RAL Design System plus — hue 150
The series only begins at L\* 30. Unlike 160, 170 and 180, which continue down to L\* 20, 150 offers no very dark shades: the darkest is 150 30 30, Mountain green, with an LRV of 9.3. That is a factual limit of the system, not a choice on the user's part.
In practice that means a limitation for the classic dark exterior green. If you are looking for fencing, a frame or a door in the deep painted green customary in the Netherlands — the area of RAL 6009 fir green — you will not find it here, but one hue further on. If the work calls for a mid-dark green with a herbal, earthy undertone, this is the area.
With saturation up to C\* 60, 150 reaches further than 170 (55) and 180 (50). The strongest shade, 150 50 60, is called Cold green, and that name is illuminating: as soon as you raise the saturation in this area, the green becomes not friendlier but sharper.
All 35 colours in this group
More about hue 150
That fits how saturation works. Of the three colour attributes it determines almost entirely how lively, dynamic and eye-catching a surface looks. In this hue you therefore have more range than in the pure green — and with it more risk. A saturated surface of this type at office or classroom wall size is tiring; on an accent surface, a machine cover or a detail in a sports floor it works.
The majority of the shades lie in the muted part: saturation 10 to 30, across the whole lightness scale. That is the usable heart of this hue. Shades such as 150 60 20 Orient green, 150 70 10 Tea green and 150 80 10 Organza green are greens that colour a space without the colour announcing itself — and at an LRV of 30.9, 42.6 and 58.7 there is ample light left in the space as well.
At the light edge it narrows quickly. The lightest shade, 150 93 05 Quark white with LRV 83.0, barely reads as a colour on a large surface; it does, however, make a space noticeably cooler than a neutral white of the same lightness.
With an average hue angle of 157 degrees, this green still has a trace of yellow in it. That makes it usable next to warm materials: next to oak, larch or a warm brick a shade from 150 does not jar, where a blue-green from 200 does. Next to cold concrete the opposite happens — there the green gains yellow and can unintentionally read as olive.
On large surfaces, expect the yellow component to play a part over time as well. Light shades with a yellow-green direction yellow along with the binder, so that the colour slowly shifts towards 140. On interior work in rooms with little daylight that is most noticeable.
Within this hue, choose the lightness first and the saturation second; that is the order in which the eye judges a green. Place the candidate next to the material that will sit beside it, and not on a white table — a green on white always reads more saturated than the same green in situ. For approval, use the A4 colour samples as the colour standard; a fan-deck sample is too small to assess a green reliably.
Technical data
Hue: 150 · Shades: 35 · Lightness: L\* 30–93 · Saturation: C\* 05–60 · Lab values: per shade on the colour page · LRV: 9.3 to 83.0 · Included in: RAL D4 A4 colour samples (colour standard), RAL D2 fan deck, RAL D3 colour book, RAL D4 atlas, RAL D6 and D8 boxes
Neighbouring hues
RAL Design 140, RAL Design 160
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