Recognised as Colour

#F3817F

#F3817F
Red
Dark
Nearest: Light coral

#F3817F is a red with RGB values 243, 129, 127 and HSL 1°, 83%, 73%. It is a dark colour, so black text on it reaches 8.3:1 contrast (AAA for normal text). The nearest named colour is Light coral.

Colour values

#F3817F#F3817F

HEX#F3817F

RGBrgb(243, 129, 127)

RGB (0–1)0.9529, 0.5059, 0.498

RGB percentages95.3%, 50.6%, 49.8%

HSLhsl(1, 82.9%, 72.5%)

HSV / HSBhsv(1, 47.7%, 95.3%)

CMYK0%, 46.9%, 47.7%, 4.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer15,958,399

CSS custom property--colour: #F3817F;

Brightness & contrast

Relative luminance0.36288WCAG 2.x, 0 is black and 1 is white

Perceived brightness171.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 8.26:1

Contrast with white2.54:1WCAG normal text: Fail

Contrast with black8.26:1WCAG normal text: AAA

Greyscale equivalent#999999

Inverted#0C7E80

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#9A947Eno red cones; affects about 1% of men; ΔE 46.1 from the original

Deuteranopia#B6AB7Dno green cones; the most common form, about 1% of men; ΔE 46.8 from the original

Tritanopia#FF7181no blue cones; rare, and affects men and women equally; ΔE 12.4 from the original

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

Contrast with white, large text2.54:1WCAG large text: Fail

Contrast with black, large text8.26:1WCAG large text: AAA

Named colours

Light coral · ΔE 1.6 Salmon · ΔE 8.4 Indian red · ΔE 13.5 Dark salmon · ΔE 16.8 Light salmon · ΔE 19.7 Pale violetred · ΔE 21.6

Nearest named CSS colourLight coral (#F08080)ΔE 1.62, below the just-noticeable difference

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#7FF1F3

Analogous#F37FB7, #F3BB7F

Triadic#7FF381, #817FF3

Split complementary#7FF3BB, #7FB7F3

Tetradic#B7F37F, #7FF1F3, #BB7FF3

Tints, shades & saturation

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

Lighter +40%#FFFFFF

Lighter +30%#FFFFFF

Lighter +20%#FCDDDC

Lighter +10%#F7AFAE

Darker −10%#EF5350

Darker −20%#EA2522

Darker −30%#C61613

Darker −40%#98110E

More saturated +25%#FF7573

Less saturated −25%#E29291

Channel breakdown

R243

G129

B127

Red243 (95.3%)

Green129 (50.6%)

Blue127 (49.8%)

Hue1.03°

Saturation (HSL)82.86%

Lightness72.55%

Dominant channelRed

Hex per channelR F3 · G 81 · B 7F

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Harmonies

Lighter and darker

Similar named colours

Also reads as

F3817F (chemical formula)

Formula
72,534.364 g/mol
3818 atoms

F3817F has a molar mass of 72,534.364 g/mol, made up of 3818 atoms across 1 element: 3818 × F.

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Molar mass

Molar mass72,534.364 g/mol

Total atoms per molecule3818

Distinct elements1

Mass of one molecule1.2044615 × 10^-19 g

Molecules per gram8.3024658 × 10^18

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

F100%

Fluorine (F × 3818)72,534.364 g/mol, 100%

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Elements in this formula

Fluorine

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