Recognised as Colour

#CF3500

#CF3500
Orange
Dark
Nearest: Orange red

#CF3500 is a orange with RGB values 207, 53, 0 and HSL 15°, 100%, 41%. It is a dark colour, so white text on it reaches 5:1 contrast (AA for normal text). The nearest named colour is Orange red.

Colour values

#CF3500#CF3500

HEX#CF3500

RGBrgb(207, 53, 0)

RGB (0–1)0.8118, 0.2078, 0

RGB percentages81.2%, 20.8%, 0%

HSLhsl(15.4, 100%, 40.6%)

HSV / HSBhsv(15.4, 100%, 81.2%)

CMYK0%, 74.4%, 100%, 18.8%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer13,579,520

CSS custom property--colour: #CF3500;

Brightness & contrast

Relative luminance0.15812WCAG 2.x, 0 is black and 1 is white

Perceived brightness120.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.05:1

Contrast with white5.05:1WCAG normal text: AA

Contrast with black4.16:1WCAG normal text: Fail

Greyscale equivalent#525252

Inverted#30CAFF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#665900no red cones; affects about 1% of men; ΔE 63.9 from the original

Deuteranopia#8B7B00no green cones; the most common form, about 1% of men; ΔE 63.5 from the original

Tritanopia#E5002Eno blue cones; rare, and affects men and women equally; ΔE 22.4 from the original

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

Contrast with white, large text5.05:1WCAG large text: AAA

Contrast with black, large text4.16:1WCAG large text: AA

Named colours

Orange red · ΔE 17.6 Tomato · ΔE 19.9 Firebrick · ΔE 22.7 Chocolate · ΔE 23.3 Red · ΔE 24.2 Dark red · ΔE 26.6

Nearest named CSS colourOrange red (#FF4500)ΔE 17.58, a distinctly different colour

Hue familyorange

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#009ACF

Analogous#CF0033, #CF9C00

Triadic#00CF35, #3500CF

Split complementary#00CF9D, #0032CF

Tetradic#32CF00, #009ACF, #9D00CF

Tints, shades & saturation

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

Lighter +40%#FFB59C

Lighter +30%#FF8F69

Lighter +20%#FF6936

Lighter +10%#FF4403

Darker −10%#9C2800

Darker −20%#691B00

Darker −30%#360E00

Darker −40%#030100

More saturated +25%#CF3500

Less saturated −25%#B5421A

Channel breakdown

R207

G53

Red207 (81.2%)

Green53 (20.8%)

Blue0 (0%)

Hue15.36°

Saturation (HSL)100%

Lightness40.59%

Dominant channelRed

Hex per channelR CF · G 35 · B 00

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Harmonies

Lighter and darker

Similar named colours

Also reads as

CF3500 (chemical formula)

Formula
66,505.011 g/mol
3501 atoms

CF3500 has a molar mass of 66,505.011 g/mol, made up of 3501 atoms across 2 elements: 1 × C, 3500 × F.

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Molar mass

Molar mass66,505.011 g/mol

Total atoms per molecule3501

Distinct elements2

Mass of one molecule1.1043417 × 10^-19 g

Molecules per gram9.0551684 × 10^18

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, 0.018%

Fluorine (F × 3500)66,493 g/mol, 99.982%

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Elements in this formula

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