RAL Design System
RAL 090 40 10 Boulder Brown
#655E4E
RAL 090 40 10 Boulder Brown is #655E4E in HEX, rgb(101, 94, 78), cmyk(0%, 7%, 23%, 60%).
RAL 090 40 10, Boulder Brown, is a warm colour from the RAL Design System — the European standard used to specify exact colours for paints and coatings. Its hex value is #655E4E, or rgb(101, 94, 78). 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.
RAL 090 40 10 Colour Codes
Paint Matches — RAL 090 40 10 across 16 brands
Benjamin Moore
Durango 2137-30
Behr
Landmark Brown N220-6
PPG
Lemur 1101-7
Dulux
Parks And Gardens SN3A9
Sherwin-Williams
Suitable Brown SW7054
Vista Paint
Monk's Cloth C-219
Valspar
Roasted Sepia 6006-2C
Hallman-Lindsay
Hannover Hills 228
RAL
Pearl Beige 1035
Dunn-Edwards
Shaker Gray DE6231
IKEA
IKEA148 148
Kilz
Tea Leaf LF100-02
Farrow & Ball
Salon Drab 290
Dutch Boy
Ashton Grey VS-9303
Colorhouse
Clay .06 Clay-06
Kobra
Green 37
Light Reflectance & Undertone
Light Reflectance Value (LRV)
11/100
Dark
Soaks up light and feels moody and intimate. Great for studies, dining rooms and accent walls; pair with ample lighting.
Undertone
Reads as a warm orange with a yellow undertone showing through, especially in daylight. Pair trim and adjacent colours to either calm or amplify that undertone.
Colour Harmonies
Complementary
Analogous
Triadic
Monochromatic
Shades & Tints
Lighter
Darker
Saturation
Similar RAL Colours
About RAL 090 40 10
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 090 40 10 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 090 40 10 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 Boulder Brown equivalent across 16 brands (Benjamin Moore, Sherwin-Williams, Behr, Dulux and more), each with its code, so you can take RAL 090 40 10 straight to a can.
More
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.
Frequently Asked Questions
What colour is RAL 090 40 10?
RAL 090 40 10 is Boulder Brown. On screen it is approximately #655E4E (rgb 101, 94, 78).
What is RAL 090 40 10 in RGB?
RAL 090 40 10 is approximately rgb(101, 94, 78). Its HSL and CMYK values are in the colour codes above.
What paint matches RAL 090 40 10?
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 090 40 10?
RAL 090 40 10 (Boulder Brown) is approximately #655E4E in HEX — the standard sRGB equivalent for screen.
What is RAL 090 40 10 in CMYK?
RAL 090 40 10 converts to roughly cmyk(0%, 7%, 23%, 60%). 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.
