Recognised as Colour

#FF1658

#FF1658
Red
Dark
Nearest: Crimson

#FF1658 is a red with RGB values 255, 22, 88 and HSL 343°, 100%, 54%. It is a dark colour, so black text on it reaches 5.5:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#FF1658#FF1658

HEX#FF1658

RGBrgb(255, 22, 88)

RGB (0–1)1, 0.0863, 0.3451

RGB percentages100%, 8.6%, 34.5%

HSLhsl(343, 100%, 54.3%)

HSV / HSBhsv(343, 91.4%, 100%)

CMYK0%, 91.4%, 65.5%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,717,400

CSS custom property--colour: #FF1658;

Brightness & contrast

Relative luminance0.22538WCAG 2.x, 0 is black and 1 is white

Perceived brightness143.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.51:1

Contrast with white3.81:1WCAG normal text: Fail

Contrast with black5.51:1WCAG normal text: AA

Greyscale equivalent#4C4C4C

Inverted#00E9A7

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#696558no red cones; affects about 1% of men; ΔE 84.5 from the original

Deuteranopia#A09351no green cones; the most common form, about 1% of men; ΔE 85.5 from the original

Tritanopia#FF0038no blue cones; rare, and affects men and women equally; ΔE 17.4 from the original

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

Contrast with white, large text3.81:1WCAG large text: AA

Contrast with black, large text5.51:1WCAG large text: AAA

Named colours

Crimson · ΔE 13.5 Tomato · ΔE 30.3 Firebrick · ΔE 30.6 Deep pink · ΔE 33.7 Brown · ΔE 35.2 Indian red · ΔE 36

Nearest named CSS colourCrimson (#DC143C)ΔE 13.47, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#16FFBD

Analogous#FF16CD, #FF4916

Triadic#58FF16, #1658FF

Split complementary#16FF49, #16CDFF

Tetradic#CCFF16, #16FFBD, #4816FF

Tints, shades & saturation

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

Lighter +40%#FFE2EA

Lighter +30%#FFAFC6

Lighter +20%#FF7CA1

Lighter +10%#FF497D

Darker −10%#E20040

Darker −20%#AF0032

Darker −30%#7C0023

Darker −40%#490015

More saturated +25%#FF1658

Less saturated −25%#E23365

Channel breakdown

R255

G22

B88

Red255 (100%)

Green22 (8.6%)

Blue88 (34.5%)

Hue343°

Saturation (HSL)100%

Lightness54.31%

Dominant channelRed

Hex per channelR FF · G 16 · B 58

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FF1658 (chemical formula)

Formula
31,517.682 g/mol
1659 atoms

FF1658 has a molar mass of 31,517.682 g/mol, made up of 1659 atoms across 1 element: 1659 × F.

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Molar mass

Molar mass31,517.682 g/mol

Total atoms per molecule1659

Distinct elements1

Mass of one molecule5.2336342 × 10^-20 g

Molecules per gram1.9107182 × 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

F100%

Fluorine (F × 1659)31,517.682 g/mol, 100%

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Elements in this formula

Fluorine

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