Recognised as Colour

#CF1700

#CF1700
Red
Dark
Nearest: Orange red

#CF1700 is a red with RGB values 207, 23, 0 and HSL 7°, 100%, 41%. It is a dark colour, so white text on it reaches 5.6:1 contrast (AA for normal text). The nearest named colour is Orange red.

Colour values

#CF1700#CF1700

HEX#CF1700

RGBrgb(207, 23, 0)

RGB (0–1)0.8118, 0.0902, 0

RGB percentages81.2%, 9%, 0%

HSLhsl(6.7, 100%, 40.6%)

HSV / HSBhsv(6.7, 100%, 81.2%)

CMYK0%, 88.9%, 100%, 18.8%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer13,571,840

CSS custom property--colour: #CF1700;

Brightness & contrast

Relative luminance0.13878WCAG 2.x, 0 is black and 1 is white

Perceived brightness114.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.56:1

Contrast with white5.56:1WCAG normal text: AA

Contrast with black3.78:1WCAG normal text: Fail

Greyscale equivalent#3C3C3C

Inverted#30E8FF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#5B4F00no red cones; affects about 1% of men; ΔE 71.5 from the original

Deuteranopia#867600no green cones; the most common form, about 1% of men; ΔE 70.7 from the original

Tritanopia#E50018no blue cones; rare, and affects men and women equally; ΔE 9.7 from the original

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

Contrast with white, large text5.56:1WCAG large text: AAA

Contrast with black, large text3.78:1WCAG large text: AA

Named colours

Orange red · ΔE 17.7 Red · ΔE 19.4 Tomato · ΔE 22.8 Firebrick · ΔE 23 Crimson · ΔE 24.9 Dark red · ΔE 27.3

Nearest named CSS colourOrange red (#FF4500)ΔE 17.67, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#00B8CF

Analogous#CF0050, #CF7F00

Triadic#00CF17, #1700CF

Split complementary#00CF7E, #0051CF

Tetradic#50CF00, #00B8CF, #7F00CF

Tints, shades & saturation

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

Lighter +40%#FFA79C

Lighter +30%#FF7A69

Lighter +20%#FF4C36

Lighter +10%#FF1F03

Darker −10%#9C1100

Darker −20%#690C00

Darker −30%#360600

Darker −40%#030000

More saturated +25%#CF1700

Less saturated −25%#B52B1A

Channel breakdown

R207

G23

Red207 (81.2%)

Green23 (9%)

Blue0 (0%)

Hue6.67°

Saturation (HSL)100%

Lightness40.59%

Dominant channelRed

Hex per channelR CF · G 17 · B 00

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Harmonies

Lighter and darker

Similar named colours

Also reads as

CF1700 (chemical formula)

Formula
32,308.611 g/mol
1701 atoms

CF1700 has a molar mass of 32,308.611 g/mol, made up of 1701 atoms across 2 elements: 1 × C, 1700 × F.

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Molar mass

Molar mass32,308.611 g/mol

Total atoms per molecule1701

Distinct elements2

Mass of one molecule5.3649711 × 10^-20 g

Molecules per gram1.8639429 × 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

C0%

F100%

Carbon (C)12.011 g/mol, 0.037%

Fluorine (F × 1700)32,296.6 g/mol, 99.963%

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Elements in this formula

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