hsl

Farbtastic convert HSL back to RGB or Hex

陌路散爱 提交于 2019-11-29 17:29:57
Edit: Posting Solution I wanted to create color swatches based on the color chosen in Farbtastic. I did my calculations on the HSL value, because it's easier and produces better results. After getting the HSL value from Farbtastic, I added brightness to create a new color. The new color is in HSL format, and I need to switch it back to RGB or Hex, in order to display it and save it for use later. Some browsers display HSL, but I have no faith that all mobile browsers etc will do so. The problem was to convert variable 'newcolor' back to RGB or Hex, once the calculation was done. // collect

RGB to HSL conversion

纵饮孤独 提交于 2019-11-28 18:44:13
I'm creating a Color Picker tool and for the HSL slider, I need to be able to convert RGB to HSL. When I searched SO for a way to do the conversion, I found this question HSL to RGB color conversion . While it provides a function to do conversion from RGB to HSL, I see no explanation to what's really going on in the calculation. To understand it better, I've read the HSL and HSV on Wikipedia. Later, I've rewritten the function from the "HSL to RGB color conversion" using the calculations from the "HSL and HSV" page. I'm stuck at the calculation of hue if the R is the max value. See the

HSB vs HSL vs HSV

一笑奈何 提交于 2019-11-28 18:13:34
I am making a Color class as a part of a very basic graphics API in c++. So I decided to take a look at Microsoft's .NET framework and noticed that their Color class has functions for HSB. Then I started a research to determine whether I should provide HSB, HSL or HSV or ALL of them in my class. So, I have 3 questions on HSB, HSL, HSV: Is HSB same as HSL? If not, why isn't there an HSBL or even HSBLV? I find many different methods of calculating these values, can someone show me the FASTEST ones? JoseV Is HSB same as HSL? No, HSB is the same as HSV but HSL is different. All these are used as a

Farbtastic convert HSL back to RGB or Hex

て烟熏妆下的殇ゞ 提交于 2019-11-28 12:54:16
问题 Edit: Posting Solution I wanted to create color swatches based on the color chosen in Farbtastic. I did my calculations on the HSL value, because it's easier and produces better results. After getting the HSL value from Farbtastic, I added brightness to create a new color. The new color is in HSL format, and I need to switch it back to RGB or Hex, in order to display it and save it for use later. Some browsers display HSL, but I have no faith that all mobile browsers etc will do so. The

RGB to HSL and back, calculation problems

对着背影说爱祢 提交于 2019-11-28 10:12:24
I'm trying to convert RGB to HSL and I also want to convert from HSL to RGB, I have written a class for it but if I do RGB->HSL->RGB to try if it works I get a different value. Example case: if you create a HSLColor object by doing HSLColor MyTestConversion = HSLColor.FromRGB(Colors.Green); and then do Color ExpectedGreenHere = MyTestConversion.ToRGB() you get a different color than Colors.Green while it was the original input so something goes wrong.. This is the code i'm using: public class HSLColor { public float Hue; public float Saturation; public float Luminosity; public HSLColor(float H

Convert HSB/HSV color to HSL

Deadly 提交于 2019-11-27 14:46:20
Ho do I convert HSB color to HSL? Photoshop shows HSB color in its color picker. HSL color can be used in CSS. I tried this JS: function hsb2hsl(h, s, b) { return { h: h, s: s, l: b-s/2 } } But hsb2hsl(0, 100, 50).l == 0 instead of 25 Update: Can I do that without converting HSB → RGB → HSL? I'm afraid my Javascript knowledge is lacking, but you should be able to infer the conversion from http://ariya.blogspot.com/2008/07/converting-between-hsl-and-hsv.html Let's picture what actually are H SB (V), H SL , and how are constructed: Hue color value goes from 0 to 360 degrees (where 0 is red ) for

Why doesn't hue rotation by +180deg and -180deg yield the original color?

旧巷老猫 提交于 2019-11-27 08:27:35
By reading HSL/HSV color theory, I get the impression that hue component is a cyclical attribute that repeats every 360 degrees and can be changed independently of saturation and lightness/value. Correct me if I am wrong, but these statements logically follow the previous definition: Rotating hue by 360 degrees yields the same color Rotating hue by 180 degrees twice yields the original color Rotating hue by 180 degrees followed by -180 degrees yields the original color However, only the option 1 is correct. Rotating hue 4 times by +90 degrees yields a color that isn't even remotely similar to

how to use HSL in Asp.net [closed]

删除回忆录丶 提交于 2019-11-26 22:40:32
What tools are used for working with HSL colors in .net? The color struct provides three methods: GetHue, GetSaturation and GetBrightness. Bob Powell wrote an interesting piece on this several years ago. Bizarre historical note -- "HSL" (and the related "HSV") are one of the many things originating from Xerox's Palo Alto Research Center (PARC) in the 70's, courtesy of Alvy Ray Smith . Brian Gillespie This ColorRGB class provides ways to get and set HSL, along with implicit conversions to and from System.Drawing.Color. It's based on an excellent example from GeekMonkey.com . using System; using

Why doesn't this Javascript RGB to HSL code work?

喜夏-厌秋 提交于 2019-11-26 20:47:21
I found this RGB to HSL script over at http://www.mjijackson.com/2008/02/rgb-to-hsl-and-rgb-to-hsv-color-model-conversion-algorithms-in-javascript . I can't find any other small decent ones. The issue is that this code doesn't even really work. Would anybody know why? (I don't know a bit of color math, but maybe it's returning the complementary?) function rgbToHsl(r, g, b){ r /= 255, g /= 255, b /= 255; var max = Math.max(r, g, b), min = Math.min(r, g, b); var h, s, l = (max + min) / 2; if(max == min){ h = s = 0; // achromatic }else{ var d = max - min; s = l > 0.5 ? d / (2 - max - min) : d /

Convert HSB/HSV color to HSL

邮差的信 提交于 2019-11-26 16:45:51
问题 Ho do I convert HSB color to HSL? Photoshop shows HSB color in its color picker. HSL color can be used in CSS. I tried this JS: function hsb2hsl(h, s, b) { return { h: h, s: s, l: b-s/2 } } But hsb2hsl(0, 100, 50).l == 0 instead of 25 Update: Can I do that without converting HSB → RGB → HSL? 回答1: I'm afraid my Javascript knowledge is lacking, but you should be able to infer the conversion from http://ariya.blogspot.com/2008/07/converting-between-hsl-and-hsv.html 回答2: Let's picture what