Recognised as Colour

#DB391F

#DB391F
Red
Dark
Nearest: Tomato

#DB391F is a red with RGB values 219, 57, 31 and HSL 8°, 75%, 49%. It is a dark colour, so black text on it reaches 4.6:1 contrast (AA for normal text). The nearest named colour is Tomato.

Colour values

#DB391F#DB391F

HEX#DB391F

RGBrgb(219, 57, 31)

RGB (0–1)0.8588, 0.2235, 0.1216

RGB percentages85.9%, 22.4%, 12.2%

HSLhsl(8.3, 75.2%, 49%)

HSV / HSBhsv(8.3, 85.8%, 85.9%)

CMYK0%, 74%, 85.8%, 14.1%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer14,367,007

CSS custom property--colour: #DB391F;

Brightness & contrast

Relative luminance0.18085WCAG 2.x, 0 is black and 1 is white

Perceived brightness127.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 4.62:1

Contrast with white4.55:1WCAG normal text: AA

Contrast with black4.62:1WCAG normal text: AA

Greyscale equivalent#5A5A5A

Inverted#24C6E0

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6B5F19no red cones; affects about 1% of men; ΔE 66.6 from the original

Deuteranopia#938313no green cones; the most common form, about 1% of men; ΔE 66.8 from the original

Tritanopia#F20035no blue cones; rare, and affects men and women equally; ΔE 18.8 from the original

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

Contrast with white, large text4.55:1WCAG large text: AAA

Contrast with black, large text4.62:1WCAG large text: AAA

Named colours

Tomato · ΔE 14 Firebrick · ΔE 18.3 Orange red · ΔE 20.2 Crimson · ΔE 20.7 Coral · ΔE 24.1 Red · ΔE 24.8

Nearest named CSS colourTomato (#FF6347)ΔE 14.03, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1FC1DB

Analogous#DB1F63, #DB971F

Triadic#1FDB39, #391FDB

Split complementary#1FDB97, #1F63DB

Tetradic#63DB1F, #1FC1DB, #971FDB

Tints, shades & saturation

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

Lighter +40%#F8D4CE

Lighter +30%#F2ACA1

Lighter +20%#EB8575

Lighter +10%#E55E48

Darker −10%#AE2D19

Darker −20%#822212

Darker −30%#55160C

Darker −40%#280A06

More saturated +25%#FA2300

Less saturated −25%#BC503E

Channel breakdown

R219

G57

B31

Red219 (85.9%)

Green57 (22.4%)

Blue31 (12.2%)

Hue8.3°

Saturation (HSL)75.2%

Lightness49.02%

Dominant channelRed

Hex per channelR DB · G 39 · B 1F

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Harmonies

Lighter and darker

Similar named colours

Also reads as

Db391F (chemical formula)

Formula
104,806.998 g/mol
392 atoms

Db391F has a molar mass of 104,806.998 g/mol, made up of 392 atoms across 2 elements: 391 × Db, 1 × F.

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Molar mass

Molar mass104,806.998 g/mol

Total atoms per molecule392

Distinct elements2

Mass of one molecule1.7403611 × 10^-19 g

Molecules per gram5.7459338 × 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

Db100%

F0%

Dubnium (Db × 391)104,788 g/mol, 99.982%

Fluorine (F)18.998 g/mol, 0.018%

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