Recognised as Colour

#B74429

#B74429
Red
Dark
Nearest: Firebrick

#B74429 is a red with RGB values 183, 68, 41 and HSL 11°, 63%, 44%. It is a dark colour, so white text on it reaches 5.4:1 contrast (AA for normal text). The nearest named colour is Firebrick.

Colour values

#B74429#B74429

HEX#B74429

RGBrgb(183, 68, 41)

RGB (0–1)0.7176, 0.2667, 0.1608

RGB percentages71.8%, 26.7%, 16.1%

HSLhsl(11.4, 63.4%, 43.9%)

HSV / HSBhsv(11.4, 77.6%, 71.8%)

CMYK0%, 62.8%, 77.6%, 28.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer12,010,537

CSS custom property--colour: #B74429;

Brightness & contrast

Relative luminance0.14362WCAG 2.x, 0 is black and 1 is white

Perceived brightness113.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.42:1

Contrast with white5.42:1WCAG normal text: AA

Contrast with black3.87:1WCAG normal text: Fail

Greyscale equivalent#5A5A5A

Inverted#48BBD6

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#645A25no red cones; affects about 1% of men; ΔE 49.6 from the original

Deuteranopia#817325no green cones; the most common form, about 1% of men; ΔE 49.4 from the original

Tritanopia#C9273Fno blue cones; rare, and affects men and women equally; ΔE 21 from the original

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

Contrast with white, large text5.42:1WCAG large text: AAA

Contrast with black, large text3.87:1WCAG large text: AA

Named colours

Firebrick · ΔE 12.4 Brown · ΔE 12.7 Sienna · ΔE 16.4 Dark red · ΔE 17.7 Maroon · ΔE 19.5 Indian red · ΔE 19.8

Nearest named CSS colourFirebrick (#B22222)ΔE 12.38, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#299CB7

Analogous#B72955, #B78B29

Triadic#29B744, #4429B7

Split complementary#29B78B, #2955B7

Tetradic#55B729, #299CB7, #8B29B7

Tints, shades & saturation

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

Lighter +40%#F0C6BC

Lighter +30%#E7A292

Lighter +20%#DD7F69

Lighter +10%#D45B3F

Darker −10%#8D3520

Darker −20%#642516

Darker −30%#3A160D

Darker −40%#100604

More saturated +25%#D3330D

Less saturated −25%#9B5545

Channel breakdown

R183

G68

B41

Red183 (71.8%)

Green68 (26.7%)

Blue41 (16.1%)

Hue11.41°

Saturation (HSL)63.39%

Lightness43.92%

Dominant channelRed

Hex per channelR B7 · G 44 · B 29

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Harmonies

Lighter and darker

Similar named colours

Also reads as

B74429 (chemical formula)

Formula
804,577.49 g/mol
74429 atoms

B74429 has a molar mass of 804,577.49 g/mol, made up of 74429 atoms across 1 element: 74429 × B.

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Molar mass

Molar mass804,577.49 g/mol

Total atoms per molecule74429

Distinct elements1

Mass of one molecule1.3360324 × 10^-18 g

Molecules per gram7.4848487 × 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

B100%

Boron (B × 74429)804,577.49 g/mol, 100%

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Elements in this formula

Boron

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