WLED Colors, Color Temperature and the White Channel
What WLED's three color slots do, how to get a real warm white from RGBW or CCT strips, and what the white and temperature sliders change.
You pick blue, and the strip stays orange. It’s one of the most common WLED color questions, and it nearly always has the same cause: the effect is drawing from a palette, not from your colors. Once you know how WLED’s color slots and white channel work, most “my colors are wrong” problems take a minute to fix.
This covers the WLED side first, so it applies to the web UI and any app. The WLED Max bits come after.
The three color slots
In the WLED web UI, the Colors panel shows three small circles under the color wheel. They are often labeled 1, 2 and 3, and in the JSON API they’re the col array of a segment. What each one does depends on the effect:
- Solid uses only the first color.
- Many effects use color 1 for the moving part and color 2 as the background (for example Chase or Running).
- Some use all three, like Solid Pattern Tri or Tri Wipe.
- Effects that draw from a palette may ignore the slots completely, unless the palette is one of the “color” palettes (like ”* Colors 1&2” or ”* Color Gradient”) that are built from your slots.
Slot 1 (primary), slot 2 (background), slot 3. Solid shows only the first one.
That’s the blue-but-orange problem from the top. Switch the palette to “Default” or one of the color based palettes, or pick an effect that uses the slots.
RGB, RGBW and CCT strips
| Strip type | Channels | What “white” looks like |
|---|---|---|
| RGB (WS2812B, WS2811) | R, G, B | Mixed from three colors, often bluish or pinkish |
| RGBW (SK6812 RGBW) | R, G, B, W | A real white LED per pixel, cleaner and more efficient |
| CCT or RGBCCT (analog or some digital) | warm white and cool white (plus RGB) | True adjustable color temperature |
If your strip is RGBW, make sure WLED knows it. In the web UI that’s Config›LED & Hardware (called LED Preferences on 0.14 and 0.15). Pick the right LED type (for example SK6812/WS2814 RGBW) and look at Auto-calculate W channel from RGB. With “None”, the white LED is only used when you set it yourself. With “Accurate” or “Brighter”, WLED extracts white from your RGB color automatically. The right choice is personal. “Accurate” keeps colors truer, “Brighter” gives more light.
Getting warm white in the web UI
- RGBW strip: move the White channel slider in the Colors panel up and set the RGB color to black or a little warm orange. A touch of red and green on top of the white LED warms it up nicely.
- CCT capable light: a White balance slider appears. Slide it toward warm.
- Plain RGB strip: pick a warm color like RGB 255, 160, 60 and accept that it won’t look like a real bulb. Lower brightness hides the color shift a bit.
Roughly how it looks: RGB mixed white on the left, a warm white LED on the right.
Colors wrong? Check color order first
If red comes out green, or blue comes out red, no color setting will look right until the Color Order of the output matches the strip. WS2812B strips are usually GRB, many WS2811 pixels are RGB, and some are something else again. WLED offers GRB, RGB, BRG, RBG, BGR and GBR.
A two minute test finds yours:
- In Config›LED & Hardware (LED Preferences on 0.14 and 0.15), set Color Order to RGB and save.
- Set the light to Solid pure red, then pure green, then pure blue, and write down the color you actually see each time.
- The first letters of what you saw, in that order, are your strip’s order. Red shows green, green shows red, blue shows blue: GRB.
- Set that order and save.
In WLED Max it’s the Color Order picker for each output in Device Settings, LED Preferences.
Whites that look blue or pink, and other color problems
Whites look blue or pink. RGB strips can’t make a neutral white. Use an RGBW strip, or lower the blue in your white. Also check the color order in Config > LED & Hardware. If red shows as green, the order is wrong (GRB vs RGB) and every mixed color will be off.
The white slider does nothing. WLED doesn’t think the strip has a white channel. Pick the correct RGBW LED type in Config > LED & Hardware. While you’re there, Auto-calculate W channel from RGB decides whether WLED lights the white LED by itself when you pick a whitish color. “None” leaves it to you.
The Temperature slider changes the color but it’s not real CCT. Your light doesn’t report a CCT output, so WLED Max shows the closest color your LEDs can mix instead. That’s expected on RGB and most RGBW strips. True color temperature needs a CCT capable output (analog CCT strips or RGBCCT).
Colors change but the effect ignores them. The effect uses a palette. Choose a color based palette or a different effect.
Full white is dim or flickers. You’re hitting the power limit. WLED’s brightness limiter (Maximum PSU Current in Config > LED & Hardware) scales the strip down, and an undersized power supply causes flicker. White at full brightness is the most power hungry color. A WS2812B LED can draw around 55 to 60 mA at full white (WLED assumes 55 mA by default).
In WLED Max
WLED Max shows the same three slots on the Control tab as Primary (Fx), Background (Bg) and Custom (Cs). Tap one to pick from the quick colors (red, orange, yellow, green, cyan, blue, magenta, white), or open Picker for the color wheel and a Whites tab with presets from Warm (2700K) to Blue Sky (8000K). When you customize an effect on the Effects tab, the app tells you when that effect ignores palettes or colors, which saves a lot of guessing.
For white and temperature, on the Control tab and in the color picker:
- Temperature moves from warm to cool. On a light that reports a CCT output, the app writes real color temperature. On a light without CCT, it sends an RGB white at that temperature instead, so the slider still does something sensible.
- White LED shows up on RGBW strips in the color picker’s Whites tab. It’s a readout of the white channel, not a slider, and it’s “kept when you change the color”, so a white level you set in the web UI or saved in a preset isn’t wiped when you tint with the wheel.
Colors shown in the app match what the light shows. If your light runs a pattern from Pattern Maker, changing the color asks first (“This light shows a pattern. Changing the color replaces it.”).
The live preview at the top of the Control page
Since version 1.1.9 the card at the top of the Control tab (the one with the power button and the light’s name) has a thin strip under the name. It shows what the light is doing right now: the same colors, moving the same way. On a matrix the live picture is a small grid instead of a strip. Nothing to set up, it just appears when you open a light. While a preset or playlist is running, its name appears under the strip, taken from the light itself.
A few things to know:
- It shows one light. When a group or All Devices is selected, there is no strip.
- When the light is off, the strip is dark, like the light.
- The strip can only move while the light sends its live view to the app. WLED sends that view to one viewer at a time, so if the WLED web page (its Peek bar) or another app is watching the same light, the strip stops moving and shows the current colors instead. Older firmware without a live view does the same. On iOS a small NOT LIVE badge appears beside the strip after a few seconds to tell you that is what’s happening; on Android the strip shows a LIVE badge while it is live and no badge while it’s still. Close the other viewer and reopen the Control tab to get the moving strip back.
- When the light can’t be reached, iOS hides the strip and Android shows the last colors with an OFFLINE badge.
- The strip is there to look at, not to tap. To edit segments, use the Segment Studio tile further down the page.
One segment at a time
If your light has several segments (for example a desk strip split into left and right), the WLED web UI applies colors to the selected segments. Tick the checkbox of each segment you want to change in the Segments panel first.
In WLED Max, the Control tab shows segment chips for multi-segment lights. “Tap a segment chip above to color one at a time.” Studio opens Segment Studio for full per-segment control, which is explained in WLED segments explained.
Quick Effects
Quick Effects make the Control tab faster for everyday use: a row of up to six favorite effects, one tap each. Use Edit quick effects to choose them. (“Quick effects has a limit of 6. Remove one first to add another.”) Saved looks like “evening warm white” live on the Presets tab. See WLED presets and the power-on preset to set those up.
Brightness has its own slider, and if you like numbers, turn on Show Brightness % under Appearance.
Customize the Control page
From version 1.1.9 you choose which tiles show under Colors on the Control page, and in what order. The same steps work on iOS and Android.
- On the Control tab, tap the round … button to the right of the light’s name (VoiceOver calls it More, TalkBack More options).
- Tap Customize Page.
- You get one row per tile: Segment Studio, Make a Pattern, Snap a Palette, Schedule & Timer, Music Reactive, Circadian Mode, Quick Effects and Presets. Turn a row’s switch off to hide that tile, or on to show it again.
- Drag the handle (the three lines at the right end of a row) up or down to change the order.
- Tap Done.
The Control page changes behind the sheet as you go, so you can see the result before you tap Done. The layout is the same for all your lights. The top of the page (the name card with power and the live preview, the brightness slider, the segment chips and Colors) always stays where it is.
A few rows carry a note. Not in group mode means the tile only shows while a single light is selected (Segment Studio and Make a Pattern). Not available for this light means the light you picked can’t use it (Make a Pattern needs a single strip light on WLED 0.14 or newer). Shows when this light has presets sits on the Presets row until the light has a preset to show. The rows stay in the list with their note so you can still place them, and the tile shows up on the lights where it applies.
Hid a tile by mistake? Open Customize Page again and switch it back on. That’s the only place a hidden tile comes back, which is why the sheet says “Turn a hidden tile back on anytime.” Quick Effects and Presets also live on the Effects and Presets tabs, and Snap a Palette under Palettes on the Effects tab. If you hide every tile, the page shows a Customize this page link where the tiles were.
To start over, tap Reset to Default at the bottom of the list and confirm with Reset. Every tile shows again in the original order.
With a group or All Devices selected, the … button is there too, and Customize Page is the only item in it. With VoiceOver or TalkBack, use the Move up and Move down actions on a row instead of dragging.
The effects side of colors (which effects use which slot, and what Speed and Intensity do) is in the WLED effects list. If no built-in palette has the colors you want, make one from a photo.