Recognised as Colour

#AC6837

#AC6837
Orange
Dark
Nearest: Sienna

#AC6837 is a orange with RGB values 172, 104, 55 and HSL 25°, 52%, 45%. It is a dark colour, so black text on it reaches 4.8:1 contrast (AA for normal text). The nearest named colour is Sienna.

Colour values

#AC6837#AC6837

HEX#AC6837

RGBrgb(172, 104, 55)

RGB (0–1)0.6745, 0.4078, 0.2157

RGB percentages67.5%, 40.8%, 21.6%

HSLhsl(25.1, 51.5%, 44.5%)

HSV / HSBhsv(25.1, 68%, 67.5%)

CMYK0%, 39.5%, 68%, 32.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,298,871

CSS custom property--colour: #AC6837;

Brightness & contrast

Relative luminance0.18947WCAG 2.x, 0 is black and 1 is white

Perceived brightness124.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 4.79:1

Contrast with white4.38:1WCAG normal text: Fail

Contrast with black4.79:1WCAG normal text: AA

Greyscale equivalent#737373

Inverted#5397C8

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#7C6F32no red cones; affects about 1% of men; ΔE 26.5 from the original

Deuteranopia#8C7F37no green cones; the most common form, about 1% of men; ΔE 27.5 from the original

Tritanopia#BC5A5Dno blue cones; rare, and affects men and women equally; ΔE 27.2 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text4.38:1WCAG large text: AA

Contrast with black, large text4.79:1WCAG large text: AAA

Named colours

Sienna · ΔE 9.8 Saddle brown · ΔE 13.9 Peru · ΔE 14.7 Dark salmon · ΔE 22.7 Chocolate · ΔE 23.8 Sandy brown · ΔE 24.8

Nearest named CSS colourSienna (#A0522D)ΔE 9.83, clearly different but related

Hue familyorange

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#377BAC

Analogous#AC3740, #ACA337

Triadic#37AC68, #6837AC

Split complementary#37ACA2, #3741AC

Tetradic#41AC37, #377BAC, #A237AC

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#ECD4C3

Lighter +30%#E0B99C

Lighter +20%#D39D76

Lighter +10%#C7814F

Darker −10%#85512B

Darker −20%#5F391E

Darker −30%#382212

Darker −40%#110B06

More saturated +25%#C8631B

Less saturated −25%#906D53

Channel breakdown

R172

G104

B55

Red172 (67.5%)

Green104 (40.8%)

Blue55 (21.6%)

Hue25.13°

Saturation (HSL)51.54%

Lightness44.51%

Dominant channelRed

Hex per channelR AC · G 68 · B 37

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Harmonies

Lighter and darker

Similar named colours

Also reads as

Ac6837 (chemical formula)

Formula
1,551,999 g/mol
6837 atoms

Ac6837 has a molar mass of 1,551,999 g/mol, made up of 6837 atoms across 1 element: 6837 × Ac.

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Molar mass

Molar mass1,551,999 g/mol

Total atoms per molecule6837

Distinct elements1

Mass of one molecule2.577155 × 10^-18 g

Molecules per gram3.8802478 × 10^17

Name

NameNot in the name tablea name cannot be worked out from a formula alone: isomers share formulas, and naming depends on bonding the formula does not show

Composition by mass

Ac100%

Actinium (Ac × 6837)1,551,999 g/mol, 100%

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Elements in this formula

Actinium

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