Recognised as Colour
#BB2306
- #BB2306
- Red
- Dark
- Nearest: Firebrick
#BB2306 is a red with RGB values 187, 35, 6 and HSL 10°, 94%, 38%. 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
#BB2306#BB2306
HEX#BB2306
RGBrgb(187, 35, 6)
RGB (0–1)0.7333, 0.1373, 0.0235
RGB percentages73.3%, 13.7%, 2.4%
HSLhsl(9.6, 93.8%, 37.8%)
HSV / HSBhsv(9.6, 96.8%, 73.3%)
CMYK0%, 81.3%, 96.8%, 26.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer12,264,198
CSS custom property--colour: #BB2306;
Brightness & contrast
Relative luminance0.1178WCAG 2.x, 0 is black and 1 is white
Perceived brightness105.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.26:1
Contrast with white6.26:1WCAG normal text: AA
Contrast with black3.36:1WCAG normal text: Fail
Greyscale equivalent#414141
Inverted#44DCF9
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.26:1WCAG large text: AAA
Contrast with black, large text3.36:1WCAG large text: AA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#069EBB
Analogous#BB0643, #BB7E06
Triadic#06BB23, #2306BB
Split complementary#06BB7D, #0644BB
Tetradic#43BB06, #069EBB, #7E06BB
Tints, shades & saturation
Channel breakdown
R187
G35
B6
Red187 (73.3%)
Green35 (13.7%)
Blue6 (2.4%)
Hue9.61°
Saturation (HSL)93.78%
Lightness37.84%
Dominant channelRed
Hex per channelR BB · G 23 · B 06
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Also reads as
BB2306 (chemical formula)
- Formula
- 24,938.67 g/mol
- 2307 atoms
BB2306 has a molar mass of 24,938.67 g/mol, made up of 2307 atoms across 1 element: 2307 × B.
Molar mass
Molar mass24,938.67 g/mol
Total atoms per molecule2307
Distinct elements1
Mass of one molecule4.1411636 × 10^-20 g
Molecules per gram2.4147802 × 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 × 2307)24,938.67 g/mol, 100%
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