Recognised as Colour

#B31253

#B31253
Red
Dark
Nearest: Medium violet red

#B31253 is a red with RGB values 179, 18, 83 and HSL 336°, 82%, 39%. It is a dark colour, so white text on it reaches 6.7:1 contrast (AA for normal text). The nearest named colour is Medium violet red.

Colour values

#B31253#B31253

HEX#B31253

RGBrgb(179, 18, 83)

RGB (0–1)0.702, 0.0706, 0.3255

RGB percentages70.2%, 7.1%, 32.5%

HSLhsl(335.8, 81.7%, 38.6%)

HSV / HSBhsv(335.8, 89.9%, 70.2%)

CMYK0%, 89.9%, 53.6%, 29.8%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,735,635

CSS custom property--colour: #B31253;

Brightness & contrast

Relative luminance0.10641WCAG 2.x, 0 is black and 1 is white

Perceived brightness102.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6.71:1

Contrast with white6.71:1WCAG normal text: AA

Contrast with black3.13:1WCAG normal text: Fail

Greyscale equivalent#393939

Inverted#4CEDAC

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#444854no red cones; affects about 1% of men; ΔE 63.3 from the original

Deuteranopia#6C674Fno green cones; the most common form, about 1% of men; ΔE 65.1 from the original

Tritanopia#C40033no blue cones; rare, and affects men and women equally; ΔE 24.3 from the original

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

Contrast with white, large text6.71:1WCAG large text: AAA

Contrast with black, large text3.13:1WCAG large text: AA

Named colours

Medium violet red · ΔE 24.6 Brown · ΔE 26.6 Indian red · ΔE 27.1 Pale violetred · ΔE 28.1 Crimson · ΔE 29 Deep pink · ΔE 30.8

Nearest named CSS colourMedium violet red (#C71585)ΔE 24.64, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#12B372

Analogous#B312A3, #B32112

Triadic#53B312, #1253B3

Split complementary#12B321, #12A4B3

Tetradic#A3B312, #12B372, #2212B3

Tints, shades & saturation

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

Lighter +40%#F59CC0

Lighter +30%#F06EA2

Lighter +20%#EC3F85

Lighter +10%#E11768

Darker −10%#850D3E

Darker −20%#560928

Darker −30%#280413

Darker −40%#000000

More saturated +25%#C50050

Less saturated −25%#9A2B58

Channel breakdown

R179

G18

B83

Red179 (70.2%)

Green18 (7.1%)

Blue83 (32.5%)

Hue335.78°

Saturation (HSL)81.73%

Lightness38.63%

Dominant channelRed

Hex per channelR B3 · G 12 · B 53

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Harmonies

Lighter and darker

Similar named colours

Also reads as

B31253 (chemical formula)

Formula
337,844.93 g/mol
31253 atoms

B31253 has a molar mass of 337,844.93 g/mol, made up of 31253 atoms across 1 element: 31253 × B.

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Molar mass

Molar mass337,844.93 g/mol

Total atoms per molecule31253

Distinct elements1

Mass of one molecule5.610047 × 10^-19 g

Molecules per gram1.7825162 × 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

B100%

Boron (B × 31253)337,844.93 g/mol, 100%

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Elements in this formula

Boron

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