Recognised as Colour

#F82337

#F82337
Red
Dark
Nearest: Crimson

#F82337 is a red with RGB values 248, 35, 55 and HSL 354°, 94%, 55%. It is a dark colour, so black text on it reaches 5.3:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#F82337#F82337

HEX#F82337

RGBrgb(248, 35, 55)

RGB (0–1)0.9725, 0.1373, 0.2157

RGB percentages97.3%, 13.7%, 21.6%

HSLhsl(354.4, 93.8%, 55.5%)

HSV / HSBhsv(354.4, 85.9%, 97.3%)

CMYK0%, 85.9%, 77.8%, 2.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,261,943

CSS custom property--colour: #F82337;

Brightness & contrast

Relative luminance0.21434WCAG 2.x, 0 is black and 1 is white

Perceived brightness139.5 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.29:1

Contrast with white3.97:1WCAG normal text: Fail

Contrast with black5.29:1WCAG normal text: AA

Greyscale equivalent#525252

Inverted#07DCC8

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6D6335no red cones; affects about 1% of men; ΔE 81.1 from the original

Deuteranopia#A08F2Dno green cones; the most common form, about 1% of men; ΔE 80.9 from the original

Tritanopia#FF002Eno blue cones; rare, and affects men and women equally; ΔE 7.5 from the original

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

Contrast with white, large text3.97:1WCAG large text: AA

Contrast with black, large text5.29:1WCAG large text: AAA

Named colours

Crimson · ΔE 13.9 Tomato · ΔE 19.7 Red · ΔE 22.6 Firebrick · ΔE 25.3 Orange red · ΔE 25.4 Coral · ΔE 33.2

Nearest named CSS colourCrimson (#DC143C)ΔE 13.94, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#23F8E4

Analogous#F823A1, #F87923

Triadic#37F823, #2337F8

Split complementary#23F879, #23A1F8

Tetradic#A2F823, #23F8E4, #7A23F8

Tints, shades & saturation

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

Lighter +40%#FEE9EB

Lighter +30%#FDB7BE

Lighter +20%#FB8691

Lighter +10%#FA5464

Darker −10%#E1071C

Darker −20%#AF0616

Darker −30%#7E040F

Darker −40%#4D0209

More saturated +25%#FF1C31

Less saturated −25%#DC3F4E

Channel breakdown

R248

G35

B55

Red248 (97.3%)

Green35 (13.7%)

Blue55 (21.6%)

Hue354.37°

Saturation (HSL)93.83%

Lightness55.49%

Dominant channelRed

Hex per channelR F8 · G 23 · B 37

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Harmonies

Lighter and darker

Similar named colours

Also reads as

F82337 (chemical formula)

Formula
1,564,238.326 g/mol
82337 atoms

F82337 has a molar mass of 1,564,238.326 g/mol, made up of 82337 atoms across 1 element: 82337 × F.

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Molar mass

Molar mass1,564,238.326 g/mol

Total atoms per molecule82337

Distinct elements1

Mass of one molecule2.5974789 × 10^-18 g

Molecules per gram3.849887 × 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 × 82337)1,564,238.326 g/mol, 100%

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Elements in this formula

Fluorine

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