Recognised as Colour

#B40026

#B40026
Red
Dark
Nearest: Firebrick

#B40026 is a red with RGB values 180, 0, 38 and HSL 347°, 100%, 35%. It is a dark colour, so white text on it reaches 7.1:1 contrast (AAA for normal text). The nearest named colour is Firebrick.

Colour values

#B40026#B40026

HEX#B40026

RGBrgb(180, 0, 38)

RGB (0–1)0.7059, 0, 0.149

RGB percentages70.6%, 0%, 14.9%

HSLhsl(347.3, 100%, 35.3%)

HSV / HSBhsv(347.3, 100%, 70.6%)

CMYK0%, 100%, 78.9%, 29.4%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,796,518

CSS custom property--colour: #B40026;

Brightness & contrast

Relative luminance0.09843WCAG 2.x, 0 is black and 1 is white

Perceived brightness99.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 7.07:1

Contrast with white7.07:1WCAG normal text: AAA

Contrast with black2.97:1WCAG normal text: Fail

Greyscale equivalent#292929

Inverted#4BFFD9

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#484225no red cones; affects about 1% of men; ΔE 67.2 from the original

Deuteranopia#70641Fno green cones; the most common form, about 1% of men; ΔE 66.6 from the original

Tritanopia#C70016no blue cones; rare, and affects men and women equally; ΔE 15 from the original

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

Contrast with white, large text7.07:1WCAG large text: AAA

Contrast with black, large text2.97:1WCAG large text: Fail

Named colours

Firebrick · ΔE 7.6 Crimson · ΔE 12.8 Brown · ΔE 13.1 Dark red · ΔE 16.6 Maroon · ΔE 19.2 Indian red · ΔE 26.4

Nearest named CSS colourFirebrick (#B22222)ΔE 7.64, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#00B48E

Analogous#B40080, #B43400

Triadic#26B400, #0026B4

Split complementary#00B434, #0080B4

Tetradic#80B400, #00B48E, #3400B4

Tints, shades & saturation

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

Lighter +40%#FF819C

Lighter +30%#FF4E73

Lighter +20%#FF1B4B

Lighter +10%#E70031

Darker −10%#81001B

Darker −20%#4E0010

Darker −30%#1B0006

Darker −40%#000000

More saturated +25%#B40026

Less saturated −25%#9E1733

Channel breakdown

R180

B38

Red180 (70.6%)

Green0 (0%)

Blue38 (14.9%)

Hue347.33°

Saturation (HSL)100%

Lightness35.29%

Dominant channelRed

Hex per channelR B4 · G 00 · B 26

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Harmonies

Lighter and darker

Similar named colours

Also reads as

B40026 (chemical formula)

Formula
432,681.06 g/mol
40026 atoms

B40026 has a molar mass of 432,681.06 g/mol, made up of 40026 atoms across 1 element: 40026 × B.

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Molar mass

Molar mass432,681.06 g/mol

Total atoms per molecule40026

Distinct elements1

Mass of one molecule7.184838 × 10^-19 g

Molecules per gram1.3918198 × 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 × 40026)432,681.06 g/mol, 100%

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Elements in this formula

Boron

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