Recognised as Colour

#B33000

#B33000
Orange
Dark
Nearest: Firebrick

#B33000 is a orange with RGB values 179, 48, 0 and HSL 16°, 100%, 35%. It is a dark colour, so white text on it reaches 6.3:1 contrast (AA for normal text). The nearest named colour is Firebrick.

Colour values

#B33000#B33000

HEX#B33000

RGBrgb(179, 48, 0)

RGB (0–1)0.702, 0.1882, 0

RGB percentages70.2%, 18.8%, 0%

HSLhsl(16.1, 100%, 35.1%)

HSV / HSBhsv(16.1, 100%, 70.2%)

CMYK0%, 73.2%, 100%, 29.8%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,743,232

CSS custom property--colour: #B33000;

Brightness & contrast

Relative luminance0.11698WCAG 2.x, 0 is black and 1 is white

Perceived brightness104.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6.29:1

Contrast with white6.29:1WCAG normal text: AA

Contrast with black3.34:1WCAG normal text: Fail

Greyscale equivalent#484848

Inverted#4CCFFF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#594D00no red cones; affects about 1% of men; ΔE 55.9 from the original

Deuteranopia#796B00no green cones; the most common form, about 1% of men; ΔE 55.9 from the original

Tritanopia#C60029no blue cones; rare, and affects men and women equally; ΔE 22.2 from the original

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

Contrast with white, large text6.29:1WCAG large text: AAA

Contrast with black, large text3.34:1WCAG large text: AA

Named colours

Firebrick · ΔE 16.2 Dark red · ΔE 17.2 Chocolate · ΔE 21.1 Maroon · ΔE 21.5 Brown · ΔE 22.7 Tomato · ΔE 23.5

Nearest named CSS colourFirebrick (#B22222)ΔE 16.19, a distinctly different colour

Hue familyorange

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#0083B3

Analogous#B30029, #B38A00

Triadic#00B330, #3000B3

Split complementary#00B38A, #0029B3

Tetradic#29B300, #0083B3, #8A00B3

Tints, shades & saturation

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

Lighter +40%#FFA280

Lighter +30%#FF7D4D

Lighter +20%#FF571A

Lighter +10%#E63E00

Darker −10%#802200

Darker −20%#4D1500

Darker −30%#1A0700

Darker −40%#000000

More saturated +25%#B33000

Less saturated −25%#9D3A16

Channel breakdown

R179

G48

Red179 (70.2%)

Green48 (18.8%)

Blue0 (0%)

Hue16.09°

Saturation (HSL)100%

Lightness35.1%

Dominant channelRed

Hex per channelR B3 · G 30 · B 00

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Harmonies

Lighter and darker

Similar named colours

Also reads as

B33000 (chemical formula)

Formula
356,730 g/mol
33000 atoms

B33000 has a molar mass of 356,730 g/mol, made up of 33000 atoms across 1 element: 33000 × B.

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Molar mass

Molar mass356,730 g/mol

Total atoms per molecule33000

Distinct elements1

Mass of one molecule5.923641 × 10^-19 g

Molecules per gram1.6881509 × 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 × 33000)356,730 g/mol, 100%

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Elements in this formula

Boron

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