RAL Design System

RAL 240 50 10 Tool Blue

#637985

RGB 99, 121, 133 · HSL 201°, 15%, 45% · CMYK 26, 9, 0, 48

RAL 240 50 10 Tool Blue is #637985 in HEX, rgb(99, 121, 133), cmyk(26%, 9%, 0%, 48%).

RAL 240 50 10, Tool Blue, 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 #637985, or rgb(99, 121, 133). 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#637985
RGB99, 121, 133
HSL201°, 15%, 45%
HSV201°, 26%, 52%
CMYK26, 9, 0, 48
Decimal6519173
CSS RGBrgb(99, 121, 133)
CSS HSLhsl(201, 15%, 45%)

Light Reflectance Value (LRV)

18/100

Dark

0 · DarkLight · 100

Soaks up light and feels moody and intimate. Great for studies, dining rooms and accent walls; pair with ample lighting.

Undertone

TemperatureCool MasstoneBlue UndertoneViolet

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

Complementary

#637985
#846E62

Analogous

#62847F
#637985
#626784

Triadic

#637985
#846278
#788462

Monochromatic

#21282C
#415058
#637985
#8A9EA8
#B6C2C9

Lighter

#7E94A0
#A0AEB6
#C9CFD3

Darker

#4D606A
#35424A
#1E272B

Saturation

#6E7478
#627884
#3187B5

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 240 50 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 240 50 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 Tool Blue equivalent across 16 brands (Benjamin Moore, Sherwin-Williams, Behr, Dulux and more), each with its code, so you can take RAL 240 50 10 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 240 50 10?

RAL 240 50 10 is Tool Blue. On screen it is approximately #637985 (rgb 99, 121, 133).

What is RAL 240 50 10 in RGB?

RAL 240 50 10 is approximately rgb(99, 121, 133). Its HSL and CMYK values are in the colour codes above.

What paint matches RAL 240 50 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 240 50 10?

RAL 240 50 10 (Tool Blue) is approximately #637985 in HEX — the standard sRGB equivalent for screen.

What is RAL 240 50 10 in CMYK?

RAL 240 50 10 converts to roughly cmyk(26%, 9%, 0%, 48%). 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.

← All RAL colours