Recognised as Colour

#F56131

#F56131
Red
Dark
Nearest: Tomato

#F56131 is a red with RGB values 245, 97, 49 and HSL 15°, 91%, 58%. It is a dark colour, so black text on it reaches 6.6:1 contrast (AA for normal text). The nearest named colour is Tomato.

Colour values

#F56131#F56131

HEX#F56131

RGBrgb(245, 97, 49)

RGB (0–1)0.9608, 0.3804, 0.1922

RGB percentages96.1%, 38%, 19.2%

HSLhsl(14.7, 90.7%, 57.6%)

HSV / HSBhsv(14.7, 80%, 96.1%)

CMYK0%, 60.4%, 80%, 3.9%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,081,201

CSS custom property--colour: #F56131;

Brightness & contrast

Relative luminance0.28184WCAG 2.x, 0 is black and 1 is white

Perceived brightness154.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 6.64:1

Contrast with white3.16:1WCAG normal text: Fail

Contrast with black6.64:1WCAG normal text: AA

Greyscale equivalent#7D7D7D

Inverted#0A9ECE

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#8B7C2Ano red cones; affects about 1% of men; ΔE 60 from the original

Deuteranopia#AF9D2Bno green cones; the most common form, about 1% of men; ΔE 60.6 from the original

Tritanopia#FF3B57no blue cones; rare, and affects men and women equally; ΔE 29.7 from the original

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

Contrast with white, large text3.16:1WCAG large text: AA

Contrast with black, large text6.64:1WCAG large text: AAA

Named colours

Tomato · ΔE 9.1 Coral · ΔE 13.6 Chocolate · ΔE 18 Orange red · ΔE 19.8 Firebrick · ΔE 27 Salmon · ΔE 28

Nearest named CSS colourTomato (#FF6347)ΔE 9.08, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#31C5F5

Analogous#F53163, #F5C331

Triadic#31F561, #6131F5

Split complementary#31F5C3, #3163F5

Tetradic#63F531, #31C5F5, #C331F5

Tints, shades & saturation

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

Lighter +40%#FEF6F4

Lighter +30%#FCD1C3

Lighter +20%#FAAC92

Lighter +10%#F78662

Darker −10%#E8410B

Darker −20%#B73409

Darker −30%#862607

Darker −40%#561804

More saturated +25%#FF5C27

Less saturated −25%#DA6F4C

Channel breakdown

R245

G97

B49

Red245 (96.1%)

Green97 (38%)

Blue49 (19.2%)

Hue14.69°

Saturation (HSL)90.74%

Lightness57.65%

Dominant channelRed

Hex per channelR F5 · G 61 · B 31

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Harmonies

Lighter and darker

Similar named colours

Also reads as

F56131 (chemical formula)

Formula
1,066,376.738 g/mol
56131 atoms

F56131 has a molar mass of 1,066,376.738 g/mol, made up of 56131 atoms across 1 element: 56131 × F.

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Molar mass

Molar mass1,066,376.738 g/mol

Total atoms per molecule56131

Distinct elements1

Mass of one molecule1.7707602 × 10^-18 g

Molecules per gram5.6472919 × 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

F100%

Fluorine (F × 56131)1,066,376.738 g/mol, 100%

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Elements in this formula

Fluorine

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