com/xid/0c12z3e-x0zkdl

Darker is a special case of Blend:

In[1]:=1
✖
https://wolfram.com/xid/0c12z3e-dd70t7
In[2]:=2
✖
https://wolfram.com/xid/0c12z3e-4blxs
Out[2]=2

Darker and Lighter are not commutative:

In[1]:=1
✖
https://wolfram.com/xid/0c12z3e-ne1849
Out[1]=1
In[2]:=2
✖
https://wolfram.com/xid/0c12z3e-bsawy3
Out[2]=2

Darker for images is a special case of ImageAdjust or Blend:

In[1]:=1
✖
https://wolfram.com/xid/0c12z3e-2oo9is
Out[1]=1

Possible Issues  (2)Common pitfalls and unexpected behavior

Values outside of the 0, 1 range will be clipped:

In[11]:=11
✖
https://wolfram.com/xid/0c12z3e-qgvk87
Out[11]=11

Some colors may look greenish during the darkening:

In[1]:=1
✖
https://wolfram.com/xid/0c12z3e-ver7d
Out[1]=1

Interactive Examples  (1)Examples with interactive outputs

Observe the changing chromaticity of a color image as the image is made darker:

In[2]:=2
✖
https://wolfram.com/xid/0c12z3e-jgasvg
Out[2]=2

Neat Examples  (1)Surprising or curious use cases

Tilted bumpy texture:

In[1]:=1
✖
https://wolfram.com/xid/0c12z3e-hj17lu
Out[1]=1
Wolfram Research (2007), Darker, Wolfram Language function, https://reference.wolfram.com/language/ref/Darker.html (updated 2021).
✖
Wolfram Research (2007), Darker, Wolfram Language function, https://reference.wolfram.com/language/ref/Darker.html (updated 2021).

Text

Wolfram Research (2007), Darker, Wolfram Language function, https://reference.wolfram.com/language/ref/Darker.html (updated 2021).

✖
Wolfram Research (2007), Darker, Wolfram Language function, https://reference.wolfram.com/language/ref/Darker.html (updated 2021).

CMS

Wolfram Language. 2007. "Darker." Wolfram Language & System Documentation Center. Wolfram Research. Last Modified 2021. https://reference.wolfram.com/language/ref/Darker.html.

✖
Wolfram Language. 2007. "Darker." Wolfram Language & System Documentation Center. Wolfram Research. Last Modified 2021. https://reference.wolfram.com/language/ref/Darker.html.

APA

Wolfram Language. (2007). Darker. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/Darker.html

✖
Wolfram Language. (2007). Darker. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/Darker.html

BibTeX

@misc{reference.wolfram_2025_darker, author="Wolfram Research", title="{Darker}", year="2021", howpublished="\url{https://reference.wolfram.com/language/ref/Darker.html}", note=[Accessed: 24-April-2025 ]}

✖
@misc{reference.wolfram_2025_darker, author="Wolfram Research", title="{Darker}", year="2021", howpublished="\url{https://reference.wolfram.com/language/ref/Darker.html}", note=[Accessed: 24-April-2025 ]}

BibLaTeX

@online{reference.wolfram_2025_darker, organization={Wolfram Research}, title={Darker}, year={2021}, url={https://reference.wolfram.com/language/ref/Darker.html}, note=[Accessed: 24-April-2025 ]}

✖
@online{reference.wolfram_2025_darker, organization={Wolfram Research}, title={Darker}, year={2021}, url={https://reference.wolfram.com/language/ref/Darker.html}, note=[Accessed: 24-April-2025 ]}