Recognised as Colour

#CB2C10

#CB2C10
Red
Dark
Nearest: Firebrick

#CB2C10 is a red with RGB values 203, 44, 16 and HSL 9°, 85%, 43%. It is a dark colour, so white text on it reaches 5.4:1 contrast (AA for normal text). The nearest named colour is Firebrick.

Colour values

#CB2C10#CB2C10

HEX#CB2C10

RGBrgb(203, 44, 16)

RGB (0–1)0.7961, 0.1725, 0.0627

RGB percentages79.6%, 17.3%, 6.3%

HSLhsl(9, 85.4%, 42.9%)

HSV / HSBhsv(9, 92.1%, 79.6%)

CMYK0%, 78.3%, 92.1%, 20.4%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer13,315,088

CSS custom property--colour: #CB2C10;

Brightness & contrast

Relative luminance0.14535WCAG 2.x, 0 is black and 1 is white

Perceived brightness116.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.37:1

Contrast with white5.37:1WCAG normal text: AA

Contrast with black3.91:1WCAG normal text: Fail

Greyscale equivalent#4C4C4C

Inverted#34D3EF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#605406no red cones; affects about 1% of men; ΔE 65.1 from the original

Deuteranopia#867700no green cones; the most common form, about 1% of men; ΔE 65.5 from the original

Tritanopia#E00029no blue cones; rare, and affects men and women equally; ΔE 15.6 from the original

Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning

Contrast with white, large text5.37:1WCAG large text: AAA

Contrast with black, large text3.91:1WCAG large text: AA

Named colours

Firebrick · ΔE 16.8 Tomato · ΔE 18.5 Orange red · ΔE 21.8 Crimson · ΔE 22.2 Dark red · ΔE 22.4 Brown · ΔE 25.7

Nearest named CSS colourFirebrick (#B22222)ΔE 16.84, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#10AFCB

Analogous#CB1051, #CB8A10

Triadic#10CB2C, #2C10CB

Split complementary#10CB8A, #1051CB

Tetradic#51CB10, #10AFCB, #8A10CB

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#F9B9AE

Lighter +30%#F5917F

Lighter +20%#F16850

Lighter +10%#ED3F21

Darker −10%#9C220C

Darker −20%#6C1809

Darker −30%#3D0D05

Darker −40%#0E0301

More saturated +25%#DB2100

Less saturated −25%#B03F2B

Channel breakdown

R203

G44

B16

Red203 (79.6%)

Green44 (17.3%)

Blue16 (6.3%)

Hue8.98°

Saturation (HSL)85.39%

Lightness42.94%

Dominant channelRed

Hex per channelR CB · G 2C · B 10

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Harmonies

Lighter and darker

Similar named colours

Also reads as

CB2C10 (chemical formula)

Formula
153.741 g/mol
13 atoms

CB2C10 has a molar mass of 153.741 g/mol, made up of 13 atoms across 2 elements: 11 × C, 2 × B.

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Molar mass

Molar mass153.741 g/mol

Total atoms per molecule13

Distinct elements2

Mass of one molecule2.5529294 × 10^-22 g

Molecules per gram3.9170688 × 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

C85.9%

B14.1%

Carbon (C × 11)132.121 g/mol, 85.937%

Boron (B × 2)21.62 g/mol, 14.063%

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Elements in this formula

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