RAL Design System

RAL 180 30 15 Blackboard Green

#274C43

RGB 39, 76, 67 · HSL 165°, 32%, 23% · CMYK 49, 0, 12, 70

RAL 180 30 15 Blackboard Green is #274C43 in HEX, rgb(39, 76, 67), cmyk(49%, 0%, 12%, 70%).

RAL 180 30 15, Blackboard Green, is a cool colour from the RAL Design System — the European standard used to specify exact colours for paints and coatings. Its hex value is #274C43, or rgb(39, 76, 67). It's commonly specified for architecture, interiors and product design where a wide, fine-graded palette is needed. Below are its exact colour codes (HEX, RGB, CMYK, HSL), the nearest real interior paints across 16 brands so you can match it on a wall, and similar RAL shades.

HEX → RAL converter
HEX#274C43
RGB39, 76, 67
HSL165°, 32%, 23%
HSV165°, 49%, 30%
CMYK49, 0, 12, 70
Decimal2575427
CSS RGBrgb(39, 76, 67)
CSS HSLhsl(165, 32%, 23%)

Light Reflectance Value (LRV)

6/100

Very Dark

0 · DarkLight · 100

Absorbs almost all light — dramatic and cocooning. Needs strong artificial lighting and works best as an accent or in well-lit rooms.

Undertone

TemperatureCool MasstoneTeal UndertoneGreen

Reads as a cool teal with a green undertone showing through, especially in daylight. Pair trim and adjacent colours to either calm or amplify that undertone.

Complementary

#274C43
#4D2831

Analogous

#284D31
#274C43
#28444D

Triadic

#274C43
#44284D
#4D4428

Monochromatic

#09110F
#0E1B18
#274C43
#428070
#61AE9A

Lighter

#438172
#69A999
#ABCAC2

Darker

#1F3F37
#152C26
#0C1A16

Saturation

#35403D
#284D44
#14614E

What is a RAL colour?

RAL is the European colour-matching standard used to specify exact colours for paints and coatings. Each code — like RAL 180 30 15 from the RAL Design System — maps to one defined colour, so a manufacturer or painter anywhere produces the identical result. It's used first and foremost on window frames, doors, façades, gates, railings and powder-coated metalwork.

Matching RAL 180 30 15 on interior walls

RAL is defined for industrial coatings, not interior wall paint — so to paint a room in this colour you match it to a real interior brand. The Paint Matches above show the nearest Blackboard Green equivalent across 16 brands (Benjamin Moore, Sherwin-Williams, Behr, Dulux and more), each with its code, so you can take RAL 180 30 15 straight to a can.

Built by DSGN.HOUSE Updated 2026

Our color tools run on our own catalogue of 26,000+ real paint colors across 16 brands — Benjamin Moore, Sherwin-Williams, Behr, Dulux, RAL and more — with the color math (HSL and CIELAB matching) computed in-house, not scraped from summaries. Every color you pick maps to a real, buyable paint with its code, so what you see here you can actually take to the store. We review and update these tools and their data regularly.

Created by Denis Kataev, founder of DSGN.HOUSE — a software engineer and digital entrepreneur building professional color-design tools for everyone.

What colour is RAL 180 30 15?

RAL 180 30 15 is Blackboard Green. On screen it is approximately #274C43 (rgb 39, 76, 67).

What is RAL 180 30 15 in RGB?

RAL 180 30 15 is approximately rgb(39, 76, 67). Its HSL and CMYK values are in the colour codes above.

What paint matches RAL 180 30 15?

See “Paint Matches” above — it shows the nearest real paint in 16 brands (Benjamin Moore, Sherwin-Williams, Behr, Dulux and more) so you can paint a wall to match this RAL colour.

What is the HEX code for RAL 180 30 15?

RAL 180 30 15 (Blackboard Green) is approximately #274C43 in HEX — the standard sRGB equivalent for screen.

What is RAL 180 30 15 in CMYK?

RAL 180 30 15 converts to roughly cmyk(49%, 0%, 12%, 70%). For exact ink, confirm against a physical RAL fan deck.

Are RAL hex values exact?

They're the standard sRGB equivalent for screen. RAL is defined for physical coatings, so always confirm critical colour against a physical RAL fan deck.

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