MLBB Lip Liner, Measured

Quick Answer

"One or two shades deeper than your natural lip" is unactionable advice because nobody defines a shade. Measured in lightness on a 0-to-1 scale, an MLBB liner sits roughly 0.05 to 0.10 below your natural lip value. Find your natural lip depth, take the band at or just under it, then let your colour season choose between the cool and warm version. Depth first, undertone second — getting depth wrong is what makes a lip look like makeup.

Why the standard advice fails

Every brand guide and magazine gives the same instruction: go one or two shades deeper than your natural lip. It sounds precise. It isn't. A shade is not a unit, no two brands agree on one, and the advice never says deeper in what direction — browner, redder, or simply darker.

The naming makes it worse. Here is what happens when you take every lip liner in the catalog with a measured swatch value and group by the word on the packaging.

Shade name	Products	Distinct hex values	Brands	Lightness range
nude	61	60	20	`0.20 – 0.81`
pink	50	49	21	`0.10 – 0.88`
rose	36	36	19	`0.25 – 0.88`
brown	38	32	15	`0.14 – 0.86`
mauve	25	22	18	`0.31 – 0.78`
plum	19	19	14	`0.21 – 0.75`
spice	17	17	11	`0.39 – 0.65`
berry	14	14	13	`0.08 – 0.69`
cocoa	11	11	7	`0.22 – 0.52`

The third column is the problem. Products sold under the same one-word name span dozens of genuinely different colours, and the lightness column shows those ranges overlapping almost completely. You cannot buy a "nude" liner and know what you are getting.

Not sure of your season yet? Take the free colour quiz — it takes about 2 minutes.

The terms, defined

MLBB. "My lips but better." A lip product close enough to your natural lip colour that it reads as your own mouth rather than as makeup. Defined against your lips, not against your skin — which is what separates it from a nude.

Lightness. How light or dark a colour is on a scale from 0 (black) to 1 (white). This is the dimension that decides whether a liner reads as natural or as product. Lip liners in this catalog run from about 0.10 to 0.88.

The MLBB offset. The gap between your natural lip lightness and the liner that will look like a better version of it. Measured across the catalog, useful liners sit roughly 0.05 to 0.10 below the natural lip value. Below about 0.15 the liner stops reading as your lip and starts reading as a lip liner.

Undertone. Whether the colour leans blue (cool) or gold (warm) underneath. Cool seasons want the blue-based version of their depth band; warm seasons want the gold-based one. Undertone decides whether a correct-depth liner looks flattering or slightly grey.

Find your band, then your undertone

Two steps. First, identify your natural lip depth from the five bands below — look at the middle of your lower lip in daylight, without product, since the edges are always deeper. Then pick the undertone column that matches your season.

The bands below are computed from 1040 lip liners across 56 brands, sorted by measured lightness rather than by shade name.

Very light natural lips

Barely-there lips — the natural colour is close to the surrounding skin. 192 liners in the catalog sit in this band. If this is your natural depth, the liners below sit at or just under it — close enough to read as your own lip, defined enough to show.