Recognised as Colour

#FF6628

#FF6628
Orange
Dark
Nearest: Tomato

#FF6628 is a orange with RGB values 255, 102, 40 and HSL 17°, 100%, 58%. It is a dark colour, so black text on it reaches 7.2:1 contrast (AAA for normal text). The nearest named colour is Tomato.

Colour values

#FF6628#FF6628

HEX#FF6628

RGBrgb(255, 102, 40)

RGB (0–1)1, 0.4, 0.1569

RGB percentages100%, 40%, 15.7%

HSLhsl(17.3, 100%, 57.8%)

HSV / HSBhsv(17.3, 84.3%, 100%)

CMYK0%, 60%, 84.3%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,737,832

CSS custom property--colour: #FF6628;

Brightness & contrast

Relative luminance0.30916WCAG 2.x, 0 is black and 1 is white

Perceived brightness160.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 7.18:1

Contrast with white2.92:1WCAG normal text: Fail

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

Greyscale equivalent#828282

Inverted#0099D7

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#92811Dno red cones; affects about 1% of men; ΔE 61.1 from the original

Deuteranopia#B8A420no green cones; the most common form, about 1% of men; ΔE 61.7 from the original

Tritanopia#FF3E5Ano blue cones; rare, and affects men and women equally; ΔE 35.5 from the original

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

Contrast with white, large text2.92:1WCAG large text: Fail

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

Named colours

Tomato · ΔE 14.9 Orange red · ΔE 15.3 Coral · ΔE 17.7 Chocolate · ΔE 20.1 Dark orange · ΔE 24.6 Red · ΔE 26.9

Nearest named CSS colourTomato (#FF6347)ΔE 14.93, a distinctly different colour

Hue familyorange

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#28C1FF

Analogous#FF2856, #FFD128

Triadic#28FF66, #6628FF

Split complementary#28FFD1, #2856FF

Tetradic#56FF28, #28C1FF, #D128FF

Tints, shades & saturation

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

Lighter +40%#FFF7F4

Lighter +30%#FFD3C1

Lighter +20%#FFAF8E

Lighter +10%#FF8A5B

Darker −10%#F44600

Darker −20%#C13800

Darker −30%#8E2900

Darker −40%#5B1A00

More saturated +25%#FF6628

Less saturated −25%#E47143

Channel breakdown

R255

G102

B40

Red255 (100%)

Green102 (40%)

Blue40 (15.7%)

Hue17.3°

Saturation (HSL)100%

Lightness57.84%

Dominant channelRed

Hex per channelR FF · G 66 · B 28

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Harmonies

Lighter and darker

Similar named colours

Also reads as

FF6628 (chemical formula)

Formula
125,937.742 g/mol
6629 atoms

FF6628 has a molar mass of 125,937.742 g/mol, made up of 6629 atoms across 1 element: 6629 × F.

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Molar mass

Molar mass125,937.742 g/mol

Total atoms per molecule6629

Distinct elements1

Mass of one molecule2.0912454 × 10^-19 g

Molecules per gram4.7818396 × 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 × 6629)125,937.742 g/mol, 100%

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Elements in this formula

Fluorine

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