Recognised as Colour

#AC2226

#AC2226
Red
Dark
Nearest: Firebrick

#AC2226 is a red with RGB values 172, 34, 38 and HSL 358°, 67%, 40%. It is a dark colour, so white text on it reaches 7:1 contrast (AA for normal text). The nearest named colour is Firebrick.

Colour values

#AC2226#AC2226

HEX#AC2226

RGBrgb(172, 34, 38)

RGB (0–1)0.6745, 0.1333, 0.149

RGB percentages67.5%, 13.3%, 14.9%

HSLhsl(358.3, 67%, 40.4%)

HSV / HSBhsv(358.3, 80.2%, 67.5%)

CMYK0%, 80.2%, 77.9%, 32.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,280,934

CSS custom property--colour: #AC2226;

Brightness & contrast

Relative luminance0.10055WCAG 2.x, 0 is black and 1 is white

Perceived brightness98.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6.97:1

Contrast with white6.97:1WCAG normal text: AA

Contrast with black3.01:1WCAG normal text: Fail

Greyscale equivalent#404040

Inverted#53DDD9

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#4E4624no red cones; affects about 1% of men; ΔE 58.1 from the original

Deuteranopia#706420no green cones; the most common form, about 1% of men; ΔE 58.4 from the original

Tritanopia#BE0025no blue cones; rare, and affects men and women equally; ΔE 11.3 from the original

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

Contrast with white, large text6.97:1WCAG large text: AAA

Contrast with black, large text3.01:1WCAG large text: AA

Named colours

Firebrick · ΔE 4.4 Brown · ΔE 5.6 Dark red · ΔE 12.8 Maroon · ΔE 14.5 Crimson · ΔE 19 Indian red · ΔE 21.5

Nearest named CSS colourFirebrick (#B22222)ΔE 4.38, a close match

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#22ACA8

Analogous#AC226B, #AC6322

Triadic#26AC22, #2226AC

Split complementary#22AC63, #226BAC

Tetradic#6BAC22, #22ACA8, #6322AC

Tints, shades & saturation

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

Lighter +40%#EEACAD

Lighter +30%#E68184

Lighter +20%#DE565A

Lighter +10%#D52C31

Darker −10%#811A1D

Darker −20%#571113

Darker −30%#2C090A

Darker −40%#020000

More saturated +25%#C6080E

Less saturated −25%#923C3E

Channel breakdown

R172

G34

B38

Red172 (67.5%)

Green34 (13.3%)

Blue38 (14.9%)

Hue358.26°

Saturation (HSL)66.99%

Lightness40.39%

Dominant channelRed

Hex per channelR AC · G 22 · B 26

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

Harmonies

Lighter and darker

Similar named colours

Also reads as

Ac2226 (chemical formula)

Formula
505,302 g/mol
2226 atoms

Ac2226 has a molar mass of 505,302 g/mol, made up of 2226 atoms across 1 element: 2226 × Ac.

Open this reading on its own page →

Molar mass

Molar mass505,302 g/mol

Total atoms per molecule2226

Distinct elements1

Mass of one molecule8.3907371 × 10^-19 g

Molecules per gram1.1917904 × 10^18

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 × 2226)505,302 g/mol, 100%

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

Elements in this formula

Actinium

Nerdulate something else

Nothing in mind? Surprise me · today’s page