Recognised as Colour

#CF2545

#CF2545
Red
Dark
Nearest: Crimson

#CF2545 is a red with RGB values 207, 37, 69 and HSL 349°, 70%, 48%. It is a dark colour, so white text on it reaches 5.2:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#CF2545#CF2545

HEX#CF2545

RGBrgb(207, 37, 69)

RGB (0–1)0.8118, 0.1451, 0.2706

RGB percentages81.2%, 14.5%, 27.1%

HSLhsl(348.7, 69.7%, 47.8%)

HSV / HSBhsv(348.7, 82.1%, 81.2%)

CMYK0%, 82.1%, 66.7%, 18.8%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer13,575,493

CSS custom property--colour: #CF2545;

Brightness & contrast

Relative luminance0.15018WCAG 2.x, 0 is black and 1 is white

Perceived brightness119 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.25:1

Contrast with white5.25:1WCAG normal text: AA

Contrast with black4:1WCAG normal text: Fail

Greyscale equivalent#4B4B4B

Inverted#30DABA

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#5A5545no red cones; affects about 1% of men; ΔE 68.3 from the original

Deuteranopia#847940no green cones; the most common form, about 1% of men; ΔE 69.2 from the original

Tritanopia#E30034no blue cones; rare, and affects men and women equally; ΔE 16.7 from the original

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

Contrast with white, large text5.25:1WCAG large text: AAA

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

Named colours

Crimson · ΔE 10 Firebrick · ΔE 16.1 Brown · ΔE 17.8 Indian red · ΔE 21.7 Dark red · ΔE 27.1 Tomato · ΔE 27.3

Nearest named CSS colourCrimson (#DC143C)ΔE 9.95, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#25CFAF

Analogous#CF259A, #CF5A25

Triadic#45CF25, #2545CF

Split complementary#25CF5A, #259ACF

Tetradic#9ACF25, #25CFAF, #5A25CF

Tints, shades & saturation

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

Lighter +40%#F6CAD3

Lighter +30%#EE9FAE

Lighter +20%#E67489

Lighter +10%#DE4965

Darker −10%#A41D37

Darker −20%#781628

Darker −30%#4D0E1A

Darker −40%#22060B

More saturated +25%#ED0732

Less saturated −25%#B14458

Channel breakdown

R207

G37

B69

Red207 (81.2%)

Green37 (14.5%)

Blue69 (27.1%)

Hue348.71°

Saturation (HSL)69.67%

Lightness47.84%

Dominant channelRed

Hex per channelR CF · G 25 · B 45

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Harmonies

Lighter and darker

Similar named colours

Also reads as

CF2545 (chemical formula)

Formula
48,361.921 g/mol
2546 atoms

CF2545 has a molar mass of 48,361.921 g/mol, made up of 2546 atoms across 2 elements: 1 × C, 2545 × F.

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Molar mass

Molar mass48,361.921 g/mol

Total atoms per molecule2546

Distinct elements2

Mass of one molecule8.0306859 × 10^-20 g

Molecules per gram1.2452236 × 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, 0.025%

Fluorine (F × 2545)48,349.91 g/mol, 99.975%

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