How do I use two sref codes in one Midjourney prompt?

List them after --sref separated by spaces: --sref 627426282 163023829. Midjourney blends the two styles. Add ::N after a code to weight it, for example --sref 627426282::2 163023829 makes the first style twice as influential.

What does :: do after a sref code?

:: sets the relative weight of that reference against the others. Weights are relative, so ::2 and ::1 is the same mix as ::4 and ::2. Codes without a weight count as ::1.

What is the difference between :: and --sw?

:: balances the references against each other; --sw sets how strongly the combined style applies to the whole image, from 0 to 1000 with 100 as the default.

Which sref codes combine well?

Codes that share a medium and a palette family blend predictably; codes with opposite moods make the result unpredictable. Every SREF.ai style page lists the styles it combines well with, and the Remix tool builds the weighted command for any pair.

Guide · Combining style references

Combining sref codes with weights.

Midjourney accepts more than one style reference in a prompt. List the codes after --sref, weight each with ::, and set the overall strength with --sw. The result is a blend that none of the codes gives on its own, which is how most of the remixes on SREF.ai were made.

The syntax

a quiet harbour at dawn --sref 627426282::2 163023829 --sw 300

--sref 627426282 163023829: two codes, equal influence.
627426282::2: this code counts twice as much as a code with no weight (::1). Weights are relative, so ::2 ::1 is the same mix as ::4 ::2. Decimals such as ::0.5 work.
--sw 300: how strongly the blended style applies to the whole image, from 0 to 1000; 100 is the default. The :: weights decide the mix, --sw decides the amount.
Image URLs and numeric codes can be mixed in one list: --sref https://sref.ai/thumbs/1016489012.jpg 1016489012.

Choosing a pair

Styles that share a medium (two paintings, two photographs) and sit in the same colour family blend predictably. Styles with opposite moods, say minimal and surreal, give stranger and less repeatable results, which can be the point. Every SREF.ai style page lists the styles it combines well with, scored by shared mood, medium and palette, and the Remix tool builds the weighted command for any pair with a slider for the blend.

Reading a remix recipe

SREF.ai remixes record the exact recipe that produced the preview, for example --sref 627426282::1 163023829::1 729047527::1, together with the full prompt, the seed and the model version. Copy the recipe as it is to reproduce the look, or change one weight to steer it.

Questions

How many codes can I combine?: Several; most useful blends use two or three. Past that, the influences average out and the result drifts towards a generic look.
Can an agent build these commands?: Yes. The SREF.ai MCP server and API expose build_sref_command, which validates codes, weights and --sw. See SREF.ai for agents.