Recognised as Colour

#DB551F

#DB551F
Orange
Dark
Nearest: Chocolate

#DB551F is a orange with RGB values 219, 85, 31 and HSL 17°, 75%, 49%. It is a dark colour, so black text on it reaches 5.3:1 contrast (AA for normal text). The nearest named colour is Chocolate.

Colour values

#DB551F#DB551F

HEX#DB551F

RGBrgb(219, 85, 31)

RGB (0–1)0.8588, 0.3333, 0.1216

RGB percentages85.9%, 33.3%, 12.2%

HSLhsl(17.2, 75.2%, 49%)

HSV / HSBhsv(17.2, 85.8%, 85.9%)

CMYK0%, 61.2%, 85.8%, 14.1%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer14,374,175

CSS custom property--colour: #DB551F;

Brightness & contrast

Relative luminance0.21656WCAG 2.x, 0 is black and 1 is white

Perceived brightness136.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.33:1

Contrast with white3.94:1WCAG normal text: Fail

Contrast with black5.33:1WCAG normal text: AA

Greyscale equivalent#6E6E6E

Inverted#24AAE0

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#7C6D15no red cones; affects about 1% of men; ΔE 55 from the original

Deuteranopia#9D8B17no green cones; the most common form, about 1% of men; ΔE 55.3 from the original

Tritanopia#F1314Bno blue cones; rare, and affects men and women equally; ΔE 30.3 from the original

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

Contrast with white, large text3.94:1WCAG large text: AA

Contrast with black, large text5.33:1WCAG large text: AAA

Named colours

Chocolate · ΔE 13.4 Tomato · ΔE 14.4 Coral · ΔE 16.3 Orange red · ΔE 22.8 Firebrick · ΔE 23.4 Dark red · ΔE 29

Nearest named CSS colourChocolate (#D2691E)ΔE 13.38, a distinctly different colour

Hue familyorange

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1FA5DB

Analogous#DB1F47, #DBB31F

Triadic#1FDB55, #551FDB

Split complementary#1FDBB3, #1F47DB

Tetradic#47DB1F, #1FA5DB, #B31FDB

Tints, shades & saturation

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

Lighter +40%#F8DACE

Lighter +30%#F2B8A1

Lighter +20%#EB9775

Lighter +10%#E57548

Darker −10%#AE4419

Darker −20%#823212

Darker −30%#55210C

Darker −40%#281006

More saturated +25%#FA4800

Less saturated −25%#BC623E

Channel breakdown

R219

G85

B31

Red219 (85.9%)

Green85 (33.3%)

Blue31 (12.2%)

Hue17.23°

Saturation (HSL)75.2%

Lightness49.02%

Dominant channelRed

Hex per channelR DB · G 55 · B 1F

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Harmonies

Lighter and darker

Similar named colours

Also reads as

Db551F (chemical formula)

Formula
147,686.998 g/mol
552 atoms

Db551F has a molar mass of 147,686.998 g/mol, made up of 552 atoms across 2 elements: 551 × Db, 1 × F.

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Molar mass

Molar mass147,686.998 g/mol

Total atoms per molecule552

Distinct elements2

Mass of one molecule2.4524003 × 10^-19 g

Molecules per gram4.0776377 × 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 × 551)147,668 g/mol, 99.987%

Fluorine (F)18.998 g/mol, 0.013%

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