Southwest built a whole brand around love — and put a heart on the plane.

Southwest’s identity is the Heart — a tricolour heart symbol in blue, red and gold/yellow, painted on the aircraft belly — launched in a September 2014 rebrand (by Lippincott with the ad agency GSD&M), which retired the old plane illustration. It’s the perfect expression of Southwest’s long-running “LUV” theme. The wordmark is a documented custom typeface, “Southwest Sans” (developed with Monotype), which replaced the brand’s previous Helvetica — so, unusually, the logo font is a named custom face rather than a guess. (Earlier liveries: the 2001–2014 “Canyon Blue,” and the 1970s–80s “Desert Gold.”)

The “LUV” runs deep. Southwest trades on the NYSE under the ticker LUV, and it originated at and is headquartered by Dallas Love Field — so the love-and-heart branding is rooted in a real place. Southwest was incorporated on 9 March 1967 as Air Southwest by Herb Kelleher and Rollin King, renamed Southwest Airlines in 1971, and flew its first revenue flights on 18 June 1971 (the Dallas–Houston–San Antonio “Texas triangle”), pioneering the US low-cost carrier model. (The famous story that the triangle route was sketched on a cocktail napkin is a beloved legend — but Rollin King himself said it never happened, so treat it as apocryphal.) Southwest became known for a fun, humorous brand voice, a single fleet type (the Boeing 737), and passenger-friendly policies — including the “Bags Fly Free” policy that was a signature for years (though it ended in 2025, as the airline introduced changes like assigned seating). On ownership: Southwest Airlines Co. is publicly traded (NYSE: LUV).

Southwest runs on blue, red and yellow. Click a swatch to copy the hex.

Southwest’s 2014 palette is a warm, optimistic trio: “Bold Blue” (spirit and ascent), “Warm Red” (warrior spirit and service) and “Sunrise Yellow” (a new start), plus a fourth, “Summit Silver.” Together — as the tricolour Heart — they feel friendly, energetic and human, the opposite of a cold, corporate airline. It’s a palette built to express warmth and personality, matching Southwest’s famously fun, customer-first brand. The honest caveat: the airline’s own hex values weren’t confirmed here, so treat the specific colours as approximate. The blue-red-and-yellow combination, gathered into a heart, is the ownable core — colour that literally spells out love and warmth.

The lesson is a palette that expresses warmth and personality. Southwest’s bright blue-red-and-yellow Heart makes a low-cost airline feel friendly, human and fun — colour used to convey a warm brand personality rather than corporate seriousness. For designers, it’s a reminder that a warm, multi-colour palette (assembled into a meaningful symbol like a heart) can differentiate a brand on personality and emotion. The takeaways: choose colours that express your brand’s character (warm, optimistic tones for a friendly, customer-first airline); gather them into a meaningful, ownable symbol (the Heart); and present specific hexes as approximate when the official values aren’t confirmed.

The wordmark is a friendly, rounded sans — warm and human.

Southwest’s custom “Southwest Sans” wordmark is friendly and rounded — deliberately warm and human, the typographic partner to the Heart. Moving from the neutral Helvetica of the old identity to a bespoke, softer sans in 2014 was a smart choice: it gives the brand a distinctive, ownable voice and reinforces the approachable, fun personality that sets Southwest apart from more corporate carriers. The rounded letterforms feel welcoming and optimistic, matching the “LUV” theme and the bright tricolour palette. Because Southwest Sans is a documented custom face (built with Monotype), it’s a genuine brand asset rather than an off-the-shelf font. The typography behaves like the brand: warm, friendly and unmistakably human — an airline that wants you to feel liked.

Southwest turned a budget airline into a brand about love.

Southwest is a lesson in giving a category a personality. Low-cost flying could easily feel cheap and joyless, but Southwest built its entire brand around the opposite feeling — love — from the LUV ticker and Love Field origin to the 2014 Heart, the warm palette, the friendly custom typeface and the famously humorous voice. That warmth, paired with genuinely customer-friendly policies (for years, free checked bags), made Southwest beloved in a way few airlines are, and turned a budget carrier into a brand people actually rooted for. The Heart isn’t just a logo; it’s the summary of a whole personality.

For designers and brand-builders, Southwest offers a distinctive takeaway: personality and emotion can differentiate a brand even in a commoditised, price-driven category. The lessons: a warm, human brand identity (a heart, warm colours, a friendly voice) can set a low-cost or utilitarian business apart on feeling; grounding a theme in something real (the LUV ticker, Love Field) makes it authentic rather than gimmicky; and a bespoke, friendly typeface (Southwest Sans) is worth commissioning to own your voice. It’s also a reminder to keep facts honest — Southwest was founded by Kelleher and King (the napkin story is apocryphal), the Heart is a 2014 identity, and once-signature policies like “Bags Fly Free” have since changed. Southwest turned a budget airline into a brand about love — proof that personality and warmth can be a powerful competitive edge.

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