#Ikea Kajplats

1 messages · Page 1 of 1 (latest)

lapis fern
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Hey, so i've started my home assistant journey around 2 weeks ago. I had 2 Ikea tradfri bulbs, connected them with the tradfri remote through home assistant and everything worked perfectly. Made a helper script to change the colors, my favorite color_name is darkorange for the tradfri lamps.

Now i got the kajplats and added them through matter server. added them to the light group and obviously tried to use the same color_name for them.
The color is WAY off, it's more like a yellow. I changed the rgb color for the kajplats to be 255,80,0 and that seemed close to the tradfri's in "darkorange". When i use the same rgb value on the tradfri's they're almost red.

So basically, this sucks. Does anyone have the same issue? Is it the light bulb or am I doing something wrong?

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I by the way also tried xy_colors but the color just seems off

vocal cosmos
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the older zigbee tradfri bulbs are known to have quite limited color support - they're particularly bad at greens and blue-greens.

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it's possible that the newer bulb is more accurate, and the older bulb simply can't reproduce the desired color :(

lapis fern
vocal cosmos
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lets see. darkorange is RGBColor(255, 140, 0) - just checked on the tradfri color bulb i have and it looks a lot more red than it's supposed to be.

lapis fern
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yeah but the kajplats is basically yellow when i use this rgb value. so is the bulb just bad or am i doing something wrong

vocal cosmos
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hmm, but my nanoleaf bulb set to the same color looks more yellow than it's supposed to be

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unfortunately, different smart bulbs tend not be very consistent in colour reproduction. If you want uniform colors in a room I'd recommend sticking to a single brand and series of bulbs

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if you find a colour that's a fairly close match on the new bulbs, you could consider doing something like a scene that sets one color on the tradfri bulbs and a different color on the kajplats bulbs such that they match.

lapis fern
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and just figure out the rgb colors that i like i guess?

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makes sense i guess, thanks!

vocal cosmos
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i don't have a whole lot of color bulbs to compare, but it sounds like my nanoleaf is doing the same thing as your kajplats where that color looks a bit more yellow than it should.

lapis fern
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hmm alr. i’ll figure something out then

vocal cosmos
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Try using this XY color on both bulbs: [0.573, 0.381] - it might be close enough on both bulbs?

lapis fern
vocal cosmos
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i don't have a whole lot of rgb lights, just one tradfri bulb and a couple nanoleaf bulbs in a different room, so I can't promise that'll look good on your lights :)

lapis fern
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i just find it so odd that my tradfri are orange and the kajplats are this color (a screenshot since my camera doesnt capture the colors well)

image.png
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using the rgb for a dark orange

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but, now i know that matching colors do exist. I'll just have to do some tinkering

vocal cosmos
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fwiw, this is what darkorange is supposed to look like.

darkorange.png
lapis fern
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yeah thats exactly what it looks like on the tradfri

vocal cosmos
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hmm, my tradfri looks a lot more red (but it also depends on your computer monitor too…)

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i actually have some color measurement equipment to calibrate my computer monitor; i wonder it might be possible to use that on my light bulbs to profile them :)

lapis fern
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i did find out that if i change the rgb from 255,140,0 to 255,140,1 the kajplats do turn the right color? lol

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so that's the orange set, sadly this hack doesnt work for all colors

vocal cosmos
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you might find in some cases that setting an xy color makes the color more consistent between the different types of bulbs. I found this little calculator while I was poking around: https://viereck.ch/hue-xy-rgb/ you can put rgb values into the "sRGB" row and then read out the x/y values from the top row.

RGB/xy Color Conversion

Convert xy colors to RGB, and vice versa.

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(or just click on the color selector)

lapis fern
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I'll check that out, thank you very much. Guess I'll take some time tomorrow to find the perfect values for my rotation of colors for each light