S 4010-Y50R vs Thunderbird
Where S 4010-Y50R belongs to NCS's range, Thunderbird is a PPG color. Hue-wise, S 4010-Y50R belongs to the beige-greige family and Thunderbird to the greige-grey family. S 4010-Y50R (LRV 30) reflects noticeably more light than Thunderbird (LRV 21), a difference of 9 points that becomes especially apparent in rooms with limited natural light. The ΔE 9.7 gap is real but not dramatic — close enough to use together, distinct enough to matter as a choice. Below you'll find 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
S 4010-Y50R vs Thunderbird in Real Spaces
1 real room side by side. S 4010-Y50R and Thunderbird are close enough that the difference can be hard to judge from a chip alone — these photos show how each reads at scale, across different spaces and lighting conditions.
Living Room
In a living room, color works across both daylight and evening light — the same wall can read very differently at noon and at 8pm. The LRV gap is large enough that S 4010-Y50R will make the room feel meaningfully brighter than Thunderbird would.
Color Details
S 4010-Y50R vs Thunderbird Simulated Comparison
5 simulated room previews — drag the slider on each to see S 4010-Y50R on one side and Thunderbird on the other.
Digital color is approximate. These simulations are generated from the manufacturer's hex values and overlaid on grayscale room photos — your screen's calibration, brightness, and viewing angle all affect how they render. Before committing to either color, test physical samples in your own space under the light you actually live with.
More S 4010-Y50R comparisons
See how S 4010-Y50R stacks up against other well-photographed colors across different brands and tones.
At LRV 83 vs 30, White Dove is decisively the brighter choice.
Ammonite reflects far more light (LRV 69 vs 30), opening up a space where S 4010-Y50R encloses it.
At LRV 30 vs 6, S 4010-Y50R is decisively the brighter choice.
Purbeck Stone reflects far more light (LRV 52 vs 30), opening up a space where S 4010-Y50R encloses it.
With LRVs of 30 and 30, the two reflect almost the same amount of light.
At LRV 52 vs 30, Mizzle is decisively the brighter choice.
Agreeable Gray reflects far more light (LRV 60 vs 30), opening up a space where S 4010-Y50R encloses it.
At LRV 58 vs 30, Accessible Beige is decisively the brighter choice.
A 3-point LRV gap (30 vs 27) makes S 4010-Y50R the marginally brighter of the two.
French Gray reflects far more light (LRV 43 vs 30), opening up a space where S 4010-Y50R encloses it.
S 4010-Y50R reflects far more light (LRV 30 vs 4), opening up a space where Naval encloses it.
At LRV 55 vs 30, Tranquil Dawn is decisively the brighter choice.
At LRV 30 vs 13, S 4010-Y50R is decisively the brighter choice.
At LRV 44 vs 30, Hardwick White is decisively the brighter choice.
Pure White reflects far more light (LRV 84 vs 30), opening up a space where S 4010-Y50R encloses it.
S 4010-Y50R reads slightly lighter (LRV 30 vs 21), a gap that shows most in low-lit rooms.
At LRV 66 vs 30, Balboa Mist is decisively the brighter choice.
At LRV 74 vs 30, Shoji White is decisively the brighter choice.
At LRV 83 vs 30, Snowbound is decisively the brighter choice.
At LRV 30 vs 12, S 4010-Y50R is decisively the brighter choice.
At LRV 68 vs 30, Skimming Stone is decisively the brighter choice.
Dix Blue reads slightly lighter (LRV 41 vs 30), a gap that shows most in low-lit rooms.
Calamine reflects far more light (LRV 68 vs 30), opening up a space where S 4010-Y50R encloses it.
S 4010-Y50R reads slightly lighter (LRV 30 vs 25), a gap that shows most in low-lit rooms.
At LRV 30 vs 12, S 4010-Y50R is decisively the brighter choice.
At LRV 45 vs 30, Saybrook Sage is decisively the brighter choice.
With LRVs of 31 and 30, the two reflect almost the same amount of light.
S 4010-Y50R reflects far more light (LRV 30 vs 7), opening up a space where Pine Needle encloses it.
S 4010-Y50R reads slightly lighter (LRV 30 vs 24), a gap that shows most in low-lit rooms.
Guilford Green reflects far more light (LRV 57 vs 30), opening up a space where S 4010-Y50R encloses it.