Recognised as Colour

#B70004

#B70004
Red
Dark
Nearest: Firebrick

#B70004 is a red with RGB values 183, 0, 4 and HSL 359°, 100%, 36%. It is a dark colour, so white text on it reaches 7:1 contrast (AA for normal text). The nearest named colour is Firebrick.

Colour values

#B70004#B70004

HEX#B70004

RGBrgb(183, 0, 4)

RGB (0–1)0.7176, 0, 0.0157

RGB percentages71.8%, 0%, 1.6%

HSLhsl(358.7, 100%, 35.9%)

HSV / HSBhsv(358.7, 100%, 71.8%)

CMYK0%, 100%, 97.8%, 28.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,993,092

CSS custom property--colour: #B70004;

Brightness & contrast

Relative luminance0.10076WCAG 2.x, 0 is black and 1 is white

Perceived brightness100.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6.96:1

Contrast with white6.96:1WCAG normal text: AA

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

Greyscale equivalent#272727

Inverted#48FFFB

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#4C4200no red cones; affects about 1% of men; ΔE 67.6 from the original

Deuteranopia#746600no green cones; the most common form, about 1% of men; ΔE 66.8 from the original

Tritanopia#CB0009no blue cones; rare, and affects men and women equally; ΔE 7.2 from the original

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

Contrast with white, large text6.96:1WCAG large text: AAA

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

Named colours

Firebrick · ΔE 14.7 Dark red · ΔE 17.9 Crimson · ΔE 21.2 Maroon · ΔE 22.9 Brown · ΔE 23.9 Tomato · ΔE 25

Nearest named CSS colourFirebrick (#B22222)ΔE 14.71, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#00B7B3

Analogous#B7005F, #B75700

Triadic#04B700, #0004B7

Split complementary#00B758, #005FB7

Tetradic#60B700, #00B7B3, #5800B7

Tints, shades & saturation

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

Lighter +40%#FF8487

Lighter +30%#FF5155

Lighter +20%#FF1E23

Lighter +10%#EA0005

Darker −10%#840003

Darker −20%#510002

Darker −30%#1E0001

Darker −40%#000000

More saturated +25%#B70004

Less saturated −25%#A0171A

Channel breakdown

R183

Red183 (71.8%)

Green0 (0%)

Blue4 (1.6%)

Hue358.69°

Saturation (HSL)100%

Lightness35.88%

Dominant channelRed

Hex per channelR B7 · G 00 · B 04

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Harmonies

Lighter and darker

Similar named colours

Also reads as

B70004 (chemical formula)

Formula
756,743.24 g/mol
70004 atoms

B70004 has a molar mass of 756,743.24 g/mol, made up of 70004 atoms across 1 element: 70004 × B.

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Molar mass

Molar mass756,743.24 g/mol

Total atoms per molecule70004

Distinct elements1

Mass of one molecule1.2566017 × 10^-18 g

Molecules per gram7.957971 × 10^17

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 × 70004)756,743.24 g/mol, 100%

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Elements in this formula

Boron

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