Recognised as Colour

#B91B35

#B91B35
Red
Dark
Nearest: Firebrick

#B91B35 is a red with RGB values 185, 27, 53 and HSL 350°, 75%, 42%. It is a dark colour, so white text on it reaches 6.4:1 contrast (AA for normal text). The nearest named colour is Firebrick.

Colour values

#B91B35#B91B35

HEX#B91B35

RGBrgb(185, 27, 53)

RGB (0–1)0.7255, 0.1059, 0.2078

RGB percentages72.5%, 10.6%, 20.8%

HSLhsl(350.1, 74.5%, 41.6%)

HSV / HSBhsv(350.1, 85.4%, 72.5%)

CMYK0%, 85.4%, 71.4%, 27.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer12,131,125

CSS custom property--colour: #B91B35;

Brightness & contrast

Relative luminance0.11355WCAG 2.x, 0 is black and 1 is white

Perceived brightness104.8 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6.42:1

Contrast with white6.42:1WCAG normal text: AA

Contrast with black3.27:1WCAG normal text: Fail

Greyscale equivalent#3E3E3E

Inverted#46E4CA

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#4F4A35no red cones; affects about 1% of men; ΔE 64.4 from the original

Deuteranopia#766A30no green cones; the most common form, about 1% of men; ΔE 64 from the original

Tritanopia#CC0027no blue cones; rare, and affects men and women equally; ΔE 14.9 from the original

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

Contrast with white, large text6.42:1WCAG large text: AAA

Contrast with black, large text3.27:1WCAG large text: AA

Named colours

Firebrick · ΔE 10.7 Brown · ΔE 11.3 Crimson · ΔE 13.8 Dark red · ΔE 20.3 Indian red · ΔE 21.2 Maroon · ΔE 21.6

Nearest named CSS colourFirebrick (#B22222)ΔE 10.7, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1BB99F

Analogous#B91B84, #B9501B

Triadic#35B91B, #1B35B9

Split complementary#1BB950, #1B84B9

Tetradic#84B91B, #1BB99F, #501BB9

Tints, shades & saturation

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

Lighter +40%#F3ADB9

Lighter +30%#ED8092

Lighter +20%#E6546C

Lighter +10%#E02746

Darker −10%#8C1528

Darker −20%#600E1B

Darker −30%#33080F

Darker −40%#070102

More saturated +25%#D30023

Less saturated −25%#9F3547

Channel breakdown

R185

G27

B53

Red185 (72.5%)

Green27 (10.6%)

Blue53 (20.8%)

Hue350.13°

Saturation (HSL)74.53%

Lightness41.57%

Dominant channelRed

Hex per channelR B9 · G 1B · B 35

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Harmonies

Lighter and darker

Similar named colours

Also reads as

B91B35 (chemical formula)

Formula
1,362.06 g/mol
126 atoms

B91B35 has a molar mass of 1,362.06 g/mol, made up of 126 atoms across 1 element: 126 × B.

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Molar mass

Molar mass1,362.06 g/mol

Total atoms per molecule126

Distinct elements1

Mass of one molecule2.2617538 × 10^-21 g

Molecules per gram4.4213476 × 10^20

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 × 126)1,362.06 g/mol, 100%

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Elements in this formula

Boron

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