Recognised as Colour
#BB5B55
- #BB5B55
- Red
- Dark
- Nearest: Indian red
#BB5B55 is a red with RGB values 187, 91, 85 and HSL 4°, 43%, 53%. It is a dark colour, so black text on it reaches 4.7:1 contrast (AA for normal text). The nearest named colour is Indian red.
Colour values
#BB5B55#BB5B55
HEX#BB5B55
RGBrgb(187, 91, 85)
RGB (0–1)0.7333, 0.3569, 0.3333
RGB percentages73.3%, 35.7%, 33.3%
HSLhsl(3.5, 42.9%, 53.3%)
HSV / HSBhsv(3.5, 54.5%, 73.3%)
CMYK0%, 51.3%, 54.5%, 26.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer12,278,613
CSS custom property--colour: #BB5B55;
Brightness & contrast
Relative luminance0.18703WCAG 2.x, 0 is black and 1 is white
Perceived brightness127 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.74:1
Contrast with white4.43:1WCAG normal text: Fail
Contrast with black4.74:1WCAG normal text: AA
Greyscale equivalent#6F6F6F
Inverted#44A4AA
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.43:1WCAG large text: AA
Contrast with black, large text4.74:1WCAG large text: AAA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#55B5BB
Analogous#BB5582, #BB8E55
Triadic#55BB5B, #5B55BB
Split complementary#55BB8E, #5582BB
Tetradic#82BB55, #55B5BB, #8E55BB
Tints, shades & saturation
Channel breakdown
R187
G91
B85
Red187 (73.3%)
Green91 (35.7%)
Blue85 (33.3%)
Hue3.53°
Saturation (HSL)42.86%
Lightness53.33%
Dominant channelRed
Hex per channelR BB · G 5B · B 55
Keep nerding
Every link below is a page Nerdulator can generate from what it already knows about this value.
Harmonies
Similar named colours
Also reads as
BB5B55 (chemical formula)
- Formula
- 659.41 g/mol
- 61 atoms
BB5B55 has a molar mass of 659.41 g/mol, made up of 61 atoms across 1 element: 61 × B.
Molar mass
Molar mass659.41 g/mol
Total atoms per molecule61
Distinct elements1
Mass of one molecule1.0949761 × 10^-21 g
Molecules per gram9.1326197 × 10^20
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 × 61)659.41 g/mol, 100%
Keep nerding
Every link below is a page Nerdulator can generate from what it already knows about this value.
Elements in this formula
Nerdulate something else
Nothing in mind? Surprise me · today’s page