Recognised as Colour
#C55B78
- #C55B78
- Red
- Dark
- Nearest: Pale violetred
#C55B78 is a red with RGB values 197, 91, 120 and HSL 344°, 48%, 56%. It is a dark colour, so black text on it reaches 5.1:1 contrast (AA for normal text). The nearest named colour is Pale violetred.
Colour values
#C55B78#C55B78
HEX#C55B78
RGBrgb(197, 91, 120)
RGB (0–1)0.7725, 0.3569, 0.4706
RGB percentages77.3%, 35.7%, 47.1%
HSLhsl(343.6, 47.7%, 56.5%)
HSV / HSBhsv(343.6, 53.8%, 77.3%)
CMYK0%, 53.8%, 39.1%, 22.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer12,934,008
CSS custom property--colour: #C55B78;
Brightness & contrast
Relative luminance0.20709WCAG 2.x, 0 is black and 1 is white
Perceived brightness134.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.14:1
Contrast with white4.08:1WCAG normal text: Fail
Contrast with black5.14:1WCAG normal text: AA
Greyscale equivalent#747474
Inverted#3AA487
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.08:1WCAG large text: AA
Contrast with black, large text5.14:1WCAG large text: AAA
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#5BC5A8
Analogous#C55BAD, #C5735B
Triadic#78C55B, #5B78C5
Split complementary#5BC573, #5BADC5
Tetradic#ADC55B, #5BC5A8, #735BC5
Tints, shades & saturation
Channel breakdown
R197
G91
B120
Red197 (77.3%)
Green91 (35.7%)
Blue120 (47.1%)
Hue343.58°
Saturation (HSL)47.75%
Lightness56.47%
Dominant channelRed
Hex per channelR C5 · G 5B · B 78
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Harmonies
Similar named colours
Also reads as
C55B78 (chemical formula)
- Formula
- 1,503.785 g/mol
- 133 atoms
C55B78 has a molar mass of 1,503.785 g/mol, made up of 133 atoms across 2 elements: 55 × C, 78 × B.
Molar mass
Molar mass1,503.785 g/mol
Total atoms per molecule133
Distinct elements2
Mass of one molecule2.4970937 × 10^-21 g
Molecules per gram4.0046554 × 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
C43.9%
B56.1%
Carbon (C × 55)660.605 g/mol, 43.929%
Boron (B × 78)843.18 g/mol, 56.071%
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