Recognised as Colour
#CB5038
- #CB5038
- Red
- Dark
- Nearest: Firebrick
#CB5038 is a red with RGB values 203, 80, 56 and HSL 10°, 59%, 51%. It is a dark colour, so black text on it reaches 4.7:1 contrast (AA for normal text). The nearest named colour is Firebrick.
Colour values
#CB5038#CB5038
HEX#CB5038
RGBrgb(203, 80, 56)
RGB (0–1)0.7961, 0.3137, 0.2196
RGB percentages79.6%, 31.4%, 22%
HSLhsl(9.8, 58.6%, 50.8%)
HSV / HSBhsv(9.8, 72.4%, 79.6%)
CMYK0%, 60.6%, 72.4%, 20.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer13,324,344
CSS custom property--colour: #CB5038;
Brightness & contrast
Relative luminance0.18719WCAG 2.x, 0 is black and 1 is white
Perceived brightness128.2 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#686868
Inverted#34AFC7
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#38B3CB
Analogous#CB3869, #CB9938
Triadic#38CB50, #5038CB
Split complementary#38CB9A, #3869CB
Tetradic#6ACB38, #38B3CB, #9A38CB
Tints, shades & saturation
Channel breakdown
R203
G80
B56
Red203 (79.6%)
Green80 (31.4%)
Blue56 (22%)
Hue9.8°
Saturation (HSL)58.57%
Lightness50.78%
Dominant channelRed
Hex per channelR CB · G 50 · B 38
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Also reads as
CB5038 (chemical formula)
- Formula
- 54,472.791 g/mol
- 5039 atoms
CB5038 has a molar mass of 54,472.791 g/mol, made up of 5039 atoms across 2 elements: 1 × C, 5038 × B.
Molar mass
Molar mass54,472.791 g/mol
Total atoms per molecule5039
Distinct elements2
Mass of one molecule9.0454198 × 10^-20 g
Molecules per gram1.1055319 × 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
C0%
B100%
Carbon (C)12.011 g/mol, 0.022%
Boron (B × 5038)54,460.78 g/mol, 99.978%
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