Recognised as Colour

#B61100

#B61100
Red
Dark
Nearest: Firebrick

#B61100 is a red with RGB values 182, 17, 0 and HSL 6°, 100%, 36%. It is a dark colour, so white text on it reaches 6.8:1 contrast (AA for normal text). The nearest named colour is Firebrick.

Colour values

#B61100#B61100

HEX#B61100

RGBrgb(182, 17, 0)

RGB (0–1)0.7137, 0.0667, 0

RGB percentages71.4%, 6.7%, 0%

HSLhsl(5.6, 100%, 35.7%)

HSV / HSBhsv(5.6, 100%, 71.4%)

CMYK0%, 90.7%, 100%, 28.6%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,931,904

CSS custom property--colour: #B61100;

Brightness & contrast

Relative luminance0.10346WCAG 2.x, 0 is black and 1 is white

Perceived brightness100.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6.84:1

Contrast with white6.84:1WCAG normal text: AA

Contrast with black3.07:1WCAG normal text: Fail

Greyscale equivalent#333333

Inverted#49EEFF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#4E4400no red cones; affects about 1% of men; ΔE 65.6 from the original

Deuteranopia#756700no green cones; the most common form, about 1% of men; ΔE 64.6 from the original

Tritanopia#C90012no blue cones; rare, and affects men and women equally; ΔE 8.2 from the original

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

Contrast with white, large text6.84:1WCAG large text: AAA

Contrast with black, large text3.07:1WCAG large text: AA

Named colours

Firebrick · ΔE 15.4 Dark red · ΔE 17.7 Maroon · ΔE 22.8 Crimson · ΔE 23.3 Brown · ΔE 24.3 Tomato · ΔE 24.6

Nearest named CSS colourFirebrick (#B22222)ΔE 15.37, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#00A5B6

Analogous#B6004A, #B66C00

Triadic#00B611, #1100B6

Split complementary#00B66C, #004AB6

Tetradic#4AB600, #00A5B6, #6C00B6

Tints, shades & saturation

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

Lighter +40%#FF8F83

Lighter +30%#FF6050

Lighter +20%#FF321D

Lighter +10%#E91600

Darker −10%#830C00

Darker −20%#500700

Darker −30%#1D0300

Darker −40%#000000

More saturated +25%#B61100

Less saturated −25%#9F2417

Channel breakdown

R182

G17

Red182 (71.4%)

Green17 (6.7%)

Blue0 (0%)

Hue5.6°

Saturation (HSL)100%

Lightness35.69%

Dominant channelRed

Hex per channelR B6 · G 11 · B 00

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Harmonies

Lighter and darker

Similar named colours

Also reads as

B61100 (chemical formula)

Formula
660,491 g/mol
61100 atoms

B61100 has a molar mass of 660,491 g/mol, made up of 61100 atoms across 1 element: 61100 × B.

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Molar mass

Molar mass660,491 g/mol

Total atoms per molecule61100

Distinct elements1

Mass of one molecule1.0967711 × 10^-18 g

Molecules per gram9.1176727 × 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 × 61100)660,491 g/mol, 100%

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Elements in this formula

Boron

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