Recognised as Colour

#FF4804

#FF4804
Orange
Dark
Nearest: Orange red

#FF4804 is a orange with RGB values 255, 72, 4 and HSL 16°, 100%, 51%. It is a dark colour, so black text on it reaches 6.2:1 contrast (AA for normal text). The nearest named colour is Orange red.

Colour values

#FF4804#FF4804

HEX#FF4804

RGBrgb(255, 72, 4)

RGB (0–1)1, 0.2824, 0.0157

RGB percentages100%, 28.2%, 1.6%

HSLhsl(16.3, 100%, 50.8%)

HSV / HSBhsv(16.3, 98.4%, 100%)

CMYK0%, 71.8%, 98.4%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,730,116

CSS custom property--colour: #FF4804;

Brightness & contrast

Relative luminance0.25903WCAG 2.x, 0 is black and 1 is white

Perceived brightness150 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 6.18:1

Contrast with white3.4:1WCAG normal text: Fail

Contrast with black6.18:1WCAG normal text: AA

Greyscale equivalent#6A6A6A

Inverted#00B7FB

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#817100no red cones; affects about 1% of men; ΔE 73.2 from the original

Deuteranopia#AE9A00no green cones; the most common form, about 1% of men; ΔE 72.8 from the original

Tritanopia#FF003Fno blue cones; rare, and affects men and women equally; ΔE 30.9 from the original

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

Contrast with white, large text3.4:1WCAG large text: AA

Contrast with black, large text6.18:1WCAG large text: AAA

Named colours

Orange red · ΔE 1.2 Red · ΔE 14.1 Tomato · ΔE 24 Coral · ΔE 31.3 Chocolate · ΔE 32 Dark orange · ΔE 32.9

Nearest named CSS colourOrange red (#FF4500)ΔE 1.22, below the just-noticeable difference

Hue familyorange

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#04BBFF

Analogous#FF043E, #FFC604

Triadic#04FF48, #4804FF

Split complementary#04FFC5, #043EFF

Tetradic#3DFF04, #04BBFF, #C504FF

Tints, shades & saturation

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

Lighter +40%#FFDDD0

Lighter +30%#FFB89D

Lighter +20%#FF926A

Lighter +10%#FF6D37

Darker −10%#D03800

Darker −20%#9D2B00

Darker −30%#6A1D00

Darker −40%#370F00

More saturated +25%#FF4804

Less saturated −25%#E05623

Channel breakdown

R255

G72

Red255 (100%)

Green72 (28.2%)

Blue4 (1.6%)

Hue16.25°

Saturation (HSL)100%

Lightness50.78%

Dominant channelRed

Hex per channelR FF · G 48 · B 04

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FF4804 (chemical formula)

Formula
91,285.39 g/mol
4805 atoms

FF4804 has a molar mass of 91,285.39 g/mol, made up of 4805 atoms across 1 element: 4805 × F.

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Molar mass

Molar mass91,285.39 g/mol

Total atoms per molecule4805

Distinct elements1

Mass of one molecule1.5158296 × 10^-19 g

Molecules per gram6.5970477 × 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 × 4805)91,285.39 g/mol, 100%

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Elements in this formula

Fluorine

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