Recognised as Colour

#C9105B

#C9105B
Red
Dark
Nearest: Medium violet red

#C9105B is a red with RGB values 201, 16, 91 and HSL 336°, 85%, 43%. It is a dark colour, so white text on it reaches 5.7:1 contrast (AA for normal text). The nearest named colour is Medium violet red.

Colour values

#C9105B#C9105B

HEX#C9105B

RGBrgb(201, 16, 91)

RGB (0–1)0.7882, 0.0627, 0.3569

RGB percentages78.8%, 6.3%, 35.7%

HSLhsl(335.7, 85.3%, 42.5%)

HSV / HSBhsv(335.7, 92%, 78.8%)

CMYK0%, 92%, 54.7%, 21.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer13,176,923

CSS custom property--colour: #C9105B;

Brightness & contrast

Relative luminance0.13543WCAG 2.x, 0 is black and 1 is white

Perceived brightness114.8 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.66:1

Contrast with white5.66:1WCAG normal text: AA

Contrast with black3.71:1WCAG normal text: Fail

Greyscale equivalent#3D3D3D

Inverted#36EFA4

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#4C515Cno red cones; affects about 1% of men; ΔE 70.4 from the original

Deuteranopia#7A7357no green cones; the most common form, about 1% of men; ΔE 71.1 from the original

Tritanopia#DC0037no blue cones; rare, and affects men and women equally; ΔE 27 from the original

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

Contrast with white, large text5.66:1WCAG large text: AAA

Contrast with black, large text3.71:1WCAG large text: AA

Named colours

Medium violet red · ΔE 24.5 Crimson · ΔE 24.8 Deep pink · ΔE 25.2 Indian red · ΔE 28.7 Brown · ΔE 29.1 Hot pink · ΔE 29.9

Nearest named CSS colourMedium violet red (#C71585)ΔE 24.53, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#10C97E

Analogous#C910B8, #C92210

Triadic#5BC910, #105BC9

Split complementary#10C922, #10B8C9

Tetradic#B8C910, #10C97E, #2110C9

Tints, shades & saturation

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

Lighter +40%#F8ADCB

Lighter +30%#F57DAE

Lighter +20%#F14E90

Lighter +10%#ED1F72

Darker −10%#9A0C46

Darker −20%#6B0830

Darker −30%#3B051B

Darker −40%#0C0105

More saturated +25%#D90058

Less saturated −25%#AE2B60

Channel breakdown

R201

G16

B91

Red201 (78.8%)

Green16 (6.3%)

Blue91 (35.7%)

Hue335.68°

Saturation (HSL)85.25%

Lightness42.55%

Dominant channelRed

Hex per channelR C9 · G 10 · B 5B

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Harmonies

Lighter and darker

Similar named colours

Also reads as

C9105B (chemical formula)

Formula
109,370.965 g/mol
9106 atoms

C9105B has a molar mass of 109,370.965 g/mol, made up of 9106 atoms across 2 elements: 9105 × C, 1 × B.

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Molar mass

Molar mass109,370.965 g/mol

Total atoms per molecule9106

Distinct elements2

Mass of one molecule1.8161476 × 10^-19 g

Molecules per gram5.5061604 × 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

C100%

B0%

Carbon (C × 9105)109,360.155 g/mol, 99.99%

Boron (B)10.81 g/mol, 0.01%

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