Recognised as Colour

#FF8017

#FF8017
Orange
Dark
Nearest: Dark orange

#FF8017 is a orange with RGB values 255, 128, 23 and HSL 27°, 100%, 55%. It is a dark colour, so black text on it reaches 8.4:1 contrast (AAA for normal text). The nearest named colour is Dark orange.

Colour values

#FF8017#FF8017

HEX#FF8017

RGBrgb(255, 128, 23)

RGB (0–1)1, 0.502, 0.0902

RGB percentages100%, 50.2%, 9%

HSLhsl(27.2, 100%, 54.5%)

HSV / HSBhsv(27.2, 91%, 100%)

CMYK0%, 49.8%, 91%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,744,471

CSS custom property--colour: #FF8017;

Brightness & contrast

Relative luminance0.3676WCAG 2.x, 0 is black and 1 is white

Perceived brightness170.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 8.35:1

Contrast with white2.51:1WCAG normal text: Fail

Contrast with black8.35:1WCAG normal text: AAA

Greyscale equivalent#939393

Inverted#007FE8

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#A59100no red cones; affects about 1% of men; ΔE 48.9 from the original

Deuteranopia#C4AE11no green cones; the most common form, about 1% of men; ΔE 49.4 from the original

Tritanopia#FF636Eno blue cones; rare, and affects men and women equally; ΔE 47.9 from the original

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

Contrast with white, large text2.51:1WCAG large text: Fail

Contrast with black, large text8.35:1WCAG large text: AAA

Named colours

Dark orange · ΔE 8.5 Chocolate · ΔE 18.4 Orange · ΔE 22.4 Coral · ΔE 22.8 Orange red · ΔE 26.5 Tomato · ΔE 28.4

Nearest named CSS colourDark orange (#FF8C00)ΔE 8.53, clearly different but related

Hue familyorange

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1796FF

Analogous#FF1722, #FFF417

Triadic#17FF80, #8017FF

Split complementary#17FFF4, #1722FF

Tetradic#22FF17, #1796FF, #F417FF

Tints, shades & saturation

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

Lighter +40%#FFF0E3

Lighter +30%#FFD4B0

Lighter +20%#FFB87D

Lighter +10%#FF9C4A

Darker −10%#E36700

Darker −20%#B05000

Darker −30%#7D3900

Darker −40%#4A2100

More saturated +25%#FF8017

Less saturated −25%#E28334

Channel breakdown

R255

G128

B23

Red255 (100%)

Green128 (50.2%)

Blue23 (9%)

Hue27.16°

Saturation (HSL)100%

Lightness54.51%

Dominant channelRed

Hex per channelR FF · G 80 · B 17

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FF8017 (chemical formula)

Formula
152,325.964 g/mol
8018 atoms

FF8017 has a molar mass of 152,325.964 g/mol, made up of 8018 atoms across 1 element: 8018 × F.

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Molar mass

Molar mass152,325.964 g/mol

Total atoms per molecule8018

Distinct elements1

Mass of one molecule2.5294321 × 10^-19 g

Molecules per gram3.9534565 × 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

F100%

Fluorine (F × 8018)152,325.964 g/mol, 100%

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Elements in this formula

Fluorine

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