Recognised as Colour

#FF7523

#FF7523
Orange
Dark
Nearest: Dark orange

#FF7523 is a orange with RGB values 255, 117, 35 and HSL 22°, 100%, 57%. It is a dark colour, so black text on it reaches 7.8:1 contrast (AAA for normal text). The nearest named colour is Dark orange.

Colour values

#FF7523#FF7523

HEX#FF7523

RGBrgb(255, 117, 35)

RGB (0–1)1, 0.4588, 0.1373

RGB percentages100%, 45.9%, 13.7%

HSLhsl(22.4, 100%, 56.9%)

HSV / HSBhsv(22.4, 86.3%, 100%)

CMYK0%, 54.1%, 86.3%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,741,667

CSS custom property--colour: #FF7523;

Brightness & contrast

Relative luminance0.34104WCAG 2.x, 0 is black and 1 is white

Perceived brightness166.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 7.82:1

Contrast with white2.69:1WCAG normal text: Fail

Contrast with black7.82:1WCAG normal text: AAA

Greyscale equivalent#8C8C8C

Inverted#008ADC

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#9D8A10no red cones; affects about 1% of men; ΔE 54 from the original

Deuteranopia#BEAA1Dno green cones; the most common form, about 1% of men; ΔE 55.3 from the original

Tritanopia#FF5466no blue cones; rare, and affects men and women equally; ΔE 42 from the original

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

Contrast with white, large text2.69:1WCAG large text: Fail

Contrast with black, large text7.82:1WCAG large text: AAA

Named colours

Dark orange · ΔE 16.3 Chocolate · ΔE 16.9 Coral · ΔE 18.1 Orange red · ΔE 21 Tomato · ΔE 21.1 Orange · ΔE 29.9

Nearest named CSS colourDark orange (#FF8C00)ΔE 16.27, a distinctly different colour

Hue familyorange

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#23ADFF

Analogous#FF233F, #FFE323

Triadic#23FF75, #7523FF

Split complementary#23FFE3, #233FFF

Tetradic#3FFF23, #23ADFF, #E323FF

Tints, shades & saturation

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

Lighter +40%#FFF5EF

Lighter +30%#FFD5BC

Lighter +20%#FFB589

Lighter +10%#FF9556

Darker −10%#EF5900

Darker −20%#BC4600

Darker −30%#893300

Darker −40%#562000

More saturated +25%#FF7523

Less saturated −25%#E37C3E

Channel breakdown

R255

G117

B35

Red255 (100%)

Green117 (45.9%)

Blue35 (13.7%)

Hue22.36°

Saturation (HSL)100%

Lightness56.86%

Dominant channelRed

Hex per channelR FF · G 75 · B 23

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FF7523 (chemical formula)

Formula
142,940.952 g/mol
7524 atoms

FF7523 has a molar mass of 142,940.952 g/mol, made up of 7524 atoms across 1 element: 7524 × F.

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Molar mass

Molar mass142,940.952 g/mol

Total atoms per molecule7524

Distinct elements1

Mass of one molecule2.3735904 × 10^-19 g

Molecules per gram4.2130269 × 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 × 7524)142,940.952 g/mol, 100%

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Elements in this formula

Fluorine

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