Recognised as Colour

#B30535

#B30535
Red
Dark
Nearest: Brown

#B30535 is a red with RGB values 179, 5, 53 and HSL 343°, 95%, 36%. It is a dark colour, so white text on it reaches 7:1 contrast (AAA for normal text). The nearest named colour is Brown.

Colour values

#B30535#B30535

HEX#B30535

RGBrgb(179, 5, 53)

RGB (0–1)0.702, 0.0196, 0.2078

RGB percentages70.2%, 2%, 20.8%

HSLhsl(343.4, 94.6%, 36.1%)

HSV / HSBhsv(343.4, 97.2%, 70.2%)

CMYK0%, 97.2%, 70.4%, 29.8%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,732,277

CSS custom property--colour: #B30535;

Brightness & contrast

Relative luminance0.09949WCAG 2.x, 0 is black and 1 is white

Perceived brightness99.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 7.02:1

Contrast with white7.02:1WCAG normal text: AAA

Contrast with black2.99:1WCAG normal text: Fail

Greyscale equivalent#2D2D2D

Inverted#4CFACA

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#474335no red cones; affects about 1% of men; ΔE 65.7 from the original

Deuteranopia#6F6530no green cones; the most common form, about 1% of men; ΔE 66.2 from the original

Tritanopia#C5001Fno blue cones; rare, and affects men and women equally; ΔE 18.7 from the original

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

Contrast with white, large text7.02:1WCAG large text: AAA

Contrast with black, large text2.99:1WCAG large text: Fail

Named colours

Brown · ΔE 13.7 Firebrick · ΔE 14.4 Crimson · ΔE 15.6 Dark red · ΔE 22.2 Maroon · ΔE 22.9 Indian red · ΔE 23.5

Nearest named CSS colourBrown (#A52A2A)ΔE 13.73, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#05B383

Analogous#B3058C, #B32C05

Triadic#35B305, #0535B3

Split complementary#05B32C, #058CB3

Tetradic#8CB305, #05B383, #2C05B3

Tints, shades & saturation

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

Lighter +40%#FC88A8

Lighter +30%#FA5784

Lighter +20%#F92560

Lighter +10%#E50644

Darker −10%#810426

Darker −20%#500218

Darker −30%#1E0109

Darker −40%#000000

More saturated +25%#B80033

Less saturated −25%#9C1C3F

Channel breakdown

R179

B53

Red179 (70.2%)

Green5 (2%)

Blue53 (20.8%)

Hue343.45°

Saturation (HSL)94.57%

Lightness36.08%

Dominant channelRed

Hex per channelR B3 · G 05 · B 35

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Harmonies

Lighter and darker

Similar named colours

Also reads as

B30535 (chemical formula)

Formula
330,083.35 g/mol
30535 atoms

B30535 has a molar mass of 330,083.35 g/mol, made up of 30535 atoms across 1 element: 30535 × B.

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Molar mass

Molar mass330,083.35 g/mol

Total atoms per molecule30535

Distinct elements1

Mass of one molecule5.481163 × 10^-19 g

Molecules per gram1.8244303 × 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 × 30535)330,083.35 g/mol, 100%

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Elements in this formula

Boron

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