The main color (MC) forms knit columns on the right side (RS) of the work; the
contrast color (CC) forms knit columns on the wrong side and purl columns on
the RS. Unlike single-color brioche stitch, both knit and purl brioche stitches
are used in two-color brioche. The fundamentals are the same: the pattern
alternates between creating a slipped stitch-yarnover pair (yf sl1yo) and working
the pair formed in the previous row together as one stitch (either as brk or brp).

To maintain the pattern and color integrity, the colors alternate every row and
two wrong-side rows are followed by two right-side rows. To do this, you’ll need
to use circular or double-pointed needles so that the stitches can be slid to the
opposite needle tip and worked again without turning the work.

2-Color Brioche Stitch using an even number of stitches
To begin, loosely cast on (long tail over 2 needles) an even number of stitches
with MC using circular or double-pointed needles. Do not turn work.
Prep Row RS CC (forms purl columns in CC on RS): slide work to other tip of
needle and attach CC, wyif, *sl1yof, p1; rep from *. Turn work.
Row 1 WS MC (forms purl columns in MC): wyif, *sl1yof, brp1; rep from *.
Do not turn work.
Row 1 WS CC (forms knit columns in CC): slide work to other tip of needle
where CC is hanging. With CC, *brk1, yf sl1yo; rep from *. Turn work.
Row 2 RS MC (forms knit columns in MC): maintain the CC yo of last worked st
by holding it under left needle to the back, with MC, *brk1, yf sl1yo; rep from *.
Do not turn work.
Row 2 RS CC (forms purl columns in CC): slide work to other tip of needle
where CC is hanging. With CC, wyif, *sl1yof, brp1; rep from *. Be sure and
maintain the yo of the last stitch so that you end with a brp. Turn work.
Repeat Rows 1 and 2 RS and WS.

3-color Plain Brioche - same on front and back

3-color Plain Brioche - Right and Wrong side

4-color Plain Brioche - Right side

4-color Plain Brioche - Wrong side

To create this colorful reversible fabric, repeat the four colors in the same order:
colors A and C appear in the knit column on the RS, whereas colors B and D
appear in the knit column on the WS.

Cast on, very loosely, an even number of sts in color A on circular or double-pointed needles.
Prep row WS with B: *k1, yf sl1yo, rep from *.
Row 1 RS with C: *brk1, yf sl1yo, rep from *.
Row 2 WS with D: rep row 1. Do not turn work. Slide sts to other end of needle.
Row 3 WS with A: wyif, *sl1yof, brp1, rep from *
Row 4 RS with B: rep row 3.
Row 5 WS with C: rep row 3.
Row 6 RS with D: rep row 3. Do not turn work.
Slide sts to other end of needle.
Row 7 RS with A: rep row 1.
Row 8 WS with B: rep row 1.
Rep rows 1 through 8.

5-color Plain Brioche - Right and Wrong side