Recognised as Colour

#CF161F

#CF161F
Red
Dark
Nearest: Crimson

#CF161F is a red with RGB values 207, 22, 31 and HSL 357°, 81%, 45%. It is a dark colour, so white text on it reaches 5.5:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#CF161F#CF161F

HEX#CF161F

RGBrgb(207, 22, 31)

RGB (0–1)0.8118, 0.0863, 0.1216

RGB percentages81.2%, 8.6%, 12.2%

HSLhsl(357.1, 80.8%, 44.9%)

HSV / HSBhsv(357.1, 89.4%, 81.2%)

CMYK0%, 89.4%, 85%, 18.8%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer13,571,615

CSS custom property--colour: #CF161F;

Brightness & contrast

Relative luminance0.13938WCAG 2.x, 0 is black and 1 is white

Perceived brightness114.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.54:1

Contrast with white5.54:1WCAG normal text: AA

Contrast with black3.79:1WCAG normal text: Fail

Greyscale equivalent#3E3E3E

Inverted#30E9E0

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#594F1Cno red cones; affects about 1% of men; ΔE 71.7 from the original

Deuteranopia#857612no green cones; the most common form, about 1% of men; ΔE 71.5 from the original

Tritanopia#E5001Eno blue cones; rare, and affects men and women equally; ΔE 10.2 from the original

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

Contrast with white, large text5.54:1WCAG large text: AAA

Contrast with black, large text3.79:1WCAG large text: AA

Named colours

Crimson · ΔE 13.6 Firebrick · ΔE 14.4 Tomato · ΔE 20 Dark red · ΔE 22.8 Brown · ΔE 23.8 Orange red · ΔE 26.6

Nearest named CSS colourCrimson (#DC143C)ΔE 13.58, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#16CFC6

Analogous#CF167C, #CF6A16

Triadic#1FCF16, #161FCF

Split complementary#16CF6A, #167CCF

Tetradic#7BCF16, #16CFC6, #6916CF

Tints, shades & saturation

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

Lighter +40%#F8B9BC

Lighter +30%#F38B90

Lighter +20%#EE5D64

Lighter +10%#E92F38

Darker −10%#A11118

Darker −20%#730C11

Darker −30%#45070A

Darker −40%#170203

More saturated +25%#E5000B

Less saturated −25%#B23339

Channel breakdown

R207

G22

B31

Red207 (81.2%)

Green22 (8.6%)

Blue31 (12.2%)

Hue357.08°

Saturation (HSL)80.79%

Lightness44.9%

Dominant channelRed

Hex per channelR CF · G 16 · B 1F

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Harmonies

Lighter and darker

Similar named colours

Also reads as

CF161F (chemical formula)

Formula
3,089.687 g/mol
163 atoms

CF161F has a molar mass of 3,089.687 g/mol, made up of 163 atoms across 2 elements: 1 × C, 162 × F.

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Molar mass

Molar mass3,089.687 g/mol

Total atoms per molecule163

Distinct elements2

Mass of one molecule5.130546 × 10^-21 g

Molecules per gram1.9491103 × 10^20

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

C0.4%

F99.6%

Carbon (C)12.011 g/mol, 0.389%

Fluorine (F × 162)3,077.676 g/mol, 99.611%

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