Recognised as Colour
#BB4130
- #BB4130
- Red
- Dark
- Nearest: Brown
#BB4130 is a red with RGB values 187, 65, 48 and HSL 7°, 59%, 46%. It is a dark colour, so white text on it reaches 5.4:1 contrast (AA for normal text). The nearest named colour is Brown.
Colour values
#BB4130#BB4130
HEX#BB4130
RGBrgb(187, 65, 48)
RGB (0–1)0.7333, 0.2549, 0.1882
RGB percentages73.3%, 25.5%, 18.8%
HSLhsl(7.3, 59.1%, 46.1%)
HSV / HSBhsv(7.3, 74.3%, 73.3%)
CMYK0%, 65.2%, 74.3%, 26.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer12,271,920
CSS custom property--colour: #BB4130;
Brightness & contrast
Relative luminance0.14559WCAG 2.x, 0 is black and 1 is white
Perceived brightness114.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.37:1
Contrast with white5.37:1WCAG normal text: AA
Contrast with black3.91:1WCAG normal text: Fail
Greyscale equivalent#5A5A5A
Inverted#44BECF
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.37:1WCAG large text: AAA
Contrast with black, large text3.91:1WCAG large text: AA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#30AABB
Analogous#BB3064, #BB8630
Triadic#30BB41, #4130BB
Split complementary#30BB86, #3065BB
Tetradic#65BB30, #30AABB, #8730BB
Tints, shades & saturation
Channel breakdown
R187
G65
B48
Red187 (73.3%)
Green65 (25.5%)
Blue48 (18.8%)
Hue7.34°
Saturation (HSL)59.15%
Lightness46.08%
Dominant channelRed
Hex per channelR BB · G 41 · B 30
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Also reads as
BB4130 (chemical formula)
- Formula
- 44,656.11 g/mol
- 4131 atoms
BB4130 has a molar mass of 44,656.11 g/mol, made up of 4131 atoms across 1 element: 4131 × B.
Molar mass
Molar mass44,656.11 g/mol
Total atoms per molecule4131
Distinct elements1
Mass of one molecule7.4153215 × 10^-20 g
Molecules per gram1.3485592 × 10^19
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 × 4131)44,656.11 g/mol, 100%
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