Recognised as Colour

#CB2102

#CB2102
Red
Dark
Nearest: Orange red

#CB2102 is a red with RGB values 203, 33, 2 and HSL 9°, 98%, 40%. It is a dark colour, so white text on it reaches 5.6:1 contrast (AA for normal text). The nearest named colour is Orange red.

Colour values

#CB2102#CB2102

HEX#CB2102

RGBrgb(203, 33, 2)

RGB (0–1)0.7961, 0.1294, 0.0078

RGB percentages79.6%, 12.9%, 0.8%

HSLhsl(9.3, 98%, 40.2%)

HSV / HSBhsv(9.3, 99%, 79.6%)

CMYK0%, 83.7%, 99%, 20.4%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer13,312,258

CSS custom property--colour: #CB2102;

Brightness & contrast

Relative luminance0.13789WCAG 2.x, 0 is black and 1 is white

Perceived brightness113.8 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.59:1

Contrast with white5.59:1WCAG normal text: AA

Contrast with black3.76:1WCAG normal text: Fail

Greyscale equivalent#434343

Inverted#34DEFD

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#5C5000no red cones; affects about 1% of men; ΔE 68.3 from the original

Deuteranopia#847500no green cones; the most common form, about 1% of men; ΔE 68 from the original

Tritanopia#E0001Fno blue cones; rare, and affects men and women equally; ΔE 12.5 from the original

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

Contrast with white, large text5.59:1WCAG large text: AAA

Contrast with black, large text3.76:1WCAG large text: AA

Named colours

Orange red · ΔE 19.1 Firebrick · ΔE 20.7 Tomato · ΔE 21.5 Red · ΔE 22.3 Crimson · ΔE 24.5 Dark red · ΔE 25

Nearest named CSS colourOrange red (#FF4500)ΔE 19.1, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#02ACCB

Analogous#CB0247, #CB8502

Triadic#02CB21, #2102CB

Split complementary#02CB85, #0248CB

Tetradic#48CB02, #02ACCB, #8602CB

Tints, shades & saturation

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

Lighter +40%#FEAA9B

Lighter +30%#FE7F68

Lighter +20%#FD5536

Lighter +10%#FD2A03

Darker −10%#981902

Darker −20%#661101

Darker −30%#330801

Darker −40%#010000

More saturated +25%#CD2000

Less saturated −25%#B1331C

Channel breakdown

R203

G33

Red203 (79.6%)

Green33 (12.9%)

Blue2 (0.8%)

Hue9.25°

Saturation (HSL)98.05%

Lightness40.2%

Dominant channelRed

Hex per channelR CB · G 21 · B 02

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Harmonies

Lighter and darker

Similar named colours

Also reads as

CB2102 (chemical formula)

Formula
22,734.631 g/mol
2103 atoms

CB2102 has a molar mass of 22,734.631 g/mol, made up of 2103 atoms across 2 elements: 1 × C, 2102 × B.

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Molar mass

Molar mass22,734.631 g/mol

Total atoms per molecule2103

Distinct elements2

Mass of one molecule3.7751743 × 10^-20 g

Molecules per gram2.6488843 × 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

C0.1%

B99.9%

Carbon (C)12.011 g/mol, 0.053%

Boron (B × 2102)22,722.62 g/mol, 99.947%

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