Recognised as Colour

#F1640B

#F1640B
Orange
Dark
Nearest: Orange red

#F1640B is a orange with RGB values 241, 100, 11 and HSL 23°, 91%, 49%. It is a dark colour, so black text on it reaches 6.6:1 contrast (AA for normal text). The nearest named colour is Orange red.

Colour values

#F1640B#F1640B

HEX#F1640B

RGBrgb(241, 100, 11)

RGB (0–1)0.9451, 0.3922, 0.0431

RGB percentages94.5%, 39.2%, 4.3%

HSLhsl(23.2, 91.3%, 49.4%)

HSV / HSBhsv(23.2, 95.4%, 94.5%)

CMYK0%, 58.5%, 95.4%, 5.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer15,819,787

CSS custom property--colour: #F1640B;

Brightness & contrast

Relative luminance0.27839WCAG 2.x, 0 is black and 1 is white

Perceived brightness152.5 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 6.57:1

Contrast with white3.2:1WCAG normal text: Fail

Contrast with black6.57:1WCAG normal text: AA

Greyscale equivalent#7C7C7C

Inverted#0E9BF4

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#8D7C00no red cones; affects about 1% of men; ΔE 57 from the original

Deuteranopia#B09C00no green cones; the most common form, about 1% of men; ΔE 57 from the original

Tritanopia#FF3F56no blue cones; rare, and affects men and women equally; ΔE 40.1 from the original

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

Contrast with white, large text3.2:1WCAG large text: AA

Contrast with black, large text6.57:1WCAG large text: AAA

Named colours

Orange red · ΔE 17.1 Chocolate · ΔE 17.6 Dark orange · ΔE 19.3 Coral · ΔE 21.5 Tomato · ΔE 21.6 Red · ΔE 29.8

Nearest named CSS colourOrange red (#FF4500)ΔE 17.09, a distinctly different colour

Hue familyorange

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#0B98F1

Analogous#F10B25, #F1D70B

Triadic#0BF164, #640BF1

Split complementary#0BF1D7, #0B25F1

Tetradic#25F10B, #0B98F1, #D70BF1

Tints, shades & saturation

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

Lighter +40%#FDDECB

Lighter +30%#FAC09B

Lighter +20%#F8A16A

Lighter +10%#F68239

Darker −10%#C05009

Darker −20%#8F3C07

Darker −30%#5F2704

Darker −40%#2E1302

More saturated +25%#FC6200

Less saturated −25%#D26B2A

Channel breakdown

R241

G100

B11

Red241 (94.5%)

Green100 (39.2%)

Blue11 (4.3%)

Hue23.22°

Saturation (HSL)91.27%

Lightness49.41%

Dominant channelRed

Hex per channelR F1 · G 64 · B 0B

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Harmonies

Lighter and darker

Similar named colours

Also reads as

F1640B (chemical formula)

Formula
31,167.53 g/mol
1641 atoms

F1640B has a molar mass of 31,167.53 g/mol, made up of 1641 atoms across 2 elements: 1640 × F, 1 × B.

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Molar mass

Molar mass31,167.53 g/mol

Total atoms per molecule1641

Distinct elements2

Mass of one molecule5.1754901 × 10^-20 g

Molecules per gram1.9321842 × 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

F100%

B0%

Fluorine (F × 1640)31,156.72 g/mol, 99.965%

Boron (B)10.81 g/mol, 0.035%

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