Weeks Dye Works Hand-Dyed Floss

3900 — Kohl

Blacks family#1B181C

Looking up Weeks Dye Works 3900? It's Kohl, a very dark black shade (#1B181C / RGB 27, 24, 28). Scroll down for Crescent Colors, DMC, and Anchor equivalents ranked by visual similarity, plus 8 close Weeks Dye Works alternatives and curated color harmonies.

Hex
#1B181C
RGB
27, 24, 28
HSL
285°, 8%, 10%
Lab
8.7, 2.5, -2.3
Lightness
10%
Very dark
Saturation
8%
Neutral
Hue
285°
Family
Blacks

About Weeks Dye Works 3900

Weeks Dye Works 6-Strand Floss

Strands
6 strands
Sold as
5 yd skein

Brand Equivalents for Weeks Dye Works 3900

The five closest matches in each brand, ranked by CIEDE2000 perceptual color difference.

Weeks Dye Works 3900Kohl

Similar Weeks Dye Works Colors to 3900

Closest Weeks Dye Works threads by perceptual color distance, sorted from most to least similar.

Working with Weeks Dye Works 3900

On white fabric
17.6:1
On dark fabric
1.2:1
Temperature
neutral
Closest to
black

It pops on white and light fabric but nearly disappears on black, so pair it with a light or neutral ground.

Backstitch & outlines

Very dark shades like Weeks Dye Works 3900 (Kohl) are workhorses for backstitch outlines, lettering, and fine detail — the depth reads cleanly at a single strand over one.

Hand-dyed notes

As a hand-dyed floss, Weeks Dye Works 3900 (Kohl) varies gently within and between skeins — that is the charm. Reserve one dye lot per project and avoid stitching in strict rows to keep the mottling even.

Blending & gradients

Because Weeks Dye Works 3910 (Mascara) is so near (ΔE 1.99), the pair makes a natural two-step gradient — handy for shading skin, petals, or skies without a hard seam.

Color Harmonies for Weeks Dye Works 3900

Weeks Dye Works threads that pair well with 3900, based on color theory harmony rules in CIELAB color space.

Complementary
Opposite on the color wheel — maximum contrast
Analogous
Adjacent hues — smooth, natural transitions
Triadic
Evenly spaced at 120° — vibrant and balanced
Monochromatic
Same hue, different lightness — great for shading

Blacks Family

Weeks Dye Works3900 in context with nearby shades from the blacks color family.

About Weeks Dye Works 3900

Weeks Dye Works 3900 (Kohl) is a very dark, subdued shade in the blacks family. Expect a powerful and brooding look that suits night skies, silhouettes, and similar motifs. Cross stitch enthusiasts often reach for this thread when stitching calligraphy or cat designs.

Frequently Asked Questions

What does Weeks Dye Works 3900 look like?

Weeks Dye Works 3900 (Kohl) is a very dark shade in the blacks family with hex #1B181C and RGB 27, 24, 28. Stitchers reach for it in projects featuring outlines and lettering.

Which DMC thread matches Weeks Dye Works 3900?

The closest DMC match for Weeks Dye Works 3900 (Kohl) is DMC 310 (Black) with a 74% match based on visual color similarity. Other near matches include DMC 3371 (Black Brown, 68%) and DMC 939 (Navy Blue very dark, 63%).

What Weeks Dye Works colors are similar to 3900?

The closest Weeks Dye Works threads to 3900 are 3910 Mascara (ΔE 1.99), 1304 Onyx (ΔE 5.41), and 1303 Charcoal (ΔE 7.43). These are useful substitutes when 3900 is unavailable or for building gradients.

When should I use Weeks Dye Works 3900?

Reach for Weeks Dye Works 3900 (Kohl) when your project calls for outlines, lettering, bold contrast, dramatic backgrounds. Its very dark character carries both small accents and wider palette work; the harmony picks on this page show natural companions to 3900.

Is Weeks Dye Works 3900 (Kohl) good for backstitching and outlines?

Yes — very dark shades like 3900 are among the most-used backstitch and outlining colors. Work it in a single strand over one for crisp edges, lettering, and fine detail.