Recognised as Colour
#BB4F4B
- #BB4F4B
- Red
- Dark
- Nearest: Indian red
#BB4F4B is a red with RGB values 187, 79, 75 and HSL 2°, 45%, 51%. It is a dark colour, so white text on it reaches 4.8:1 contrast (AA for normal text). The nearest named colour is Indian red.
Colour values
#BB4F4B#BB4F4B
HEX#BB4F4B
RGBrgb(187, 79, 75)
RGB (0–1)0.7333, 0.3098, 0.2941
RGB percentages73.3%, 31%, 29.4%
HSLhsl(2.1, 45.2%, 51.4%)
HSV / HSBhsv(2.1, 59.9%, 73.3%)
CMYK0%, 57.8%, 59.9%, 26.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer12,275,531
CSS custom property--colour: #BB4F4B;
Brightness & contrast
Relative luminance0.16665WCAG 2.x, 0 is black and 1 is white
Perceived brightness121.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 4.85:1
Contrast with white4.85:1WCAG normal text: AA
Contrast with black4.33:1WCAG normal text: Fail
Greyscale equivalent#666666
Inverted#44B0B4
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.85:1WCAG large text: AAA
Contrast with black, large text4.33:1WCAG large text: AA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#4BB7BB
Analogous#BB4B7F, #BB874B
Triadic#4BBB4F, #4F4BBB
Split complementary#4BBB87, #4B7FBB
Tetradic#7FBB4B, #4BB7BB, #874BBB
Tints, shades & saturation
Channel breakdown
R187
G79
B75
Red187 (73.3%)
Green79 (31%)
Blue75 (29.4%)
Hue2.14°
Saturation (HSL)45.16%
Lightness51.37%
Dominant channelRed
Hex per channelR BB · G 4F · B 4B
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Harmonies
Similar named colours
Also reads as
BB4F4B (chemical formula)
- Formula
- 140.852 g/mol
- 10 atoms
BB4F4B has a molar mass of 140.852 g/mol, made up of 10 atoms across 2 elements: 6 × B, 4 × F.
Molar mass
Molar mass140.852 g/mol
Total atoms per molecule10
Distinct elements2
Mass of one molecule2.3389025 × 10^-22 g
Molecules per gram4.2755096 × 10^21
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
B46%
F54%
Boron (B × 6)64.86 g/mol, 46.048%
Fluorine (F × 4)75.992 g/mol, 53.952%
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