Recognised as Colour

#FF3330

#FF3330
Red
Dark
Nearest: Red

#FF3330 is a red with RGB values 255, 51, 48 and HSL 1°, 100%, 59%. It is a dark colour, so black text on it reaches 5.8:1 contrast (AA for normal text). The nearest named colour is Red.

Colour values

#FF3330#FF3330

HEX#FF3330

RGBrgb(255, 51, 48)

RGB (0–1)1, 0.2, 0.1882

RGB percentages100%, 20%, 18.8%

HSLhsl(0.9, 100%, 59.4%)

HSV / HSBhsv(0.9, 81.2%, 100%)

CMYK0%, 80%, 81.2%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,724,784

CSS custom property--colour: #FF3330;

Brightness & contrast

Relative luminance0.23841WCAG 2.x, 0 is black and 1 is white

Perceived brightness145.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.77:1

Contrast with white3.64:1WCAG normal text: Fail

Contrast with black5.77:1WCAG normal text: AA

Greyscale equivalent#5E5E5E

Inverted#00CCCF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#766A2Cno red cones; affects about 1% of men; ΔE 79.7 from the original

Deuteranopia#A89625no green cones; the most common form, about 1% of men; ΔE 79.6 from the original

Tritanopia#FF0036no blue cones; rare, and affects men and women equally; ΔE 9.4 from the original

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

Contrast with white, large text3.64:1WCAG large text: AA

Contrast with black, large text5.77:1WCAG large text: AAA

Named colours

Red · ΔE 16.9 Tomato · ΔE 17.8 Orange red · ΔE 18.2 Crimson · ΔE 20.4 Firebrick · ΔE 28.2 Coral · ΔE 30.8

Nearest named CSS colourRed (#FF0000)ΔE 16.95, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#30FCFF

Analogous#FF3094, #FF9B30

Triadic#30FF33, #3330FF

Split complementary#30FF9B, #3095FF

Tetradic#94FF30, #30FCFF, #9A30FF

Tints, shades & saturation

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

Lighter +40%#FFFCFC

Lighter +30%#FFCAC9

Lighter +20%#FF9896

Lighter +10%#FF6563

Darker −10%#FC0400

Darker −20%#C90300

Darker −30%#960200

Darker −40%#630100

More saturated +25%#FF3330

Less saturated −25%#E54C4A

Channel breakdown

R255

G51

B48

Red255 (100%)

Green51 (20%)

Blue48 (18.8%)

Hue0.87°

Saturation (HSL)100%

Lightness59.41%

Dominant channelRed

Hex per channelR FF · G 33 · B 30

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FF3330 (chemical formula)

Formula
63,282.338 g/mol
3331 atoms

FF3330 has a molar mass of 63,282.338 g/mol, made up of 3331 atoms across 1 element: 3331 × F.

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Molar mass

Molar mass63,282.338 g/mol

Total atoms per molecule3331

Distinct elements1

Mass of one molecule1.0508279 × 10^-19 g

Molecules per gram9.5163057 × 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 × 3331)63,282.338 g/mol, 100%

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Elements in this formula

Fluorine

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