Recognised as Colour

#BB4425

#BB4425
Red
Dark
Nearest: Firebrick

#BB4425 is a red with RGB values 187, 68, 37 and HSL 12°, 67%, 44%. It is a dark colour, so white text on it reaches 5.3:1 contrast (AA for normal text). The nearest named colour is Firebrick.

Colour values

#BB4425#BB4425

HEX#BB4425

RGBrgb(187, 68, 37)

RGB (0–1)0.7333, 0.2667, 0.1451

RGB percentages73.3%, 26.7%, 14.5%

HSLhsl(12.4, 67%, 43.9%)

HSV / HSBhsv(12.4, 80.2%, 73.3%)

CMYK0%, 63.6%, 80.2%, 26.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer12,272,677

CSS custom property--colour: #BB4425;

Brightness & contrast

Relative luminance0.14833WCAG 2.x, 0 is black and 1 is white

Perceived brightness115.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.29:1

Contrast with white5.29:1WCAG normal text: AA

Contrast with black3.97:1WCAG normal text: Fail

Greyscale equivalent#5B5B5B

Inverted#44BBDA

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#665B20no red cones; affects about 1% of men; ΔE 50.9 from the original

Deuteranopia#837520no green cones; the most common form, about 1% of men; ΔE 51.2 from the original

Tritanopia#CE243Eno blue cones; rare, and affects men and women equally; ΔE 22.3 from the original

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

Contrast with white, large text5.29:1WCAG large text: AAA

Contrast with black, large text3.97:1WCAG large text: AA

Named colours

Firebrick · ΔE 12.5 Brown · ΔE 15 Dark red · ΔE 18 Sienna · ΔE 18.6 Chocolate · ΔE 19.8 Maroon · ΔE 20.5

Nearest named CSS colourFirebrick (#B22222)ΔE 12.52, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#259CBB

Analogous#BB2551, #BB8F25

Triadic#25BB44, #4425BB

Split complementary#25BB8F, #2551BB

Tetradic#51BB25, #259CBB, #8F25BB

Tints, shades & saturation

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

Lighter +40%#F1C6BB

Lighter +30%#E9A290

Lighter +20%#E17F65

Lighter +10%#D85B3B

Darker −10%#90351D

Darker −20%#662514

Darker −30%#3B160C

Darker −40%#110603

More saturated +25%#D73409

Less saturated −25%#9F5441

Channel breakdown

R187

G68

B37

Red187 (73.3%)

Green68 (26.7%)

Blue37 (14.5%)

Hue12.4°

Saturation (HSL)66.96%

Lightness43.92%

Dominant channelRed

Hex per channelR BB · G 44 · B 25

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Harmonies

Lighter and darker

Similar named colours

Also reads as

BB4425 (chemical formula)

Formula
47,845.06 g/mol
4426 atoms

BB4425 has a molar mass of 47,845.06 g/mol, made up of 4426 atoms across 1 element: 4426 × B.

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Molar mass

Molar mass47,845.06 g/mol

Total atoms per molecule4426

Distinct elements1

Mass of one molecule7.9448591 × 10^-20 g

Molecules per gram1.2586756 × 10^19

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 × 4426)47,845.06 g/mol, 100%

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Elements in this formula

Boron

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