Recognised as Colour

#FF4812

#FF4812
Red
Dark
Nearest: Orange red

#FF4812 is a red with RGB values 255, 72, 18 and HSL 14°, 100%, 54%. It is a dark colour, so black text on it reaches 6.2:1 contrast (AA for normal text). The nearest named colour is Orange red.

Colour values

#FF4812#FF4812

HEX#FF4812

RGBrgb(255, 72, 18)

RGB (0–1)1, 0.2824, 0.0706

RGB percentages100%, 28.2%, 7.1%

HSLhsl(13.7, 100%, 53.5%)

HSV / HSBhsv(13.7, 92.9%, 100%)

CMYK0%, 71.8%, 92.9%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,730,130

CSS custom property--colour: #FF4812;

Brightness & contrast

Relative luminance0.25938WCAG 2.x, 0 is black and 1 is white

Perceived brightness150.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 6.19:1

Contrast with white3.39:1WCAG normal text: Fail

Contrast with black6.19:1WCAG normal text: AA

Greyscale equivalent#6B6B6B

Inverted#00B7ED

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#817100no red cones; affects about 1% of men; ΔE 72.8 from the original

Deuteranopia#AE9A00no green cones; the most common form, about 1% of men; ΔE 72.9 from the original

Tritanopia#FF0040no blue cones; rare, and affects men and women equally; ΔE 28.8 from the original

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

Contrast with white, large text3.39:1WCAG large text: AA

Contrast with black, large text6.19:1WCAG large text: AAA

Named colours

Orange red · ΔE 3.8 Red · ΔE 14.1 Tomato · ΔE 21.4 Coral · ΔE 29.5 Chocolate · ΔE 31.1 Dark orange · ΔE 33.8

Nearest named CSS colourOrange red (#FF4500)ΔE 3.75, a close match

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#12C9FF

Analogous#FF1252, #FFBF12

Triadic#12FF48, #4812FF

Split complementary#12FFBF, #1252FF

Tetradic#52FF12, #12C9FF, #BE12FF

Tints, shades & saturation

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

Lighter +40%#FFE6DE

Lighter +30%#FFBEAB

Lighter +20%#FF9778

Lighter +10%#FF6F45

Darker −10%#DE3300

Darker −20%#AB2700

Darker −30%#781B00

Darker −40%#451000

More saturated +25%#FF4812

Less saturated −25%#E15830

Channel breakdown

R255

G72

B18

Red255 (100%)

Green72 (28.2%)

Blue18 (7.1%)

Hue13.67°

Saturation (HSL)100%

Lightness53.53%

Dominant channelRed

Hex per channelR FF · G 48 · B 12

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FF4812 (chemical formula)

Formula
91,437.374 g/mol
4813 atoms

FF4812 has a molar mass of 91,437.374 g/mol, made up of 4813 atoms across 1 element: 4813 × F.

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Molar mass

Molar mass91,437.374 g/mol

Total atoms per molecule4813

Distinct elements1

Mass of one molecule1.5183533 × 10^-19 g

Molecules per gram6.5860824 × 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 × 4813)91,437.374 g/mol, 100%

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Elements in this formula

Fluorine

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