Recognised as Colour

#CB1849

#CB1849
Red
Dark
Nearest: Crimson

#CB1849 is a red with RGB values 203, 24, 73 and HSL 344°, 79%, 45%. It is a dark colour, so white text on it reaches 5.6:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#CB1849#CB1849

HEX#CB1849

RGBrgb(203, 24, 73)

RGB (0–1)0.7961, 0.0941, 0.2863

RGB percentages79.6%, 9.4%, 28.6%

HSLhsl(343.6, 78.9%, 44.5%)

HSV / HSBhsv(343.6, 88.2%, 79.6%)

CMYK0%, 88.2%, 64%, 20.4%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer13,310,025

CSS custom property--colour: #CB1849;

Brightness & contrast

Relative luminance0.13831WCAG 2.x, 0 is black and 1 is white

Perceived brightness115.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.58:1

Contrast with white5.58:1WCAG normal text: AA

Contrast with black3.77:1WCAG normal text: Fail

Greyscale equivalent#424242

Inverted#34E7B6

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#535149no red cones; affects about 1% of men; ΔE 70 from the original

Deuteranopia#7F7544no green cones; the most common form, about 1% of men; ΔE 70.7 from the original

Tritanopia#DF0030no blue cones; rare, and affects men and women equally; ΔE 20.7 from the original

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

Contrast with white, large text5.58:1WCAG large text: AAA

Contrast with black, large text3.77:1WCAG large text: AA

Named colours

Crimson · ΔE 13.5 Firebrick · ΔE 20.3 Brown · ΔE 20.4 Indian red · ΔE 23.8 Dark red · ΔE 30.1 Maroon · ΔE 31.2

Nearest named CSS colourCrimson (#DC143C)ΔE 13.55, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#18CB9A

Analogous#CB18A2, #CB4018

Triadic#49CB18, #1849CB

Split complementary#18CB40, #18A2CB

Tetradic#A3CB18, #18CB9A, #4118CB

Tints, shades & saturation

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

Lighter +40%#F7B8C9

Lighter +30%#F18BA7

Lighter +20%#EC5D84

Lighter +10%#E63062

Darker −10%#9D1339

Darker −20%#700D28

Darker −30%#420818

Darker −40%#150207

More saturated +25%#E3003E

Less saturated −25%#AF3456

Channel breakdown

R203

G24

B73

Red203 (79.6%)

Green24 (9.4%)

Blue73 (28.6%)

Hue343.58°

Saturation (HSL)78.85%

Lightness44.51%

Dominant channelRed

Hex per channelR CB · G 18 · B 49

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Harmonies

Lighter and darker

Similar named colours

Also reads as

CB1849 (chemical formula)

Formula
19,999.701 g/mol
1850 atoms

CB1849 has a molar mass of 19,999.701 g/mol, made up of 1850 atoms across 2 elements: 1 × C, 1849 × B.

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Molar mass

Molar mass19,999.701 g/mol

Total atoms per molecule1850

Distinct elements2

Mass of one molecule3.3210285 × 10^-20 g

Molecules per gram3.0111154 × 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

C0.1%

B99.9%

Carbon (C)12.011 g/mol, 0.06%

Boron (B × 1849)19,987.69 g/mol, 99.94%

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