What Color Is September: Sapphire, Aster & Morning Glory
September features a sophisticated color palette from its birthstone and birth flowers: the deep blue Sapphire, the colorful Aster, and the celestial Morning Glory.
The Color of September
September is represented by one of the most revered gemstones in the world - the Sapphire. Known for its magnificent blue color, Sapphire has been treasured throughout history for its beauty, rarity, and symbolic significance as the stone of wisdom and royalty.
The deep blue of Sapphire perfectly captures the essence of early autumn, when the sky takes on a deeper, more intense blue and nature begins its transition to the contemplative season. This magnificent gemstone ranges in color from light to deep blue, with the most valuable specimens displaying a pure, intense "cornflower blue."
Let's explore the distinctive color and fascinating properties of September's birthstone, the Sapphire.


The Majestic Blue of Sapphire
For millennia, Sapphire has been a symbol of wisdom, loyalty, and divine favor. Its rich blue color evokes feelings of depth, trust, and contemplation, making it a perfect representation for September, the month of new beginnings and scholarly pursuits.
Sapphire is a variety of the mineral corundum (aluminum oxide), and it gets its blue color from the presence of iron and titanium. The intensity and quality of the blue color depends on the amount and interaction of these trace elements. The most prized sapphires have a pure, vibrant blue color without being too dark or too light.
Sapphire Facts
- Sapphire is a variety of the mineral corundum, the same mineral as ruby, but in colors other than red.
- With a hardness of 9 on the Mohs scale, sapphire is the second hardest natural mineral after diamond.
- The most prized blue sapphires have a pure, intense blue color known as "cornflower blue" or "Kashmir blue."
Sapphire Varieties and Sources
While blue is the most famous color for sapphires, they actually come in nearly every color except red (red corundum is called ruby). Kashmir sapphires, mined briefly in the late 19th century, are considered the finest, known for their legendary velvety blue color and exceptional clarity.
Burmese sapphires typically have a rich, royal blue color, while Sri Lankan sapphires can range from light to medium blue. Australian sapphires often have a darker, more inky blue color. Other sources include Thailand, Montana (USA), and Madagascar, each producing sapphires with unique characteristics.
More Sapphire Facts
- Sapphires come in nearly every color except red, including yellow, pink, green, purple, and the rare padparadscha (orange-pink).
- Star sapphires display a six-rayed star effect caused by needle-like inclusions of rutile.
- Kashmir sapphires are considered the finest, with their legendary velvety blue color and exceptional clarity.

The Symbolism of September's Color
The deep blue of Sapphire carries profound symbolism for those born in September.
Primary Symbolism
- Wisdom
- Loyalty
- Truth
Additional Symbolism
- Nobility
- Protection
- Divine Favor
Connections to September
- The deep blue of Sapphire represents wisdom and clarity, perfectly aligned with September's position as the month of new beginnings and learning.
- Sapphire's association with loyalty and truth reflects the steadfast nature needed for autumn transitions.
- As one of the four precious gemstones (along with diamond, ruby, and emerald), Sapphire holds a special place in the gemstone hierarchy.
- The color blue has long been associated with depth, stability, trust, and divine connection.
September's Birth Flowers: Complementary Colors
While Sapphire represents September with its deep blue, the month is also associated with two beautiful birth flowers that complement September's color palette: Aster and Morning Glory.
Aster displays a lovely range of colors including purple, pink, white, and occasionally blue. These daisy-like flowers with their star-shaped petals add delicate beauty and soft color to September's palette. Aster symbolizes love, wisdom, and faith, making it a perfect complement to Sapphire's symbolism.
Morning Glory contributes celestial blues, purples, pinks, and whites to September's palette with its trumpet-shaped blooms that open with the morning sun. These climbing flowers symbolize unrequited love, affection, and the fleeting nature of life and love, adding depth to September's color story.
Together with Sapphire's blue, September's birth flowers create a harmonious, contemplative color palette that captures the wisdom and serenity of early autumn.

September's Complete Color Palette
September offers one of the most sophisticated and contemplative color palettes of any month, combining the deep blue of Sapphire with the gentle hues of its birth flowers.
Sapphire Blue
The deep, majestic blue of September's birthstone symbolizes wisdom, loyalty, and truth. This rich color ranges from cornflower blue to deep royal blue tones.
Aster Purple & Pink
The soft purples and pinks of Aster represent love, wisdom, and faith. These delicate colors provide a gentle contrast to Sapphire's deep blue.
Morning Glory Blue & Purple
The celestial blues and purples of Morning Glory symbolize affection and the fleeting nature of beauty, adding depth to September's contemplative palette.
This sophisticated color palette makes September one of the most contemplative months of the year, combining deep blues with soft purples and pinks that perfectly capture the wisdom and serenity of early autumn.
Whether you prefer the majestic blue of Sapphire, the soft purples of Aster, or the celestial hues of Morning Glory, September offers a color palette that represents wisdom, loyalty, and the beauty of transition.
Explore Other Birthstones
Explore Birth Flowers
Discover the beautiful birth flowers associated with each month.
Learn About September's Birth FlowerFree Birthstone Chart
Looking for a quick reference to all birthstones? Download our free printable birthstone chart featuring all 12 months and their corresponding gemstones.
Get Your Free Birthstone ChartFrequently Asked Questions about September's Color
What color represents September?
September is represented by several colors: the deep blue of Sapphire (its birthstone), and the colors of its birth flowers - purple, pink, and white from Aster, and blue, purple, pink, and white from Morning Glory.
What is the color of the year September?
While "Color of the Year" is a concept often associated with entities like Pantone, September doesn't have a single designated annual color. Instead, it has a rich palette of traditional colors from its birthstone and birth flowers: Sapphire's deep blue, Aster's purples and pinks, and Morning Glory's blues and purples.
What is the color theme for September?
September's color theme is wise and serene, featuring the deep blue of Sapphire, the soft purples and pinks of Aster, and the celestial blues and purples of Morning Glory. This palette combines cool, calming tones that perfectly capture the transition from summer to autumn.
What is the color of each month?
Each month has associated birthstones with distinct colors: January (Garnet - red), February (Amethyst - purple), March (Aquamarine - blue-green), April (Diamond - clear), May (Emerald - green), June (Pearl - white, Alexandrite - color-changing), July (Ruby - red), August (Peridot - green), September (Sapphire - blue), October (Opal/Tourmaline - multi-color), November (Topaz/Citrine - yellow/orange), and December (Tanzanite/Turquoise/Zircon - blue/turquoise).
Do birth months have colors?
Yes, birth months are strongly associated with colors through both their traditional birthstones and birth flowers. Each birthstone has a primary color or range of colors, and birth flowers add additional hues to the month's color palette. For September, this includes the deep blue of Sapphire, the purples and pinks of Aster, and the blues and purples of Morning Glory.
What color is each season?
Seasonal colors are often symbolic: Spring (pastels, light greens, pinks, yellows), Summer (bright blues, yellows, oranges, vivid greens), Autumn/Fall (earthy browns, oranges, reds, deep yellows), and Winter (cool blues, whites, silvers, deep reds).