Recognised as Colour

#CB2156

#CB2156
Red
Dark
Nearest: Crimson

#CB2156 is a red with RGB values 203, 33, 86 and HSL 341°, 72%, 46%. It is a dark colour, so white text on it reaches 5.4:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#CB2156#CB2156

HEX#CB2156

RGBrgb(203, 33, 86)

RGB (0–1)0.7961, 0.1294, 0.3373

RGB percentages79.6%, 12.9%, 33.7%

HSLhsl(341.3, 72%, 46.3%)

HSV / HSBhsv(341.3, 83.7%, 79.6%)

CMYK0%, 83.7%, 57.6%, 20.4%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer13,312,342

CSS custom property--colour: #CB2156;

Brightness & contrast

Relative luminance0.14456WCAG 2.x, 0 is black and 1 is white

Perceived brightness117.5 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.4:1

Contrast with white5.4:1WCAG normal text: AA

Contrast with black3.89:1WCAG normal text: Fail

Greyscale equivalent#494949

Inverted#34DEA9

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#545457no red cones; affects about 1% of men; ΔE 67.5 from the original

Deuteranopia#7F7652no green cones; the most common form, about 1% of men; ΔE 68.5 from the original

Tritanopia#DE003Ano blue cones; rare, and affects men and women equally; ΔE 21.8 from the original

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

Contrast with white, large text5.4:1WCAG large text: AAA

Contrast with black, large text3.89:1WCAG large text: AA

Named colours

Crimson · ΔE 20.2 Indian red · ΔE 23.8 Brown · ΔE 24 Firebrick · ΔE 26 Pale violetred · ΔE 29 Deep pink · ΔE 29.6

Nearest named CSS colourCrimson (#DC143C)ΔE 20.21, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#21CB96

Analogous#CB21AB, #CB4121

Triadic#56CB21, #2156CB

Split complementary#21CB41, #21ABCB

Tetradic#ABCB21, #21CB96, #4121CB

Tints, shades & saturation

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

Lighter +40%#F5C3D3

Lighter +30%#EE97B2

Lighter +20%#E76B92

Lighter +10%#E03F71

Darker −10%#9F1A43

Darker −20%#731331

Darker −30%#470C1E

Darker −40%#1C040C

More saturated +25%#E8044B

Less saturated −25%#AE3E61

Channel breakdown

R203

G33

B86

Red203 (79.6%)

Green33 (12.9%)

Blue86 (33.7%)

Hue341.29°

Saturation (HSL)72.03%

Lightness46.27%

Dominant channelRed

Hex per channelR CB · G 21 · B 56

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Harmonies

Lighter and darker

Similar named colours

Also reads as

CB2156 (chemical formula)

Formula
23,318.371 g/mol
2157 atoms

CB2156 has a molar mass of 23,318.371 g/mol, made up of 2157 atoms across 2 elements: 1 × C, 2156 × B.

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Molar mass

Molar mass23,318.371 g/mol

Total atoms per molecule2157

Distinct elements2

Mass of one molecule3.8721066 × 10^-20 g

Molecules per gram2.5825735 × 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, 0.052%

Boron (B × 2156)23,306.36 g/mol, 99.948%

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