Recognised as Colour

#BB4700

#BB4700
Orange
Dark
Nearest: Chocolate

#BB4700 is a orange with RGB values 187, 71, 0 and HSL 23°, 100%, 37%. It is a dark colour, so white text on it reaches 5.2:1 contrast (AA for normal text). The nearest named colour is Chocolate.

Colour values

#BB4700#BB4700

HEX#BB4700

RGBrgb(187, 71, 0)

RGB (0–1)0.7333, 0.2784, 0

RGB percentages73.3%, 27.8%, 0%

HSLhsl(22.8, 100%, 36.7%)

HSV / HSBhsv(22.8, 100%, 73.3%)

CMYK0%, 62%, 100%, 26.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer12,273,408

CSS custom property--colour: #BB4700;

Brightness & contrast

Relative luminance0.15071WCAG 2.x, 0 is black and 1 is white

Perceived brightness115.8 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.23:1

Contrast with white5.23:1WCAG normal text: AA

Contrast with black4.01:1WCAG normal text: Fail

Greyscale equivalent#5B5B5B

Inverted#44B8FF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#695C00no red cones; affects about 1% of men; ΔE 49.6 from the original

Deuteranopia#867600no green cones; the most common form, about 1% of men; ΔE 49.1 from the original

Tritanopia#CE263Cno blue cones; rare, and affects men and women equally; ΔE 32 from the original

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

Contrast with white, large text5.23:1WCAG large text: AAA

Contrast with black, large text4.01:1WCAG large text: AA

Named colours

Chocolate · ΔE 12.6 Firebrick · ΔE 23 Coral · ΔE 23.3 Tomato · ΔE 23.5 Dark red · ΔE 24.1 Saddle brown · ΔE 25

Nearest named CSS colourChocolate (#D2691E)ΔE 12.58, a distinctly different colour

Hue familyorange

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#0074BB

Analogous#BB0017, #BBA400

Triadic#00BB47, #4700BB

Split complementary#00BBA4, #0017BB

Tetradic#17BB00, #0074BB, #A400BB

Tints, shades & saturation

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

Lighter +40%#FFB588

Lighter +30%#FF9655

Lighter +20%#FF7622

Lighter +10%#EE5A00

Darker −10%#883400

Darker −20%#552000

Darker −30%#220D00

Darker −40%#000000

More saturated +25%#BB4700

Less saturated −25%#A44D17

Channel breakdown

R187

G71

Red187 (73.3%)

Green71 (27.8%)

Blue0 (0%)

Hue22.78°

Saturation (HSL)100%

Lightness36.67%

Dominant channelRed

Hex per channelR BB · G 47 · B 00

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Harmonies

Lighter and darker

Similar named colours

Also reads as

BB4700 (chemical formula)

Formula
50,817.81 g/mol
4701 atoms

BB4700 has a molar mass of 50,817.81 g/mol, made up of 4701 atoms across 1 element: 4701 × B.

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Molar mass

Molar mass50,817.81 g/mol

Total atoms per molecule4701

Distinct elements1

Mass of one molecule8.4384959 × 10^-20 g

Molecules per gram1.1850453 × 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 × 4701)50,817.81 g/mol, 100%

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Elements in this formula

Boron

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