Recognised as Colour

#DB3F18

#DB3F18
Red
Dark
Nearest: Tomato

#DB3F18 is a red with RGB values 219, 63, 24 and HSL 12°, 80%, 48%. It is a dark colour, so black text on it reaches 4.7:1 contrast (AA for normal text). The nearest named colour is Tomato.

Colour values

#DB3F18#DB3F18

HEX#DB3F18

RGBrgb(219, 63, 24)

RGB (0–1)0.8588, 0.2471, 0.0941

RGB percentages85.9%, 24.7%, 9.4%

HSLhsl(12, 80.2%, 47.6%)

HSV / HSBhsv(12, 89%, 85.9%)

CMYK0%, 71.2%, 89%, 14.1%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer14,368,536

CSS custom property--colour: #DB3F18;

Brightness & contrast

Relative luminance0.18681WCAG 2.x, 0 is black and 1 is white

Perceived brightness129.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 4.74:1

Contrast with white4.43:1WCAG normal text: Fail

Contrast with black4.74:1WCAG normal text: AA

Greyscale equivalent#5D5D5D

Inverted#24C0E7

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6F620Eno red cones; affects about 1% of men; ΔE 64.3 from the original

Deuteranopia#958409no green cones; the most common form, about 1% of men; ΔE 64.3 from the original

Tritanopia#F20039no blue cones; rare, and affects men and women equally; ΔE 23.7 from the original

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

Contrast with white, large text4.43:1WCAG large text: AA

Contrast with black, large text4.74:1WCAG large text: AAA

Named colours

Tomato · ΔE 14.8 Orange red · ΔE 18 Firebrick · ΔE 20.9 Chocolate · ΔE 22.6 Coral · ΔE 23 Red · ΔE 24.6

Nearest named CSS colourTomato (#FF6347)ΔE 14.76, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#18B4DB

Analogous#DB1852, #DBA018

Triadic#18DB3F, #3F18DB

Split complementary#18DBA1, #1852DB

Tetradic#52DB18, #18B4DB, #A118DB

Tints, shades & saturation

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

Lighter +40%#F9D0C6

Lighter +30%#F4AB98

Lighter +20%#EF856A

Lighter +10%#EA5F3C

Darker −10%#AD3213

Darker −20%#7F250E

Darker −30%#511709

Darker −40%#230A04

More saturated +25%#F33100

Less saturated −25%#BD5136

Channel breakdown

R219

G63

B24

Red219 (85.9%)

Green63 (24.7%)

Blue24 (9.4%)

Hue12°

Saturation (HSL)80.25%

Lightness47.65%

Dominant channelRed

Hex per channelR DB · G 3F · B 18

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Harmonies

Lighter and darker

Similar named colours

Also reads as

Db3F18 (chemical formula)

Formula
1,145.964 g/mol
21 atoms

Db3F18 has a molar mass of 1,145.964 g/mol, made up of 21 atoms across 2 elements: 3 × Db, 18 × F.

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Molar mass

Molar mass1,145.964 g/mol

Total atoms per molecule21

Distinct elements2

Mass of one molecule1.902918 × 10^-21 g

Molecules per gram5.2550872 × 10^20

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

Db70.2%

F29.8%

Dubnium (Db × 3)804 g/mol, 70.159%

Fluorine (F × 18)341.964 g/mol, 29.841%

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Elements in this formula

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