Recognised as Colour

#CB4555

#CB4555
Red
Dark
Nearest: Indian red

#CB4555 is a red with RGB values 203, 69, 85 and HSL 353°, 56%, 53%. It is a dark colour, so white text on it reaches 4.6:1 contrast (AA for normal text). The nearest named colour is Indian red.

Colour values

#CB4555#CB4555

HEX#CB4555

RGBrgb(203, 69, 85)

RGB (0–1)0.7961, 0.2706, 0.3333

RGB percentages79.6%, 27.1%, 33.3%

HSLhsl(352.8, 56.3%, 53.3%)

HSV / HSBhsv(352.8, 66%, 79.6%)

CMYK0%, 66%, 58.1%, 20.4%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer13,321,557

CSS custom property--colour: #CB4555;

Brightness & contrast

Relative luminance0.17609WCAG 2.x, 0 is black and 1 is white

Perceived brightness126.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 4.64:1

Contrast with white4.64:1WCAG normal text: AA

Contrast with black4.52:1WCAG normal text: AA

Greyscale equivalent#636363

Inverted#34BAAA

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#676355no red cones; affects about 1% of men; ΔE 56.8 from the original

Deuteranopia#897F52no green cones; the most common form, about 1% of men; ΔE 57.6 from the original

Tritanopia#DE294Cno blue cones; rare, and affects men and women equally; ΔE 15.5 from the original

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

Contrast with white, large text4.64:1WCAG large text: AAA

Contrast with black, large text4.52:1WCAG large text: AAA

Named colours

Indian red · ΔE 10.3 Brown · ΔE 15.9 Firebrick · ΔE 20 Light coral · ΔE 20.5 Crimson · ΔE 21.6 Salmon · ΔE 22

Nearest named CSS colourIndian red (#CD5C5C)ΔE 10.3, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#45CBBB

Analogous#CB4598, #CB7845

Triadic#55CB45, #4555CB

Split complementary#45CB78, #4598CB

Tetradic#98CB45, #45CBBB, #7845CB

Tints, shades & saturation

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

Lighter +40%#F8E4E7

Lighter +30%#ECBDC2

Lighter +20%#E1959E

Lighter +10%#D66D79

Darker −10%#AD303F

Darker −20%#852531

Darker −30%#5D1A22

Darker −40%#350F13

More saturated +25%#E9273E

Less saturated −25%#AD636C

Channel breakdown

R203

G69

B85

Red203 (79.6%)

Green69 (27.1%)

Blue85 (33.3%)

Hue352.84°

Saturation (HSL)56.3%

Lightness53.33%

Dominant channelRed

Hex per channelR CB · G 45 · B 55

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Harmonies

Lighter and darker

Similar named colours

Also reads as

CB4555 (chemical formula)

Formula
49,251.561 g/mol
4556 atoms

CB4555 has a molar mass of 49,251.561 g/mol, made up of 4556 atoms across 2 elements: 1 × C, 4555 × B.

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Molar mass

Molar mass49,251.561 g/mol

Total atoms per molecule4556

Distinct elements2

Mass of one molecule8.1784141 × 10^-20 g

Molecules per gram1.2227309 × 10^19

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

C0%

B100%

Carbon (C)12.011 g/mol, 0.024%

Boron (B × 4555)49,239.55 g/mol, 99.976%

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