Recognised as Colour

#FF422C

#FF422C
Red
Dark
Nearest: Orange red

#FF422C is a red with RGB values 255, 66, 44 and HSL 6°, 100%, 59%. It is a dark colour, so black text on it reaches 6.1:1 contrast (AA for normal text). The nearest named colour is Orange red.

Colour values

#FF422C#FF422C

HEX#FF422C

RGBrgb(255, 66, 44)

RGB (0–1)1, 0.2588, 0.1725

RGB percentages100%, 25.9%, 17.3%

HSLhsl(6.3, 100%, 58.6%)

HSV / HSBhsv(6.3, 82.7%, 100%)

CMYK0%, 74.1%, 82.7%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,728,620

CSS custom property--colour: #FF422C;

Brightness & contrast

Relative luminance0.25338WCAG 2.x, 0 is black and 1 is white

Perceived brightness149.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 6.07:1

Contrast with white3.46:1WCAG normal text: Fail

Contrast with black6.07:1WCAG normal text: AA

Greyscale equivalent#696969

Inverted#00BDD3

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#7D6F27no red cones; affects about 1% of men; ΔE 75 from the original

Deuteranopia#AB9921no green cones; the most common form, about 1% of men; ΔE 75.6 from the original

Tritanopia#FF003Fno blue cones; rare, and affects men and women equally; ΔE 18.6 from the original

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

Contrast with white, large text3.46:1WCAG large text: AA

Contrast with black, large text6.07:1WCAG large text: AAA

Named colours

Orange red · ΔE 14 Tomato · ΔE 15.2 Red · ΔE 16.7 Crimson · ΔE 23.9 Coral · ΔE 27 Firebrick · ΔE 28.6

Nearest named CSS colourOrange red (#FF4500)ΔE 13.98, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#2CE9FF

Analogous#FF2C7F, #FFAC2C

Triadic#2CFF42, #422CFF

Split complementary#2CFFAC, #2C7FFF

Tetradic#7FFF2C, #2CE9FF, #AC2CFF

Tints, shades & saturation

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

Lighter +40%#FFF9F8

Lighter +30%#FFCBC5

Lighter +20%#FF9D92

Lighter +10%#FF705F

Darker −10%#F81A00

Darker −20%#C51500

Darker −30%#920F00

Darker −40%#5F0A00

More saturated +25%#FF422C

Less saturated −25%#E55746

Channel breakdown

R255

G66

B44

Red255 (100%)

Green66 (25.9%)

Blue44 (17.3%)

Hue6.26°

Saturation (HSL)100%

Lightness58.63%

Dominant channelRed

Hex per channelR FF · G 42 · B 2C

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FF422C (chemical formula)

Formula
8,048.165 g/mol
424 atoms

FF422C has a molar mass of 8,048.165 g/mol, made up of 424 atoms across 2 elements: 423 × F, 1 × C.

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Molar mass

Molar mass8,048.165 g/mol

Total atoms per molecule424

Distinct elements2

Mass of one molecule1.3364292 × 10^-20 g

Molecules per gram7.4826259 × 10^19

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

F99.9%

C0.1%

Fluorine (F × 423)8,036.154 g/mol, 99.851%

Carbon (C)12.011 g/mol, 0.149%

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