Recognised as Colour

#AC1300

#AC1300
Red
Dark
Nearest: Firebrick

#AC1300 is a red with RGB values 172, 19, 0 and HSL 7°, 100%, 34%. It is a dark colour, so white text on it reaches 7.4:1 contrast (AAA for normal text). The nearest named colour is Firebrick.

Colour values

#AC1300#AC1300

HEX#AC1300

RGBrgb(172, 19, 0)

RGB (0–1)0.6745, 0.0745, 0

RGB percentages67.5%, 7.5%, 0%

HSLhsl(6.6, 100%, 33.7%)

HSV / HSBhsv(6.6, 100%, 67.5%)

CMYK0%, 89%, 100%, 32.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,277,056

CSS custom property--colour: #AC1300;

Brightness & contrast

Relative luminance0.09236WCAG 2.x, 0 is black and 1 is white

Perceived brightness95.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 7.38:1

Contrast with white7.38:1WCAG normal text: AAA

Contrast with black2.85:1WCAG normal text: Fail

Greyscale equivalent#323232

Inverted#53ECFF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#4B4100no red cones; affects about 1% of men; ΔE 62.1 from the original

Deuteranopia#6E6100no green cones; the most common form, about 1% of men; ΔE 61.5 from the original

Tritanopia#BE0013no blue cones; rare, and affects men and women equally; ΔE 8.8 from the original

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

Contrast with white, large text7.38:1WCAG large text: AAA

Contrast with black, large text2.85:1WCAG large text: Fail

Named colours

Firebrick · ΔE 13 Dark red · ΔE 13.7 Maroon · ΔE 18.7 Brown · ΔE 21.1 Crimson · ΔE 24.2 Tomato · ΔE 26.1

Nearest named CSS colourFirebrick (#B22222)ΔE 12.99, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#0099AC

Analogous#AC0043, #AC6900

Triadic#00AC13, #1300AC

Split complementary#00AC69, #0043AC

Tetradic#43AC00, #0099AC, #6900AC

Tints, shades & saturation

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

Lighter +40%#FF8879

Lighter +30%#FF5A46

Lighter +20%#FF2D13

Lighter +10%#DF1900

Darker −10%#790D00

Darker −20%#460800

Darker −30%#130200

Darker −40%#000000

More saturated +25%#AC1300

Less saturated −25%#972416

Channel breakdown

R172

G19

Red172 (67.5%)

Green19 (7.5%)

Blue0 (0%)

Hue6.63°

Saturation (HSL)100%

Lightness33.73%

Dominant channelRed

Hex per channelR AC · G 13 · B 00

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Harmonies

Lighter and darker

Similar named colours

Also reads as

Ac1300 (chemical formula)

Formula
295,100 g/mol
1300 atoms

Ac1300 has a molar mass of 295,100 g/mol, made up of 1300 atoms across 1 element: 1300 × Ac.

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Molar mass

Molar mass295,100 g/mol

Total atoms per molecule1300

Distinct elements1

Mass of one molecule4.9002508 × 10^-19 g

Molecules per gram2.0407119 × 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 × 1300)295,100 g/mol, 100%

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Elements in this formula

Actinium

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