Recognised as Colour

#B30008

#B30008
Red
Dark
Nearest: Firebrick

#B30008 is a red with RGB values 179, 0, 8 and HSL 357°, 100%, 35%. It is a dark colour, so white text on it reaches 7.2:1 contrast (AAA for normal text). The nearest named colour is Firebrick.

Colour values

#B30008#B30008

HEX#B30008

RGBrgb(179, 0, 8)

RGB (0–1)0.702, 0, 0.0314

RGB percentages70.2%, 0%, 3.1%

HSLhsl(357.3, 100%, 35.1%)

HSV / HSBhsv(357.3, 100%, 70.2%)

CMYK0%, 100%, 95.5%, 29.8%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,730,952

CSS custom property--colour: #B30008;

Brightness & contrast

Relative luminance0.09601WCAG 2.x, 0 is black and 1 is white

Perceived brightness97.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 7.19:1

Contrast with white7.19:1WCAG normal text: AAA

Contrast with black2.92:1WCAG normal text: Fail

Greyscale equivalent#272727

Inverted#4CFFF7

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#4A4003no red cones; affects about 1% of men; ΔE 66.3 from the original

Deuteranopia#716400no green cones; the most common form, about 1% of men; ΔE 66.2 from the original

Tritanopia#C60009no blue cones; rare, and affects men and women equally; ΔE 7.5 from the original

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

Contrast with white, large text7.19:1WCAG large text: AAA

Contrast with black, large text2.92:1WCAG large text: Fail

Named colours

Firebrick · ΔE 12.2 Dark red · ΔE 15.5 Crimson · ΔE 20.1 Maroon · ΔE 20.5 Brown · ΔE 21.4 Tomato · ΔE 25.4

Nearest named CSS colourFirebrick (#B22222)ΔE 12.21, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#00B3AB

Analogous#B30061, #B35100

Triadic#08B300, #0008B3

Split complementary#00B351, #0061B3

Tetradic#62B300, #00B3AB, #5200B3

Tints, shades & saturation

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

Lighter +40%#FF8086

Lighter +30%#FF4D55

Lighter +20%#FF1A24

Lighter +10%#E6000A

Darker −10%#800006

Darker −20%#4D0003

Darker −30%#1A0001

Darker −40%#000000

More saturated +25%#B30008

Less saturated −25%#9D161C

Channel breakdown

R179

Red179 (70.2%)

Green0 (0%)

Blue8 (3.1%)

Hue357.32°

Saturation (HSL)100%

Lightness35.1%

Dominant channelRed

Hex per channelR B3 · G 00 · B 08

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Harmonies

Lighter and darker

Similar named colours

Also reads as

B30008 (chemical formula)

Formula
324,386.48 g/mol
30008 atoms

B30008 has a molar mass of 324,386.48 g/mol, made up of 30008 atoms across 1 element: 30008 × B.

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Molar mass

Molar mass324,386.48 g/mol

Total atoms per molecule30008

Distinct elements1

Mass of one molecule5.3865642 × 10^-19 g

Molecules per gram1.8564709 × 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 × 30008)324,386.48 g/mol, 100%

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Elements in this formula

Boron

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