Recognised as Colour

#B20025

#B20025
Red
Dark
Nearest: Firebrick

#B20025 is a red with RGB values 178, 0, 37 and HSL 348°, 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

#B20025#B20025

HEX#B20025

RGBrgb(178, 0, 37)

RGB (0–1)0.698, 0, 0.1451

RGB percentages69.8%, 0%, 14.5%

HSLhsl(347.5, 100%, 34.9%)

HSV / HSBhsv(347.5, 100%, 69.8%)

CMYK0%, 100%, 79.2%, 30.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,665,445

CSS custom property--colour: #B20025;

Brightness & contrast

Relative luminance0.09599WCAG 2.x, 0 is black and 1 is white

Perceived brightness98.1 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#292929

Inverted#4DFFDA

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#484124no red cones; affects about 1% of men; ΔE 66.1 from the original

Deuteranopia#6F631Eno green cones; the most common form, about 1% of men; ΔE 66 from the original

Tritanopia#C50015no 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 text7.19:1WCAG large text: AAA

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

Named colours

Firebrick · ΔE 7.3 Brown · ΔE 12.6 Crimson · ΔE 13.5 Dark red · ΔE 15.9 Maroon · ΔE 18.5 Indian red · ΔE 26.3

Nearest named CSS colourFirebrick (#B22222)ΔE 7.31, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#00B28D

Analogous#B2007E, #B23400

Triadic#25B200, #0025B2

Split complementary#00B234, #007EB2

Tetradic#7EB200, #00B28D, #3400B2

Tints, shades & saturation

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

Lighter +40%#FF7F9A

Lighter +30%#FF4C71

Lighter +20%#FF1949

Lighter +10%#E50030

Darker −10%#7F001A

Darker −20%#4C0010

Darker −30%#190005

Darker −40%#000000

More saturated +25%#B20025

Less saturated −25%#9C1632

Channel breakdown

R178

B37

Red178 (69.8%)

Green0 (0%)

Blue37 (14.5%)

Hue347.53°

Saturation (HSL)100%

Lightness34.9%

Dominant channelRed

Hex per channelR B2 · G 00 · B 25

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Harmonies

Lighter and darker

Similar named colours

Also reads as

B20025 (chemical formula)

Formula
216,470.25 g/mol
20025 atoms

B20025 has a molar mass of 216,470.25 g/mol, made up of 20025 atoms across 1 element: 20025 × B.

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Molar mass

Molar mass216,470.25 g/mol

Total atoms per molecule20025

Distinct elements1

Mass of one molecule3.5945731 × 10^-19 g

Molecules per gram2.7819715 × 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 × 20025)216,470.25 g/mol, 100%

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Elements in this formula

Boron

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