Recognised as Colour

#BB3019

#BB3019
Red
Dark
Nearest: Firebrick

#BB3019 is a red with RGB values 187, 48, 25 and HSL 9°, 76%, 42%. It is a dark colour, so white text on it reaches 5.9:1 contrast (AA for normal text). The nearest named colour is Firebrick.

Colour values

#BB3019#BB3019

HEX#BB3019

RGBrgb(187, 48, 25)

RGB (0–1)0.7333, 0.1882, 0.098

RGB percentages73.3%, 18.8%, 9.8%

HSLhsl(8.5, 76.4%, 41.6%)

HSV / HSBhsv(8.5, 86.6%, 73.3%)

CMYK0%, 74.3%, 86.6%, 26.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer12,267,545

CSS custom property--colour: #BB3019;

Brightness & contrast

Relative luminance0.12749WCAG 2.x, 0 is black and 1 is white

Perceived brightness109 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.92:1

Contrast with white5.92:1WCAG normal text: AA

Contrast with black3.55:1WCAG normal text: Fail

Greyscale equivalent#4C4C4C

Inverted#44CFE6

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#5B5014no red cones; affects about 1% of men; ΔE 58.6 from the original

Deuteranopia#7D6F0Fno green cones; the most common form, about 1% of men; ΔE 58.9 from the original

Tritanopia#CE002Dno blue cones; rare, and affects men and women equally; ΔE 17.2 from the original

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

Contrast with white, large text5.92:1WCAG large text: AAA

Contrast with black, large text3.55:1WCAG large text: AA

Named colours

Firebrick · ΔE 9.1 Dark red · ΔE 15.3 Brown · ΔE 16.7 Maroon · ΔE 19.5 Tomato · ΔE 20.2 Crimson · ΔE 21.4

Nearest named CSS colourFirebrick (#B22222)ΔE 9.06, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#19A4BB

Analogous#BB1953, #BB8119

Triadic#19BB30, #3019BB

Split complementary#19BB81, #1953BB

Tetradic#53BB19, #19A4BB, #8119BB

Tints, shades & saturation

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

Lighter +40%#F4B6AC

Lighter +30%#EE8F7F

Lighter +20%#E86752

Lighter +10%#E24025

Darker −10%#8E2413

Darker −20%#61190D

Darker −30%#340D07

Darker −40%#070201

More saturated +25%#D41E00

Less saturated −25%#A14334

Channel breakdown

R187

G48

B25

Red187 (73.3%)

Green48 (18.8%)

Blue25 (9.8%)

Hue8.52°

Saturation (HSL)76.42%

Lightness41.57%

Dominant channelRed

Hex per channelR BB · G 30 · B 19

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Harmonies

Lighter and darker

Similar named colours

Also reads as

BB3019 (chemical formula)

Formula
32,646.2 g/mol
3020 atoms

BB3019 has a molar mass of 32,646.2 g/mol, made up of 3020 atoms across 1 element: 3020 × B.

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Molar mass

Molar mass32,646.2 g/mol

Total atoms per molecule3020

Distinct elements1

Mass of one molecule5.421029 × 10^-20 g

Molecules per gram1.8446682 × 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 × 3020)32,646.2 g/mol, 100%

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Elements in this formula

Boron

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