Recognised as Colour

#B75555

#B75555
Red
Dark
Nearest: Indian red

#B75555 is a red with RGB values 183, 85, 85 and HSL 0°, 40%, 53%. It is a dark colour, so white text on it reaches 4.7:1 contrast (AA for normal text). The nearest named colour is Indian red.

Colour values

#B75555#B75555

HEX#B75555

RGBrgb(183, 85, 85)

RGB (0–1)0.7176, 0.3333, 0.3333

RGB percentages71.8%, 33.3%, 33.3%

HSLhsl(0, 40.5%, 52.5%)

HSV / HSBhsv(0, 53.6%, 71.8%)

CMYK0%, 53.6%, 53.6%, 28.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer12,014,933

CSS custom property--colour: #B75555;

Brightness & contrast

Relative luminance0.1722WCAG 2.x, 0 is black and 1 is white

Perceived brightness122.8 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 4.73:1

Contrast with white4.73:1WCAG normal text: AA

Contrast with black4.44:1WCAG normal text: Fail

Greyscale equivalent#6A6A6A

Inverted#48AAAA

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6C6754no red cones; affects about 1% of men; ΔE 42.2 from the original

Deuteranopia#847B53no green cones; the most common form, about 1% of men; ΔE 42.9 from the original

Tritanopia#C74656no blue cones; rare, and affects men and women equally; ΔE 12.7 from the original

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

Contrast with white, large text4.73:1WCAG large text: AAA

Contrast with black, large text4.44:1WCAG large text: AA

Named colours

Indian red · ΔE 7.7 Light coral · ΔE 17.9 Brown · ΔE 18.7 Sienna · ΔE 20 Salmon · ΔE 21.9 Pale violetred · ΔE 23.1

Nearest named CSS colourIndian red (#CD5C5C)ΔE 7.67, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#55B7B7

Analogous#B75586, #B78655

Triadic#55B755, #5555B7

Split complementary#55B786, #5586B7

Tetradic#86B755, #55B7B7, #8655B7

Tints, shades & saturation

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

Lighter +40%#F4E4E4

Lighter +30%#E5C0C0

Lighter +20%#D59D9D

Lighter +10%#C67979

Darker −10%#984141

Darker −20%#753131

Darker −30%#512222

Darker −40%#2D1313

More saturated +25%#D53737

Less saturated −25%#997373

Channel breakdown

R183

G85

B85

Red183 (71.8%)

Green85 (33.3%)

Blue85 (33.3%)

Hue0°

Saturation (HSL)40.5%

Lightness52.55%

Dominant channelRed

Hex per channelR B7 · G 55 · B 55

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Harmonies

Lighter and darker

Similar named colours

Also reads as

B75555 (chemical formula)

Formula
816,749.55 g/mol
75555 atoms

B75555 has a molar mass of 816,749.55 g/mol, made up of 75555 atoms across 1 element: 75555 × B.

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Molar mass

Molar mass816,749.55 g/mol

Total atoms per molecule75555

Distinct elements1

Mass of one molecule1.3562445 × 10^-18 g

Molecules per gram7.3733016 × 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 × 75555)816,749.55 g/mol, 100%

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Elements in this formula

Boron

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