Recognised as Colour

#CB4B48

#CB4B48
Red
Dark
Nearest: Indian red

#CB4B48 is a red with RGB values 203, 75, 72 and HSL 1°, 56%, 54%. It is a dark colour, so black text on it reaches 4.6:1 contrast (AA for normal text). The nearest named colour is Indian red.

Colour values

#CB4B48#CB4B48

HEX#CB4B48

RGBrgb(203, 75, 72)

RGB (0–1)0.7961, 0.2941, 0.2824

RGB percentages79.6%, 29.4%, 28.2%

HSLhsl(1.4, 55.7%, 53.9%)

HSV / HSBhsv(1.4, 64.5%, 79.6%)

CMYK0%, 63.1%, 64.5%, 20.4%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer13,323,080

CSS custom property--colour: #CB4B48;

Brightness & contrast

Relative luminance0.18197WCAG 2.x, 0 is black and 1 is white

Perceived brightness127.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 4.64:1

Contrast with white4.53:1WCAG normal text: AA

Contrast with black4.64:1WCAG normal text: AA

Greyscale equivalent#666666

Inverted#34B4B7

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6D6547no red cones; affects about 1% of men; ΔE 54 from the original

Deuteranopia#8D8045no green cones; the most common form, about 1% of men; ΔE 54.3 from the original

Tritanopia#DE2F4Bno blue cones; rare, and affects men and women equally; ΔE 16.1 from the original

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

Contrast with white, large text4.53:1WCAG large text: AAA

Contrast with black, large text4.64:1WCAG large text: AAA

Named colours

Indian red · ΔE 9.7 Brown · ΔE 12.3 Firebrick · ΔE 14.7 Salmon · ΔE 18.3 Light coral · ΔE 20.5 Crimson · ΔE 21

Nearest named CSS colourIndian red (#CD5C5C)ΔE 9.73, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#48C8CB

Analogous#CB4886, #CB8D48

Triadic#48CB4B, #4B48CB

Split complementary#48CB8C, #4887CB

Tetradic#86CB48, #48C8CB, #8D48CB

Tints, shades & saturation

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

Lighter +40%#F8E7E7

Lighter +30%#EDC0BF

Lighter +20%#E29997

Lighter +10%#D67270

Darker −10%#AE3432

Darker −20%#872826

Darker −30%#5F1D1B

Darker −40%#371110

More saturated +25%#E82F2B

Less saturated −25%#AE6765

Channel breakdown

R203

G75

B72

Red203 (79.6%)

Green75 (29.4%)

Blue72 (28.2%)

Hue1.37°

Saturation (HSL)55.74%

Lightness53.92%

Dominant channelRed

Hex per channelR CB · G 4B · B 48

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Harmonies

Lighter and darker

Similar named colours

Also reads as

CB4B48 (chemical formula)

Formula
574.131 g/mol
53 atoms

CB4B48 has a molar mass of 574.131 g/mol, made up of 53 atoms across 2 elements: 1 × C, 52 × B.

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Molar mass

Molar mass574.131 g/mol

Total atoms per molecule53

Distinct elements2

Mass of one molecule9.5336696 × 10^-22 g

Molecules per gram1.0489141 × 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

C2.1%

B97.9%

Carbon (C)12.011 g/mol, 2.092%

Boron (B × 52)562.12 g/mol, 97.908%

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Elements in this formula

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