Coats Sylko B4640 Dark Royal Blue

HEX #2c3787 · RGB 44, 55, 135 · CIELAB L 27 a 23 b -46

Coats Sylko B4640 Dark Royal Blue is a very dark, vivid purple (HEX #2c3787). Its nearest Pantone reference is PANTONE 661 C. The closest substitutes are Isacord 40 3522 Blue, Marathon Polyester 2068 Blue, Marathon Rayon 1254 Blue, Robison-Anton Super Brite Rayon 2220 Blue.

Open in converter Shop this thread ↗ Full Coats Sylko chart

Pantone approximation

PANTONE 661 C #2d338e Very close ΔE 2.1
PANTONE 287 C #003893 Close ΔE 4.0
PANTONE 288 C #00337f Close ΔE 4.3

Equivalent colors in other brands

Brand	Number	Name	HEX	Match	Alternatives
Brother Embroidery full chart	406	Ultramarine	#0b3d91	Close ΔE 4.5	007 614
Fil-Tec Glide full chart	30661	Royal	#003596	Close ΔE 3.8	30287 30288
Floriani Polyester full chart	366	Bluejay	#2e4075	Approximate ΔE 5.1	O55 367
Gunold POLY 40 full chart	61143	True Blue	#39408e	Close ΔE 3.0	61460 61424
Hemingworth PolySelect full chart	1204	Brilliant Blue	#00338d	Close ΔE 3.6	1263 1261
Isacord 40 full chart	3522	Blue	#2d338e	Very close ΔE 2.1	3612 3335
Janome Polyester full chart	207	Blue	#0b2f84	Close ΔE 3.5	262 232
Madeira Classic Rayon 40 full chart	1366	Violet Blue	#2c356b	Approximate ΔE 5.1	1322 1166
Madeira Polyneon 40 full chart	1767	Royal	#263d76	Close ΔE 4.6	1722 1676
Marathon Polyester full chart	2068	Blue	#2f348e	Very close ΔE 1.9	2069 2070
Marathon Rayon full chart	1254	Blue	#2f348e	Very close ΔE 1.9	1084 1202
Mettler Poly Sheen full chart	3335	Flag Blue	#343e92	Close ΔE 2.5	3353 3543
Robison-Anton Super Brite Rayon full chart	2220	Blue	#2d338e	Very close ΔE 2.1	2280 2385
Robison-Anton Super Strength Polyester full chart	5685	Jamie Blue	#003478	Approximate ΔE 5.3	5587 5520
Sulky PolyLite / Poly Deco full chart	61143	Flag Blue	#39408e	Close ΔE 3.0	61460 61424
Sulky Rayon 40 full chart	526	Cobalt Blue	#113675	Close ΔE 5.0	1535 1242

Match quality is the CIEDE2000 color difference (ΔE00) computed from screen RGB values. Always confirm with a physical thread card.

Similar colors within Coats Sylko

B7401 Dark Royal Blue B7415 Dark Royal Blue B7323 Dark Royal Blue B4653 Medium Royal Blue

Frequently asked questions

What is the Brother Embroidery equivalent of Coats Sylko B4640?

The closest match is Isacord 40 3522 Blue.

What Pantone color is closest to Coats Sylko B4640 Dark Royal Blue?

PANTONE 661 C (#2d338e) is the nearest approximation, with a CIEDE2000 difference of 2.1.