Recognised as Colour

#F80503

#F80503
Red
Dark
Nearest: Red

#F80503 is a red with RGB values 248, 5, 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

#F80503#F80503

HEX#F80503

RGBrgb(248, 5, 3)

RGB (0–1)0.9725, 0.0196, 0.0118

RGB percentages97.3%, 2%, 1.2%

HSLhsl(0.5, 97.6%, 49.2%)

HSV / HSBhsv(0.5, 98.8%, 97.3%)

CMYK0%, 98%, 98.8%, 2.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,254,211

CSS custom property--colour: #F80503;

Brightness & contrast

Relative luminance0.20072WCAG 2.x, 0 is black and 1 is white

Perceived brightness135.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.01:1

Contrast with white4.19:1WCAG normal text: Fail

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

Greyscale equivalent#393939

Inverted#07FAFC

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6A5D00no red cones; affects about 1% of men; ΔE 84.9 from the original

Deuteranopia#9F8C00no green cones; the most common form, about 1% of men; ΔE 83.4 from the original

Tritanopia#FF0011no blue cones; rare, and affects men and women equally; ΔE 3.3 from the original

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

Contrast with white, large text4.19:1WCAG large text: AA

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

Named colours

Red · ΔE 3.2 Orange red · ΔE 12.4 Tomato · ΔE 29.4 Crimson · ΔE 32.6 Firebrick · ΔE 37.5 Coral · ΔE 40.2

Nearest named CSS colourRed (#FF0000)ΔE 3.22, a close match

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#03F6F8

Analogous#F8037B, #F87F03

Triadic#03F805, #0503F8

Split complementary#03F880, #037BF8

Tetradic#7BF803, #03F6F8, #8003F8

Tints, shades & saturation

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

Lighter +40%#FEC9C9

Lighter +30%#FE9796

Lighter +20%#FD6564

Lighter +10%#FD3331

Darker −10%#C60402

Darker −20%#930302

Darker −30%#610201

Darker −40%#2E0101

More saturated +25%#FB0200

Less saturated −25%#D92422

Channel breakdown

R248

Red248 (97.3%)

Green5 (2%)

Blue3 (1.2%)

Hue0.49°

Saturation (HSL)97.61%

Lightness49.22%

Dominant channelRed

Hex per channelR F8 · G 05 · B 03

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Harmonies

Lighter and darker

Similar named colours

Also reads as

F80503 (chemical formula)

Formula
1,529,395.994 g/mol
80503 atoms

F80503 has a molar mass of 1,529,395.994 g/mol, made up of 80503 atoms across 1 element: 80503 × F.

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Molar mass

Molar mass1,529,395.994 g/mol

Total atoms per molecule80503

Distinct elements1

Mass of one molecule2.5396218 × 10^-18 g

Molecules per gram3.9375942 × 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 × 80503)1,529,395.994 g/mol, 100%

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Elements in this formula

Fluorine

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