Recognised as Colour

#CD3039

#CD3039
Red
Dark
Nearest: Firebrick

#CD3039 is a red with RGB values 205, 48, 57 and HSL 357°, 62%, 50%. It is a dark colour, so white text on it reaches 5.1:1 contrast (AA for normal text). The nearest named colour is Firebrick.

Colour values

#CD3039#CD3039

HEX#CD3039

RGBrgb(205, 48, 57)

RGB (0–1)0.8039, 0.1882, 0.2235

RGB percentages80.4%, 18.8%, 22.4%

HSLhsl(356.6, 62.1%, 49.6%)

HSV / HSBhsv(356.6, 76.6%, 80.4%)

CMYK0%, 76.6%, 72.2%, 19.6%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer13,447,225

CSS custom property--colour: #CD3039;

Brightness & contrast

Relative luminance0.15388WCAG 2.x, 0 is black and 1 is white

Perceived brightness119.5 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.15:1

Contrast with white5.15:1WCAG normal text: AA

Contrast with black4.08:1WCAG normal text: Fail

Greyscale equivalent#525252

Inverted#32CFC6

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#5F5838no red cones; affects about 1% of men; ΔE 65.2 from the original

Deuteranopia#877933no green cones; the most common form, about 1% of men; ΔE 64.8 from the original

Tritanopia#E20035no blue cones; rare, and affects men and women equally; ΔE 14.4 from the original

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

Contrast with white, large text5.15:1WCAG large text: AAA

Contrast with black, large text4.08:1WCAG large text: AA

Named colours

Firebrick · ΔE 9.4 Crimson · ΔE 10.3 Brown · ΔE 14.3 Tomato · ΔE 20.7 Indian red · ΔE 20.8 Dark red · ΔE 21.9

Nearest named CSS colourFirebrick (#B22222)ΔE 9.39, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#30CDC4

Analogous#CD3088, #CD7630

Triadic#39CD30, #3039CD

Split complementary#30CD76, #3087CD

Tetradic#87CD30, #30CDC4, #7530CD

Tints, shades & saturation

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

Lighter +40%#F5D4D6

Lighter +30%#EBABAE

Lighter +20%#E28187

Lighter +10%#D8585F

Darker −10%#A4262E

Darker −20%#7A1D22

Darker −30%#511317

Darker −40%#28090B

More saturated +25%#ED101D

Less saturated −25%#AD5055

Channel breakdown

R205

G48

B57

Red205 (80.4%)

Green48 (18.8%)

Blue57 (22.4%)

Hue356.56°

Saturation (HSL)62.06%

Lightness49.61%

Dominant channelRed

Hex per channelR CD · G 30 · B 39

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Harmonies

Lighter and darker

Similar named colours

Also reads as

Cd3039 (chemical formula)

Formula
341,613.99 g/mol
3039 atoms

Cd3039 has a molar mass of 341,613.99 g/mol, made up of 3039 atoms across 1 element: 3039 × Cd.

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Molar mass

Molar mass341,613.99 g/mol

Total atoms per molecule3039

Distinct elements1

Mass of one molecule5.6726338 × 10^-19 g

Molecules per gram1.7628496 × 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

Cd100%

Cadmium (Cd × 3039)341,613.99 g/mol, 100%

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Elements in this formula

Cadmium

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