Colour of Compounds

Pb(OH)₂·2PbCO₃

ZnCO₃·3Zn(OH)₂

Mg(OH)₂·4MgCO₃·6H₂O

Ag₂SO₃

AgNO₂ — White (crystalline)

CH₃CO₂Ag

HCO₂Ag

Ag₂C₂O₄

Hg₂Cl₂

CaC₂O₄

SrC₂O₄

BaC₂O₄

(HCO₂)₂Hg

AgCl

PbCl₂

PbBr₂

CuI

BaHPO₄

Mg(NH₄)PO₄

CaCO₃

SrCO₃

BaCO₃

AgCN

Pb(CN)₂

Cu(CN)

Cd(CN)₂

Zn₃[Fe(CN)₆]₂

K₂Fe[Fe(CN)₆]

Pb₃(PO₄)₂

Hg₂HPO₄

AlPO₄

Zn₃(PO₄)₂

Ba₃(PO₄)₂

Mg(OH)₂

K₂Ca[Fe(CN)₆]

KHC₄H₄O₆

(NH₄)HC₄H₄O₆

KClO₄

Zn[Hg(SCN)₄]

CuSCN

CuSO₄·H₂O — Bluish white

Ag₂S₂O₃

PbS₂O₃

HgS₂O₃

Bi₂(S₂O₃)₃

Cu₂S₂O₃

BaSO₄

PbSO₄

ZnS

Al(OH)₃

Zn(OH)₂

Mn(OH)₂

CdS

AgI

PbI₂

AgBr — Pale yellow

Ag₃PO₄

HgSO₄·2HgO

SrCrO₄

BaCrO₄

PbCrO₄

K₂CrO₄ (CrO₄²⁻)

FePO₄

K₃[Co(NO₂)₆]

(NH₄)₃[Co(NO₂)₆]

K₂[PtCl₆]

(NH₄)₂[PtCl₆]

KZn[Co(CN)₆]

Cu(CN)₂

(NH₄)₃[P(Mo₃O₁₀)₄] — Canary yellow

Bi(C₆H₃O₃) (bismuth pyrogallate)

Fluorescein

PbO (Massicot)

ZnO (hot)

Ag₂CO₃ — Very light yellow

Hg₂CO₃

As₂S₃

As₂S₅

SnS₂

Ag₂S

PbS

FeS

NiS

CoS

MnO(OH)₂

Hg (free metal)

Cu(SCN)₂

CuO

Ag₂O — Brownish black

BiI₃ — Brownish black

HgS

Hg + HgS

CuS

Cu₂S

Bi₂S₃ — Brownish black

HgO·Hg(NH₂)I — Brown

Fe(CN)₂ — Yellowish brown

Fe(CN)₃ — Reddish brown

Ag₂Cr₂O₇ — Reddish brown

Cu₂[Fe(CN)₆] — Chocolate brown

Fe[Fe(CN)₆] — Brown colouration

KI₃ — Dark brown

[Co(NH₃)₆]²⁺ (solution) — Brownish yellow

SnS — Brown

HgCO₃·3HgO — Reddish brown

Fe(OH)₃ — Reddish brown

Fe(SCN)₃ — Blood red

Fe(OH)₂(CH₃CO₂)

Fe(OH)₂(HCO₂)

[Mn(C₂O₄)₃]³⁻ — Red colouration

Ag₂CrO₄ — Brick red

Hg₂CrO₄ — Brick red

CrO₃ — Dark red (crystals)

HgI₂ — Scarlet red

Eosin (tetrabromofluorescein)

Ni(DMG)₂ — Rosy red

[Fe(dipy)₃]²⁺ — Red colouration

[Fe(C₁₂H₈N₂)₃]²⁺ — Red colouration

PbO (Litharge)

Cu₂O — Brick red

Tetrachromate (Cr₄O₁₃²⁻) — Dark red

CoCl₂·6H₂O

CoCl₂·4H₂O

Co(OH)₂

[Co(NH₃)₆]³⁺ (solution)

Mn₃(PO₄)₂

MnS — Buff / flesh

K₂Cr₂O₇ (Cr₂O₇²⁻)

Trichromate (Cr₃O₁₀²⁻) — Orange-red

[BiI₄]⁻ (solution) — Orange to yellow

Sb₂S₃

Cu(OH)₂·CuCO₃

Hg₂I₂

[Cr(OH)₄]⁻ (solution)

Cu₃[Fe(CN)₆]₂

CoO·ZnO / Co[ZnO₂] (Rinmann's green)

Cr₂O₃

FeSO₄·7H₂O (green vitriol)

Cr(OH)₃

Fe(OH)₂ — Dirty green

Ni(OH)₂

Cl₂ (gas) — Greenish yellow

I₂ + starch — Deep blue

CuSO₄·5H₂O (blue vitriol)

CoCl₂ (anhydrous)

[Ni(NH₃)₆]²⁺ (solution) — Deep blue

Fe₄[Fe(CN)₆]₃ (Prussian blue)

Fe₃[Fe(CN)₆]₂ (Turnbull's blue)

Cu(OH)₂

[Cu(NH₃)₄]²⁺ (solution) — Deep blue

[Ni(en)₃]S₂O₃ — Violet

Cu[Hg(SCN)₄]·Zn[Hg(SCN)₄] — Violet

CoCl₂·2H₂O — Red violet

MnO₄⁻ — Intense purple

Hg + HgO

[HgS₂]²⁻ — Colourless

[PbI₄]²⁻ — Colourless

[HgI₄]²⁻ — Colourless

[Ag(CN)₂]⁻ — Colourless

[Cd(CN)₄]²⁻ — Colourless

[Cu(CN)₄]³⁻ — Colourless

[Cu(SCN)₄]³⁻ — Colourless

[FeF₆]³⁻ — Colourless

[Ag(S₂O₃)₂]³⁻ — Colourless

[Pb(S₂O₃)₂]²⁻ — Colourless

[Hg(S₂O₃)₂]²⁻ — Colourless

[Bi(S₂O₃)₃]³⁻ — Colourless

[Cu₆(S₂O₃)₅]⁴⁻ — Colourless