Indigo Shade vs Azure blue

Indigo ShadeDuluxvsAzure blueRAL ClassicΔE 7.5Noticeable difference

Indigo Shade (Dulux) and Azure blue (RAL Classic) come from different manufacturers. These are both blues, so the question isn't which hue to choose — it's where within blue to land. The 3-point LRV gap — 12 for Azure blue vs 9 for Indigo Shade — means Azure blue will open up a space more effectively. ΔE 7.5 means they're clearly different, but not dramatically so — they'd pair well in the same room. Below you'll find 2 real-room photo comparisons where both colors appear side by side, plus 5 simulated room previews.

Indigo Shade vs Azure blue in Real Spaces

2 real rooms side by side. Indigo Shade and Azure blue are close enough that the difference can be hard to judge from a chip alone — these photos show how each reads at scale, across different spaces and lighting conditions.

Front Door

On a front door, the color is both the first and last thing you see — a context where even a modest tonal difference reads clearly. The distinction reads clearly at room scale, making the choice between them concrete.

Indigo ShadeDulux 10BB 09/155 front door

@masonandcopainters

Azure blueRAL Classic 5009 front door color review

@ld.decor._lejuez

Kitchen Cabinets

Cabinet color is always seen in context — against countertops, backsplash, and hardware — which amplifies undertone differences that might disappear on a plain wall. At this scale, the choice between them becomes clear in a way that a swatch alone can't communicate.

Indigo ShadeIndigo Shade kitchen cabinets color review

@c_refinish

Azure blueRAL Classic 5009 kitchen cabinets color review

@kuhnitetris

Color Details

Indigo Shade
Dulux · 10BB 09/155
Hex#315368
LRV9.0
BrandDulux
Number10BB 09/155
Undertone
TemperatureCool
BrightnessDark
Azure blue
RAL Classic · RAL 5009
Hex#215F78
LRV11.9
BrandRAL Classic
NumberRAL 5009
Undertone
Temperature
BrightnessDark

Indigo Shade vs Azure blue Simulated Comparison

5 simulated room previews — drag the slider on each to see Indigo Shade on one side and Azure blue on the other.

Bathroom
Bedroom
House
Kitchen Cabinets
Living Room

Digital color is approximate. These simulations are generated from the manufacturer's hex values and overlaid on grayscale room photos — your screen's calibration, brightness, and viewing angle all affect how they render. Before committing to either color, test physical samples in your own space under the light you actually live with.

More Indigo Shade comparisons

See how Indigo Shade stacks up against other well-photographed colors across different brands and tones.

White Dove
Indigo Shade
White Dove
Benjamin Moore
White Dove
LRV 83

White Dove is the lighter choice

Ammonite
Indigo Shade
Ammonite
Farrow & Ball
Ammonite
LRV 69

Ammonite is the lighter choice

Iron Ore
Indigo Shade
Iron Ore
Sherwin-Williams
Iron Ore
LRV 6

Indigo Shade reads slightly lighter

Purbeck Stone
Indigo Shade
Purbeck Stone
Farrow & Ball
Purbeck Stone
LRV 52

Purbeck Stone is the lighter choice

Evergreen Fog
Indigo Shade
Evergreen Fog
Sherwin-Williams
Evergreen Fog
LRV 30

Evergreen Fog reads noticeably lighter

Mizzle
Indigo Shade
Mizzle
Farrow & Ball
Mizzle
LRV 52

Mizzle is the lighter choice

Agreeable Gray
Indigo Shade
Agreeable Gray
Sherwin-Williams
Agreeable Gray
LRV 60

Agreeable Gray is the lighter choice

Accessible Beige
Indigo Shade
Accessible Beige
Sherwin-Williams
Accessible Beige
LRV 58

Accessible Beige is the lighter choice

Denim Drift
Indigo Shade
Denim Drift
Dulux
Denim Drift
LRV 27

Denim Drift reads noticeably lighter

French Gray
Indigo Shade
French Gray
Farrow & Ball
French Gray
LRV 43

French Gray is the lighter choice

Naval
Indigo Shade
Naval
Sherwin-Williams
Naval
LRV 4

Indigo Shade reads slightly lighter

Tranquil Dawn
Indigo Shade
Tranquil Dawn
Dulux
Tranquil Dawn
LRV 55

Tranquil Dawn is the lighter choice

Bancha
Indigo Shade
Bancha
Farrow & Ball
Bancha
LRV 13

Bancha reads slightly lighter

Hardwick White
Indigo Shade
Hardwick White
Farrow & Ball
Hardwick White
LRV 44

Hardwick White is the lighter choice

Pure White
Indigo Shade
Pure White
Sherwin-Williams
Pure White
LRV 84

Pure White is the lighter choice

Artichoke
Indigo Shade
Artichoke
Sherwin-Williams
Artichoke
LRV 21

Artichoke reads noticeably lighter

Balboa Mist
Indigo Shade
Balboa Mist
Benjamin Moore
Balboa Mist
LRV 66

Balboa Mist is the lighter choice

Shoji White
Indigo Shade
Shoji White
Sherwin-Williams
Shoji White
LRV 74

Shoji White is the lighter choice

Snowbound
Indigo Shade
Snowbound
Sherwin-Williams
Snowbound
LRV 83

Snowbound is the lighter choice

Pewter Green
Indigo Shade
Pewter Green
Sherwin-Williams
Pewter Green
LRV 12

Nearly identical in tone

Skimming Stone
Indigo Shade
Skimming Stone
Farrow & Ball
Skimming Stone
LRV 68

Skimming Stone is the lighter choice

Dix Blue
Indigo Shade
Dix Blue
Farrow & Ball
Dix Blue
LRV 41

Dix Blue is the lighter choice

Calamine
Indigo Shade
Calamine
Farrow & Ball
Calamine
LRV 68

Calamine is the lighter choice

Treron
Indigo Shade
Treron
Farrow & Ball
Treron
LRV 25

Treron reads noticeably lighter

Vintage Vogue
Indigo Shade
Vintage Vogue
Benjamin Moore
Vintage Vogue
LRV 12

Nearly identical in tone

Saybrook Sage
Indigo Shade
Saybrook Sage
Benjamin Moore
Saybrook Sage
LRV 45

Saybrook Sage is the lighter choice

Pale Green
Indigo Shade
Pale Green
RAL ClassicClassic
Pale Green
LRV 31

Pale Green reads noticeably lighter

Pine Needle
Indigo Shade
Pine Needle
Dulux
Pine Needle
LRV 7

Nearly identical in tone

Cement grey
Indigo Shade
Cement grey
RAL ClassicClassic
Cement grey
LRV 24

Cement grey reads noticeably lighter

Guilford Green
Indigo Shade
Guilford Green
Benjamin Moore
Guilford Green
LRV 57

Guilford Green is the lighter choice