Recognised as Colour
#BB640B
- #BB640B
- Orange
- Dark
- Nearest: Chocolate
#BB640B is a orange with RGB values 187, 100, 11 and HSL 30°, 89%, 39%. It is a dark colour, so black text on it reaches 4.9:1 contrast (AA for normal text). The nearest named colour is Chocolate.
Colour values
#BB640B#BB640B
HEX#BB640B
RGBrgb(187, 100, 11)
RGB (0–1)0.7333, 0.3922, 0.0431
RGB percentages73.3%, 39.2%, 4.3%
HSLhsl(30.3, 88.9%, 38.8%)
HSV / HSBhsv(30.3, 94.1%, 73.3%)
CMYK0%, 46.5%, 94.1%, 26.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer12,280,843
CSS custom property--colour: #BB640B;
Brightness & contrast
Relative luminance0.19703WCAG 2.x, 0 is black and 1 is white
Perceived brightness127.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.94:1
Contrast with white4.25:1WCAG normal text: Fail
Contrast with black4.94:1WCAG normal text: AA
Greyscale equivalent#707070
Inverted#449BF4
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.25:1WCAG large text: AA
Contrast with black, large text4.94:1WCAG large text: AAA
Named colours
Hue familyorange
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#0B62BB
Analogous#BB0C0B, #BABB0B
Triadic#0BBB64, #640BBB
Split complementary#0BBABB, #0C0BBB
Tetradic#0BBB0C, #0B62BB, #BB0BBA
Tints, shades & saturation
Channel breakdown
R187
G100
B11
Red187 (73.3%)
Green100 (39.2%)
Blue11 (4.3%)
Hue30.34°
Saturation (HSL)88.89%
Lightness38.82%
Dominant channelRed
Hex per channelR BB · G 64 · B 0B
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Harmonies
Similar named colours
Also reads as
BB640B (chemical formula)
- Formula
- 6,940.02 g/mol
- 642 atoms
BB640B has a molar mass of 6,940.02 g/mol, made up of 642 atoms across 1 element: 642 × B.
Molar mass
Molar mass6,940.02 g/mol
Total atoms per molecule642
Distinct elements1
Mass of one molecule1.1524174 × 10^-20 g
Molecules per gram8.6774112 × 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 × 642)6,940.02 g/mol, 100%
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