Recognised as Colour

#AC5351

#AC5351
Red
Dark
Nearest: Indian red

#AC5351 is a red with RGB values 172, 83, 81 and HSL 1°, 36%, 50%. It is a dark colour, so white text on it reaches 5.1:1 contrast (AA for normal text). The nearest named colour is Indian red.

Colour values

#AC5351#AC5351

HEX#AC5351

RGBrgb(172, 83, 81)

RGB (0–1)0.6745, 0.3255, 0.3176

RGB percentages67.5%, 32.5%, 31.8%

HSLhsl(1.3, 36%, 49.6%)

HSV / HSBhsv(1.3, 52.9%, 67.5%)

CMYK0%, 51.7%, 52.9%, 32.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,293,521

CSS custom property--colour: #AC5351;

Brightness & contrast

Relative luminance0.15551WCAG 2.x, 0 is black and 1 is white

Perceived brightness116.8 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.11:1

Contrast with white5.11:1WCAG normal text: AA

Contrast with black4.11:1WCAG normal text: Fail

Greyscale equivalent#666666

Inverted#53ACAE

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#676250no red cones; affects about 1% of men; ΔE 38.6 from the original

Deuteranopia#7E754Fno green cones; the most common form, about 1% of men; ΔE 39.1 from the original

Tritanopia#BB4553no blue cones; rare, and affects men and women equally; ΔE 12.4 from the original

Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning

Contrast with white, large text5.11:1WCAG large text: AAA

Contrast with black, large text4.11:1WCAG large text: AA

Named colours

Indian red · ΔE 11.7 Sienna · ΔE 18.7 Brown · ΔE 20.2 Light coral · ΔE 20.9 Pale violetred · ΔE 24.7 Salmon · ΔE 25.1

Nearest named CSS colourIndian red (#CD5C5C)ΔE 11.73, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#51AAAC

Analogous#AC517C, #AC8151

Triadic#51AC53, #5351AC

Split complementary#51AC81, #517CAC

Tetradic#7CAC51, #51AAAC, #8151AC

Tints, shades & saturation

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

Lighter +40%#EEDBDB

Lighter +30%#DEB9B8

Lighter +20%#CD9796

Lighter +10%#BD7573

Darker −10%#894241

Darker −20%#673230

Darker −30%#442120

Darker −40%#211010

More saturated +25%#CC3531

Less saturated −25%#8C7171

Channel breakdown

R172

G83

B81

Red172 (67.5%)

Green83 (32.5%)

Blue81 (31.8%)

Hue1.32°

Saturation (HSL)35.97%

Lightness49.61%

Dominant channelRed

Hex per channelR AC · G 53 · B 51

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Harmonies

Lighter and darker

Similar named colours

Also reads as

Ac5351 (chemical formula)

Formula
1,214,677 g/mol
5351 atoms

Ac5351 has a molar mass of 1,214,677 g/mol, made up of 5351 atoms across 1 element: 5351 × Ac.

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Molar mass

Molar mass1,214,677 g/mol

Total atoms per molecule5351

Distinct elements1

Mass of one molecule2.0170186 × 10^-18 g

Molecules per gram4.9578125 × 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 × 5351)1,214,677 g/mol, 100%

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Elements in this formula

Actinium

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