Recognised as Colour

#CD451F

#CD451F
Red
Dark
Nearest: Tomato

#CD451F is a red with RGB values 205, 69, 31 and HSL 13°, 74%, 46%. It is a dark colour, so white text on it reaches 4.7:1 contrast (AA for normal text). The nearest named colour is Tomato.

Colour values

#CD451F#CD451F

HEX#CD451F

RGBrgb(205, 69, 31)

RGB (0–1)0.8039, 0.2706, 0.1216

RGB percentages80.4%, 27.1%, 12.2%

HSLhsl(13.1, 73.7%, 46.3%)

HSV / HSBhsv(13.1, 84.9%, 80.4%)

CMYK0%, 66.3%, 84.9%, 19.6%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer13,452,575

CSS custom property--colour: #CD451F;

Brightness & contrast

Relative luminance0.17334WCAG 2.x, 0 is black and 1 is white

Perceived brightness124.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 4.7:1

Contrast with white4.7:1WCAG normal text: AA

Contrast with black4.47:1WCAG normal text: Fail

Greyscale equivalent#5F5F5F

Inverted#32BAE0

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6D6018no red cones; affects about 1% of men; ΔE 56.8 from the original

Deuteranopia#8E7F17no green cones; the most common form, about 1% of men; ΔE 57.7 from the original

Tritanopia#E2193Eno blue cones; rare, and affects men and women equally; ΔE 25 from the original

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

Contrast with white, large text4.7:1WCAG large text: AAA

Contrast with black, large text4.47:1WCAG large text: AA

Named colours

Tomato · ΔE 15.1 Firebrick · ΔE 16 Chocolate · ΔE 18.1 Coral · ΔE 19.9 Dark red · ΔE 22.3 Brown · ΔE 22.4

Nearest named CSS colourTomato (#FF6347)ΔE 15.09, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1FA7CD

Analogous#CD1F50, #CD9C1F

Triadic#1FCD45, #451FCD

Split complementary#1FCD9C, #1F50CD

Tetradic#50CD1F, #1FA7CD, #9C1FCD

Tints, shades & saturation

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

Lighter +40%#F6CDC2

Lighter +30%#EFA996

Lighter +20%#E8856A

Lighter +10%#E2613D

Darker −10%#A13618

Darker −20%#742712

Darker −30%#48180B

Darker −40%#1C0904

More saturated +25%#EB3401

Less saturated −25%#B0563C

Channel breakdown

R205

G69

B31

Red205 (80.4%)

Green69 (27.1%)

Blue31 (12.2%)

Hue13.1°

Saturation (HSL)73.73%

Lightness46.27%

Dominant channelRed

Hex per channelR CD · G 45 · B 1F

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Harmonies

Lighter and darker

Similar named colours

Also reads as

Cd451F (chemical formula)

Formula
50,715.908 g/mol
452 atoms

Cd451F has a molar mass of 50,715.908 g/mol, made up of 452 atoms across 2 elements: 451 × Cd, 1 × F.

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Molar mass

Molar mass50,715.908 g/mol

Total atoms per molecule452

Distinct elements2

Mass of one molecule8.4215747 × 10^-20 g

Molecules per gram1.1874264 × 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

Cd100%

F0%

Cadmium (Cd × 451)50,696.91 g/mol, 99.963%

Fluorine (F)18.998 g/mol, 0.037%

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