LG 24U631A-B 24" 23.8" Review

The LG 24U631A-B scores in the 83rd percentile for color accuracy with 99% sRGB coverage, making it a sharp, color-true 24-inch QHD monitor. Its 100Hz refresh rate is a nice smoothness boost over standard office displays. However, at $937, it's a premium price for a monitor with only tilt adjustment and average performance scores.

The LG 24U631A-B is a 24-inch QHD IPS monitor that lands in a weird, interesting spot. It's not a gaming beast, and it's not a full-blown creative pro display, but it scores in the 84th percentile for features and the 83rd for color accuracy. That means for under $1,000, you're getting a sharp 2560x1440 panel with 99% sRGB coverage and a 100Hz refresh rate, which is a solid step up from the standard 60Hz office fare.

At $937, it's priced like a premium 24-inch monitor, and its performance percentile sits right at the 50th mark. That tells you it's a middle-of-the-pack performer in raw speed, but its strengths are in its color fidelity and the inclusion of a USB-C port with 15W power delivery. It's a monitor built for someone who wants a clean, accurate picture with a little extra smoothness for everyday tasks.

Let's talk numbers. The 100Hz refresh rate and 5ms response time put its performance score at the 50th percentile. That's perfectly fine for general use and light gaming, but don't expect esports-level fluidity. Where it shines is in color, hitting the 83rd percentile with its 99% sRGB coverage. For photo editing or design work where color accuracy matters, that's a legitimately good score. The 250-nit brightness is on the lower side, so it's best for controlled lighting, not a sun-drenched room.

The panel itself is a 23.8-inch IPS, so you get those wide viewing angles and consistent colors. The 100Hz is the real performance kicker here—it makes scrolling and general desktop use feel noticeably smoother than a 60Hz panel. It's not a 240Hz gaming monster, but it's a tangible quality-of-life upgrade that sits in a sweet spot between standard office monitors and high-refresh gaming displays.

The value proposition here is niche. At $937, you're paying a premium for a 24-inch monitor. You're not buying raw performance (50th percentile), you're buying excellent color accuracy (83rd percentile) and a useful feature set (84th percentile) in a compact form. Compared to a basic 60Hz QHD office monitor, the 100Hz and USB-C add tangible value. But compared to larger 27-inch QHD monitors or even entry-level 4K displays near this price, the screen real estate feels limited. It's a good monitor if its specific strengths align with your needs, but it's not a bargain.

Stacked up against the giants in our database, it's a different beast. The Samsung Odyssey G9 or ASUS ROG Swift OLED? Those are for immersive gaming and HDR. This LG is for focused, accurate work. Compared to a Dell UltraSharp 27" 4K, you're trading resolution and screen size for a higher refresh rate and slightly better color percentile. Against a basic 24-inch QHD 60Hz office monitor, the LG wins on smoothness and features. Its real competition is from 27-inch QHD IPS panels around the same price that might offer more adjustability or brighter HDR. This monitor carves out its space by being a high-quality, compact, color-accurate panel with that nice 100Hz bump.

Skip this monitor if you're a competitive gamer—the 50th percentile performance score and 100Hz refresh rate won't cut it. Also, avoid it if you need a bright screen for a sunny room (250 nits is low) or extensive ergonomic adjustments (it's tilt-only). If you're just browsing and doing office work, you can find a perfectly good 24-inch QHD monitor for significantly less money. This monitor's value is in its color accuracy, and if you don't need that, you're overpaying.

We recommend the LG 24U631A-B if you have a specific need for a compact, color-accurate secondary monitor or a clean main display for a tight workspace. The 99% sRGB and 100Hz are a great combo for designers or developers who want smooth scrolling and true colors. But at $937, it's a hard sell for most people. If you don't need the color accuracy or the 100Hz specifically, you can get a larger 27-inch QHD monitor with similar features for less money. This is a data-backed pick for a precise use case, not a general crowd-pleaser.