Recognised as Colour

#FF6623

#FF6623
Orange
Dark
Nearest: Orange red

#FF6623 is a orange with RGB values 255, 102, 35 and HSL 18°, 100%, 57%. It is a dark colour, so black text on it reaches 7.2:1 contrast (AAA for normal text). The nearest named colour is Orange red.

Colour values

#FF6623#FF6623

HEX#FF6623

RGBrgb(255, 102, 35)

RGB (0–1)1, 0.4, 0.1373

RGB percentages100%, 40%, 13.7%

HSLhsl(18.3, 100%, 56.9%)

HSV / HSBhsv(18.3, 86.3%, 100%)

CMYK0%, 60%, 86.3%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,737,827

CSS custom property--colour: #FF6623;

Brightness & contrast

Relative luminance0.30884WCAG 2.x, 0 is black and 1 is white

Perceived brightness160.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 7.18:1

Contrast with white2.93:1WCAG normal text: Fail

Contrast with black7.18:1WCAG normal text: AAA

Greyscale equivalent#828282

Inverted#0099DC

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#928115no red cones; affects about 1% of men; ΔE 61.2 from the original

Deuteranopia#B8A41Ano green cones; the most common form, about 1% of men; ΔE 61.8 from the original

Tritanopia#FF3E5Ano blue cones; rare, and affects men and women equally; ΔE 37.2 from the original

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

Contrast with white, large text2.93:1WCAG large text: Fail

Contrast with black, large text7.18:1WCAG large text: AAA

Named colours

Orange red · ΔE 14.5 Tomato · ΔE 16.8 Coral · ΔE 19.1 Chocolate · ΔE 20.5 Dark orange · ΔE 23.5 Red · ΔE 26.7

Nearest named CSS colourOrange red (#FF4500)ΔE 14.54, a distinctly different colour

Hue familyorange

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#23BCFF

Analogous#FF234E, #FFD423

Triadic#23FF66, #6623FF

Split complementary#23FFD4, #234EFF

Tetradic#4EFF23, #23BCFF, #D423FF

Tints, shades & saturation

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

Lighter +40%#FFF4EF

Lighter +30%#FFD0BC

Lighter +20%#FFAD89

Lighter +10%#FF8956

Darker −10%#EF4900

Darker −20%#BC3900

Darker −30%#892A00

Darker −40%#561A00

More saturated +25%#FF6623

Less saturated −25%#E3713E

Channel breakdown

R255

G102

B35

Red255 (100%)

Green102 (40%)

Blue35 (13.7%)

Hue18.27°

Saturation (HSL)100%

Lightness56.86%

Dominant channelRed

Hex per channelR FF · G 66 · B 23

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FF6623 (chemical formula)

Formula
125,842.752 g/mol
6624 atoms

FF6623 has a molar mass of 125,842.752 g/mol, made up of 6624 atoms across 1 element: 6624 × F.

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Molar mass

Molar mass125,842.752 g/mol

Total atoms per molecule6624

Distinct elements1

Mass of one molecule2.0896681 × 10^-19 g

Molecules per gram4.785449 × 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 × 6624)125,842.752 g/mol, 100%

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Elements in this formula

Fluorine

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