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I use the excellent rainbow-mode to highlight colors in CSS files.

css with rainbow-mode

However, this assumes I know what color I want. Are there any color pickers that I can use for CSS editing inside Emacs? Ideally, I'd really like something where I can make colors slightly darker/brighter/redder/greener, like the Firefox color picker:

firefox color picker

Alternatively, I've noticed customize-face offers a color picker from a set of 548 colors. Can I use this for CSS?

customize-face color picker

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  • 3
    I can't resist quoting an exchange that dates back to the early days of Emacs: "Master, does Emacs have buddha-nature?" "... I can't see why not; it has everything else."
    – keshlam
    Commented Dec 20, 2014 at 22:24
  • 1
    Thanks for bringing up rainbow-mode! I was looking for just this feature and couldn't remember which package it was in.
    – wdkrnls
    Commented Jan 11, 2015 at 20:11

4 Answers 4

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20

Have a look at helm-colors. It presents the colors exactly as in your screenshot and seems to be using a similar or even the same palette.

To insert a color name into the current buffer, press C-c n (runs the action Insert Name).

To insert the hex value of a color, press C-c r (run the action Insert RGB).

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  • 3
    I second helm-colors. Here is a demo for anyone interests in how it looks like. You can select a color and insert it right into your editing buffers.
    – Tu Do
    Commented Dec 20, 2014 at 15:27
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    helm-colors is excellent, but it doesn't seem to replace the at point, nor even insert in the buffer. Ideally I'd like something that supported arbitrary colors.
    – Wilfred Hughes
    Commented Dec 20, 2014 at 16:26
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    @WilfredHughes It does have. You need to look at the action menu, by pressing TAB (the default key binding, use yours if you bind to something else). See my helm-colors section in my guide.
    – Tu Do
    Commented Dec 20, 2014 at 16:40
  • 2
    If you want to insert a color with its hex value, press C-c r.
    – Tu Do
    Commented Dec 20, 2014 at 16:46
16

  • Library Palette (palette.el) gives you a general WYSIWYG color editor/picker, which lets you explore and modify colors using RGB and HSV values, including incrementally. It looks like what you show in your second image.

  • Library Do Re Mi (doremi.el, doremi-cmd.el, doremi-frm.el) lets you modify colors used in Emacs incrementally: "direct manipulation".

  • Library Facemenu+ (facemenu+.el) lets you use the color palette (#1) to change colors used in Emacs. It enhances standard library facemenu.el, things like list-colors-display and list-faces-display (which look similar to your 3rd image).

  • Library Icicles lets you choose and manipulate colors and faces incrementally, manipulating RGB, HSV, etc. and sorting possible choices in many ways (e.g. combining color-component strengths).

(You can get the libraries mentioned here from MELPA, and the Lisp files contain the full documentation (but without images).)

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7

How about:

(defun my-insert-color-hex (&optional arg)
  "Select a color and insert its 24-bit hexadecimal RGB format.

With prefix argument \\[universal-argument] insert the 48-bit value."
  (interactive "*P")
  (let ((buf (current-buffer)))
    (list-colors-display
     nil nil `(lambda (name)
                (interactive)
                (quit-window)
                (with-current-buffer ,buf
                  (insert (apply #'color-rgb-to-hex
                                 (nconc (color-name-to-rgb name)
                                        (unless (consp ',arg)
                                          (list (or ,arg 2)))))))))))
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0

Have a look at emacsfodder/kurecolor.

  • convert colors between different formats
    • #RRGGBB(AA) hex colors to/from CSS rgb()/rgba()
    • XCode colorLiteral to/from hex colors
    • rgb to/from hsv
  • interactive incremental step adjust hue,sat,brightness on a single color at point
  • adjust or set hue,sat,brightness on all colors found in a region/buffer (from point)
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