Recognised as Colour

#FF4F27

#FF4F27
Red
Dark
Nearest: Orange red

#FF4F27 is a red with RGB values 255, 79, 39 and HSL 11°, 100%, 58%. It is a dark colour, so black text on it reaches 6.4:1 contrast (AA for normal text). The nearest named colour is Orange red.

Colour values

#FF4F27#FF4F27

HEX#FF4F27

RGBrgb(255, 79, 39)

RGB (0–1)1, 0.3098, 0.1529

RGB percentages100%, 31%, 15.3%

HSLhsl(11.1, 100%, 57.6%)

HSV / HSBhsv(11.1, 84.7%, 100%)

CMYK0%, 69%, 84.7%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,731,943

CSS custom property--colour: #FF4F27;

Brightness & contrast

Relative luminance0.26998WCAG 2.x, 0 is black and 1 is white

Perceived brightness152.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 6.4:1

Contrast with white3.28:1WCAG normal text: Fail

Contrast with black6.4:1WCAG normal text: AA

Greyscale equivalent#727272

Inverted#00B0D8

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#84751Fno red cones; affects about 1% of men; ΔE 70.6 from the original

Deuteranopia#AF9C1Bno green cones; the most common form, about 1% of men; ΔE 71 from the original

Tritanopia#FF0048no blue cones; rare, and affects men and women equally; ΔE 28.5 from the original

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

Contrast with white, large text3.28:1WCAG large text: AA

Contrast with black, large text6.4:1WCAG large text: AAA

Named colours

Orange red · ΔE 10.8 Tomato · ΔE 14.4 Red · ΔE 18.4 Coral · ΔE 23.9 Chocolate · ΔE 28 Crimson · ΔE 28.4

Nearest named CSS colourOrange red (#FF4500)ΔE 10.82, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#27D7FF

Analogous#FF276B, #FFBB27

Triadic#27FF4F, #4F27FF

Split complementary#27FFBB, #276BFF

Tetradic#6BFF27, #27D7FF, #BB27FF

Tints, shades & saturation

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

Lighter +40%#FFF5F3

Lighter +30%#FFCCC0

Lighter +20%#FFA28D

Lighter +10%#FF795A

Darker −10%#F32D00

Darker −20%#C02400

Darker −30%#8D1A00

Darker −40%#5A1100

More saturated +25%#FF4F27

Less saturated −25%#E46042

Channel breakdown

R255

G79

B39

Red255 (100%)

Green79 (31%)

Blue39 (15.3%)

Hue11.11°

Saturation (HSL)100%

Lightness57.65%

Dominant channelRed

Hex per channelR FF · G 4F · B 27

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FF4F27 (chemical formula)

Formula
607.936 g/mol
32 atoms

FF4F27 has a molar mass of 607.936 g/mol, made up of 32 atoms across 1 element: 32 × F.

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Molar mass

Molar mass607.936 g/mol

Total atoms per molecule32

Distinct elements1

Mass of one molecule1.0095015 × 10^-21 g

Molecules per gram9.9058795 × 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

F100%

Fluorine (F × 32)607.936 g/mol, 100%

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Elements in this formula

Fluorine

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