Recognised as Colour

#CA1501

#CA1501
Red
Dark
Nearest: Orange red

#CA1501 is a red with RGB values 202, 21, 1 and HSL 6°, 99%, 40%. It is a dark colour, so white text on it reaches 5.8:1 contrast (AA for normal text). The nearest named colour is Orange red.

Colour values

#CA1501#CA1501

HEX#CA1501

RGBrgb(202, 21, 1)

RGB (0–1)0.7922, 0.0824, 0.0039

RGB percentages79.2%, 8.2%, 0.4%

HSLhsl(6, 99%, 39.8%)

HSV / HSBhsv(6, 99.5%, 79.2%)

CMYK0%, 89.6%, 99.5%, 20.8%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer13,243,649

CSS custom property--colour: #CA1501;

Brightness & contrast

Relative luminance0.13095WCAG 2.x, 0 is black and 1 is white

Perceived brightness111.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.8:1

Contrast with white5.8:1WCAG normal text: AA

Contrast with black3.62:1WCAG normal text: Fail

Greyscale equivalent#3A3A3A

Inverted#35EAFE

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#584D00no red cones; affects about 1% of men; ΔE 70.7 from the original

Deuteranopia#827300no green cones; the most common form, about 1% of men; ΔE 69.9 from the original

Tritanopia#DF0016no blue cones; rare, and affects men and women equally; ΔE 9 from the original

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

Contrast with white, large text5.8:1WCAG large text: AAA

Contrast with black, large text3.62:1WCAG large text: AA

Named colours

Orange red · ΔE 19.6 Firebrick · ΔE 21.1 Red · ΔE 21.4 Tomato · ΔE 22.8 Crimson · ΔE 23.9 Dark red · ΔE 25.3

Nearest named CSS colourOrange red (#FF4500)ΔE 19.57, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#01B6CA

Analogous#CA0152, #CA7A01

Triadic#01CA15, #1501CA

Split complementary#01CA79, #0152CA

Tetradic#52CA01, #01B6CA, #7901CA

Tints, shades & saturation

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

Lighter +40%#FEA399

Lighter +30%#FE7566

Lighter +20%#FE4733

Lighter +10%#FD1A01

Darker −10%#971001

Darker −20%#650A00

Darker −30%#320500

Darker −40%#000000

More saturated +25%#CB1400

Less saturated −25%#B1291A

Channel breakdown

R202

G21

Red202 (79.2%)

Green21 (8.2%)

Blue1 (0.4%)

Hue5.97°

Saturation (HSL)99.01%

Lightness39.8%

Dominant channelRed

Hex per channelR CA · G 15 · B 01

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Harmonies

Lighter and darker

Similar named colours

Also reads as

Ca1501 (chemical formula)

Formula
60,157.078 g/mol
1501 atoms

Ca1501 has a molar mass of 60,157.078 g/mol, made up of 1501 atoms across 1 element: 1501 × Ca.

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Molar mass

Molar mass60,157.078 g/mol

Total atoms per molecule1501

Distinct elements1

Mass of one molecule9.9893178 × 10^-20 g

Molecules per gram1.0010694 × 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

Ca100%

Calcium (Ca × 1501)60,157.078 g/mol, 100%

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Elements in this formula

Calcium

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