Recognised as Colour
#BB1228
- #BB1228
- Red
- Dark
- Nearest: Firebrick
#BB1228 is a red with RGB values 187, 18, 40 and HSL 352°, 82%, 40%. It is a dark colour, so white text on it reaches 6.5:1 contrast (AA for normal text). The nearest named colour is Firebrick.
Colour values
#BB1228#BB1228
HEX#BB1228
RGBrgb(187, 18, 40)
RGB (0–1)0.7333, 0.0706, 0.1569
RGB percentages73.3%, 7.1%, 15.7%
HSLhsl(352.2, 82.4%, 40.2%)
HSV / HSBhsv(352.2, 90.4%, 73.3%)
CMYK0%, 90.4%, 78.6%, 26.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer12,259,880
CSS custom property--colour: #BB1228;
Brightness & contrast
Relative luminance0.11151WCAG 2.x, 0 is black and 1 is white
Perceived brightness104.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.5:1
Contrast with white6.5:1WCAG normal text: AA
Contrast with black3.23:1WCAG normal text: Fail
Greyscale equivalent#383838
Inverted#44EDD7
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.5:1WCAG large text: AAA
Contrast with black, large text3.23:1WCAG large text: AA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#12BBA5
Analogous#BB127D, #BB5112
Triadic#28BB12, #1228BB
Split complementary#12BB51, #127CBB
Tetradic#7CBB12, #12BBA5, #5012BB
Tints, shades & saturation
Channel breakdown
R187
G18
B40
Red187 (73.3%)
Green18 (7.1%)
Blue40 (15.7%)
Hue352.19°
Saturation (HSL)82.44%
Lightness40.2%
Dominant channelRed
Hex per channelR BB · G 12 · B 28
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Also reads as
BB1228 (chemical formula)
- Formula
- 13,285.49 g/mol
- 1229 atoms
BB1228 has a molar mass of 13,285.49 g/mol, made up of 1229 atoms across 1 element: 1229 × B.
Molar mass
Molar mass13,285.49 g/mol
Total atoms per molecule1229
Distinct elements1
Mass of one molecule2.2061075 × 10^-20 g
Molecules per gram4.5328706 × 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 × 1229)13,285.49 g/mol, 100%
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