Recognised as Colour

#B40044

#B40044
Red
Dark
Nearest: Brown

#B40044 is a red with RGB values 180, 0, 68 and HSL 337°, 100%, 35%. It is a dark colour, so white text on it reaches 6.9:1 contrast (AA for normal text). The nearest named colour is Brown.

Colour values

#B40044#B40044

HEX#B40044

RGBrgb(180, 0, 68)

RGB (0–1)0.7059, 0, 0.2667

RGB percentages70.6%, 0%, 26.7%

HSLhsl(337.3, 100%, 35.3%)

HSV / HSBhsv(337.3, 100%, 70.6%)

CMYK0%, 100%, 62.2%, 29.4%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,796,548

CSS custom property--colour: #B40044;

Brightness & contrast

Relative luminance0.10121WCAG 2.x, 0 is black and 1 is white

Perceived brightness101.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6.94:1

Contrast with white6.94:1WCAG normal text: AA

Contrast with black3.02:1WCAG normal text: Fail

Greyscale equivalent#2B2B2B

Inverted#4BFFBB

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#444445no red cones; affects about 1% of men; ΔE 66.1 from the original

Deuteranopia#6E6540no green cones; the most common form, about 1% of men; ΔE 66.6 from the original

Tritanopia#C60026no blue cones; rare, and affects men and women equally; ΔE 24 from the original

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

Contrast with white, large text6.94:1WCAG large text: AAA

Contrast with black, large text3.02:1WCAG large text: AA

Named colours

Brown · ΔE 20.5 Crimson · ΔE 21.4 Firebrick · ΔE 23.5 Indian red · ΔE 25.2 Maroon · ΔE 30.1 Dark red · ΔE 30.4

Nearest named CSS colourBrown (#A52A2A)ΔE 20.53, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#00B470

Analogous#B4009E, #B41600

Triadic#44B400, #0044B4

Split complementary#00B416, #009EB4

Tetradic#9EB400, #00B470, #1600B4

Tints, shades & saturation

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

Lighter +40%#FF81B1

Lighter +30%#FF4E91

Lighter +20%#FF1B71

Lighter +10%#E70057

Darker −10%#810031

Darker −20%#4E001D

Darker −30%#1B000A

Darker −40%#000000

More saturated +25%#B40044

Less saturated −25%#9E174A

Channel breakdown

R180

B68

Red180 (70.6%)

Green0 (0%)

Blue68 (26.7%)

Hue337.33°

Saturation (HSL)100%

Lightness35.29%

Dominant channelRed

Hex per channelR B4 · G 00 · B 44

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Harmonies

Lighter and darker

Similar named colours

Also reads as

B40044 (chemical formula)

Formula
432,875.64 g/mol
40044 atoms

B40044 has a molar mass of 432,875.64 g/mol, made up of 40044 atoms across 1 element: 40044 × B.

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Molar mass

Molar mass432,875.64 g/mol

Total atoms per molecule40044

Distinct elements1

Mass of one molecule7.1880691 × 10^-19 g

Molecules per gram1.3911942 × 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 × 40044)432,875.64 g/mol, 100%

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Elements in this formula

Boron

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