Recognised as Colour

#B53F45

#B53F45
Red
Dark
Nearest: Indian red

#B53F45 is a red with RGB values 181, 63, 69 and HSL 357°, 48%, 48%. It is a dark colour, so white text on it reaches 5.6:1 contrast (AA for normal text). The nearest named colour is Indian red.

Colour values

#B53F45#B53F45

HEX#B53F45

RGBrgb(181, 63, 69)

RGB (0–1)0.7098, 0.2471, 0.2706

RGB percentages71%, 24.7%, 27.1%

HSLhsl(356.9, 48.4%, 47.8%)

HSV / HSBhsv(356.9, 65.2%, 71%)

CMYK0%, 65.2%, 61.9%, 29%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,878,213

CSS custom property--colour: #B53F45;

Brightness & contrast

Relative luminance0.13808WCAG 2.x, 0 is black and 1 is white

Perceived brightness112.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.58:1

Contrast with white5.58:1WCAG normal text: AA

Contrast with black3.76:1WCAG normal text: Fail

Greyscale equivalent#595959

Inverted#4AC0BA

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#5D5844no red cones; affects about 1% of men; ΔE 51.2 from the original

Deuteranopia#7B7142no green cones; the most common form, about 1% of men; ΔE 51.7 from the original

Tritanopia#C62542no blue cones; rare, and affects men and women equally; ΔE 14.2 from the original

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

Contrast with white, large text5.58:1WCAG large text: AAA

Contrast with black, large text3.76:1WCAG large text: AA

Named colours

Indian red · ΔE 10 Brown · ΔE 10.2 Firebrick · ΔE 17.5 Sienna · ΔE 22.8 Light coral · ΔE 23 Maroon · ΔE 24

Nearest named CSS colourIndian red (#CD5C5C)ΔE 10.01, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#3FB5AF

Analogous#B53F80, #B5743F

Triadic#45B53F, #3F45B5

Split complementary#3FB574, #3F80B5

Tetradic#80B53F, #3FB5AF, #743FB5

Tints, shades & saturation

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

Lighter +40%#EFD1D3

Lighter +30%#E2ABAE

Lighter +20%#D58589

Lighter +10%#C76065

Darker −10%#8F3237

Darker −20%#692528

Darker −30%#44171A

Darker −40%#1E0A0B

More saturated +25%#D4212A

Less saturated −25%#975E60

Channel breakdown

R181

G63

B69

Red181 (71%)

Green63 (24.7%)

Blue69 (27.1%)

Hue356.95°

Saturation (HSL)48.36%

Lightness47.84%

Dominant channelRed

Hex per channelR B5 · G 3F · B 45

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Harmonies

Lighter and darker

Similar named colours

Also reads as

B53F45 (chemical formula)

Formula
1,427.84 g/mol
98 atoms

B53F45 has a molar mass of 1,427.84 g/mol, made up of 98 atoms across 2 elements: 53 × B, 45 × F.

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Molar mass

Molar mass1,427.84 g/mol

Total atoms per molecule98

Distinct elements2

Mass of one molecule2.3709841 × 10^-21 g

Molecules per gram4.217658 × 10^20

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

B40.1%

F59.9%

Boron (B × 53)572.93 g/mol, 40.126%

Fluorine (F × 45)854.91 g/mol, 59.874%

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Elements in this formula

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