Recognised as Colour

#AC7F51

#AC7F51
Orange
Dark
Nearest: Peru

#AC7F51 is a orange with RGB values 172, 127, 81 and HSL 30°, 36%, 50%. It is a dark colour, so black text on it reaches 5.9:1 contrast (AA for normal text). The nearest named colour is Peru.

Colour values

#AC7F51#AC7F51

HEX#AC7F51

RGBrgb(172, 127, 81)

RGB (0–1)0.6745, 0.498, 0.3176

RGB percentages67.5%, 49.8%, 31.8%

HSLhsl(30.3, 36%, 49.6%)

HSV / HSBhsv(30.3, 52.9%, 67.5%)

CMYK0%, 26.2%, 52.9%, 32.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,304,785

CSS custom property--colour: #AC7F51;

Brightness & contrast

Relative luminance0.24543WCAG 2.x, 0 is black and 1 is white

Perceived brightness138.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.91:1

Contrast with white3.55:1WCAG normal text: Fail

Contrast with black5.91:1WCAG normal text: AA

Greyscale equivalent#858585

Inverted#5380AE

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#8E824Dno red cones; affects about 1% of men; ΔE 15.4 from the original

Deuteranopia#988C52no green cones; the most common form, about 1% of men; ΔE 15.9 from the original

Tritanopia#B97574no blue cones; rare, and affects men and women equally; ΔE 24.7 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text3.55:1WCAG large text: AA

Contrast with black, large text5.91:1WCAG large text: AAA

Named colours

Peru · ΔE 19.5 Tan · ΔE 20.9 Burlywood · ΔE 21 Dark salmon · ΔE 21.4 Sienna · ΔE 22 Sandy brown · ΔE 25.6

Nearest named CSS colourPeru (#CD853F)ΔE 19.52, a distinctly different colour

Hue familyorange

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#517EAC

Analogous#AC5151, #ACAC51

Triadic#51AC7F, #7F51AC

Split complementary#51ACAC, #5251AC

Tetradic#51AC51, #517EAC, #AC51AC

Tints, shades & saturation

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

Lighter +40%#EEE5DB

Lighter +30%#DECBB8

Lighter +20%#CDB296

Lighter +10%#BD9873

Darker −10%#896541

Darker −20%#674C30

Darker −30%#443220

Darker −40%#211910

More saturated +25%#CC7F31

Less saturated −25%#8C7F71

Channel breakdown

R172

G127

B81

Red172 (67.5%)

Green127 (49.8%)

Blue81 (31.8%)

Hue30.33°

Saturation (HSL)35.97%

Lightness49.61%

Dominant channelRed

Hex per channelR AC · G 7F · B 51

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Harmonies

Lighter and darker

Similar named colours

Also reads as

Ac7F51 (chemical formula)

Formula
2,557.898 g/mol
58 atoms

Ac7F51 has a molar mass of 2,557.898 g/mol, made up of 58 atoms across 2 elements: 7 × Ac, 51 × F.

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Molar mass

Molar mass2,557.898 g/mol

Total atoms per molecule58

Distinct elements2

Mass of one molecule4.2474896 × 10^-21 g

Molecules per gram2.3543319 × 10^20

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

Ac62.1%

F37.9%

Actinium (Ac × 7)1,589 g/mol, 62.121%

Fluorine (F × 51)968.898 g/mol, 37.879%

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Elements in this formula

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