Recognised as Colour

#F80303

#F80303
Red
Dark
Nearest: Red

#F80303 is a red with RGB values 248, 3, 3 and HSL 0°, 98%, 49%. It is a dark colour, so black text on it reaches 5:1 contrast (AA for normal text). The nearest named colour is Red.

Colour values

#F80303#F80303

HEX#F80303

RGBrgb(248, 3, 3)

RGB (0–1)0.9725, 0.0118, 0.0118

RGB percentages97.3%, 1.2%, 1.2%

HSLhsl(0, 97.6%, 49.2%)

HSV / HSBhsv(0, 98.8%, 97.3%)

CMYK0%, 98.8%, 98.8%, 2.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,253,699

CSS custom property--colour: #F80303;

Brightness & contrast

Relative luminance0.20028WCAG 2.x, 0 is black and 1 is white

Perceived brightness135.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.01:1

Contrast with white4.2:1WCAG normal text: Fail

Contrast with black5.01:1WCAG normal text: AA

Greyscale equivalent#373737

Inverted#07FCFC

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6A5D00no red cones; affects about 1% of men; ΔE 85 from the original

Deuteranopia#9F8C00no green cones; the most common form, about 1% of men; ΔE 83.5 from the original

Tritanopia#FF0010no blue cones; rare, and affects men and women equally; ΔE 3.1 from the original

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

Contrast with white, large text4.2:1WCAG large text: AA

Contrast with black, large text5.01:1WCAG large text: AAA

Named colours

Red · ΔE 3.2 Orange red · ΔE 12.5 Tomato · ΔE 29.5 Crimson · ΔE 32.6 Firebrick · ΔE 37.6 Coral · ΔE 40.3

Nearest named CSS colourRed (#FF0000)ΔE 3.16, a close match

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#03F8F8

Analogous#F8037E, #F87E03

Triadic#03F803, #0303F8

Split complementary#03F87E, #037EF8

Tetradic#7EF803, #03F8F8, #7E03F8

Tints, shades & saturation

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

Lighter +40%#FEC9C9

Lighter +30%#FE9696

Lighter +20%#FD6464

Lighter +10%#FD3131

Darker −10%#C60202

Darker −20%#930202

Darker −30%#610101

Darker −40%#2E0101

More saturated +25%#FB0000

Less saturated −25%#D92222

Channel breakdown

R248

Red248 (97.3%)

Green3 (1.2%)

Blue3 (1.2%)

Hue0°

Saturation (HSL)97.61%

Lightness49.22%

Dominant channelRed

Hex per channelR F8 · G 03 · B 03

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Harmonies

Lighter and darker

Similar named colours

Also reads as

F80303 (chemical formula)

Formula
1,525,596.394 g/mol
80303 atoms

F80303 has a molar mass of 1,525,596.394 g/mol, made up of 80303 atoms across 1 element: 80303 × F.

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Molar mass

Molar mass1,525,596.394 g/mol

Total atoms per molecule80303

Distinct elements1

Mass of one molecule2.5333124 × 10^-18 g

Molecules per gram3.947401 × 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 × 80303)1,525,596.394 g/mol, 100%

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Elements in this formula

Fluorine

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