RAL 7021 Black grey vs RAL 7004 Signal grey
Side-by-side comparison of RAL 7021 and RAL 7004. Click on a color to view its full details page.
Color Comparison
With a Delta E of 36.8, these colors are very different. Both colors belong to the Blue hue family. Both colors have a neutral temperature. RAL 7004 is brighter with an LRV of 30.9 compared to 3.5 for RAL 7021. Both colors have similar saturation levels.
Color Difference (ΔE)
CIEDE2000 perceptual difference
36.78
Very different
0
5
10
20+
| RAL 7021 Black grey | RAL 7004 Signal grey | |
|---|---|---|
| RGB |
Red 50
Green 53
Blue 55
|
Red 150
Green 151
Blue 153
|
| CMYK |
Cyan 9%
Magenta 4%
Yellow 0%
Key 78%
|
Cyan 2%
Magenta 1%
Yellow 0%
Key 40%
|
| Hue |
204° (Blue)
|
220° (Blue)
|
| Saturation | 5% | 1% |
| Lightness | 21% | 59% |
| LRV | 3.5 | 30.9 |
| CIE L* | 21.9 | 62.4 |
| Color Temperature | Neutral 4520 K | Neutral 4924 K |
See Colors in Context
Window
Front Door
Entrance
Balcony
Window Frame Detail
