Recognised as Colour

#C1004B

#C1004B
Red
Dark
Nearest: Crimson

#C1004B is a red with RGB values 193, 0, 75 and HSL 337°, 100%, 38%. It is a dark colour, so white text on it reaches 6.2:1 contrast (AA for normal text). The nearest named colour is Crimson.

Colour values

#C1004B#C1004B

HEX#C1004B

RGBrgb(193, 0, 75)

RGB (0–1)0.7569, 0, 0.2941

RGB percentages75.7%, 0%, 29.4%

HSLhsl(336.7, 100%, 37.8%)

HSV / HSBhsv(336.7, 100%, 75.7%)

CMYK0%, 100%, 61.1%, 24.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer12,648,523

CSS custom property--colour: #C1004B;

Brightness & contrast

Relative luminance0.11845WCAG 2.x, 0 is black and 1 is white

Perceived brightness108.5 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6.23:1

Contrast with white6.23:1WCAG normal text: AA

Contrast with black3.37:1WCAG normal text: Fail

Greyscale equivalent#2E2E2E

Inverted#3EFFB4

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#494A4Cno red cones; affects about 1% of men; ΔE 69.9 from the original

Deuteranopia#766D46no green cones; the most common form, about 1% of men; ΔE 70.5 from the original

Tritanopia#D4002Bno blue cones; rare, and affects men and women equally; ΔE 25.3 from the original

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

Contrast with white, large text6.23:1WCAG large text: AAA

Contrast with black, large text3.37:1WCAG large text: AA

Named colours

Crimson · ΔE 19.5 Brown · ΔE 23.4 Firebrick · ΔE 25 Indian red · ΔE 26.4 Medium violet red · ΔE 31.1 Deep pink · ΔE 31.2

Nearest named CSS colourCrimson (#DC143C)ΔE 19.48, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#00C176

Analogous#C100AC, #C11500

Triadic#4BC100, #004BC1

Split complementary#00C115, #00ACC1

Tetradic#ACC100, #00C176, #1500C1

Tints, shades & saturation

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

Lighter +40%#FF8EBA

Lighter +30%#FF5B9B

Lighter +20%#FF287C

Lighter +10%#F4005F

Darker −10%#8E0037

Darker −20%#5B0023

Darker −30%#280010

Darker −40%#000000

More saturated +25%#C1004B

Less saturated −25%#A91850

Channel breakdown

R193

B75

Red193 (75.7%)

Green0 (0%)

Blue75 (29.4%)

Hue336.68°

Saturation (HSL)100%

Lightness37.84%

Dominant channelRed

Hex per channelR C1 · G 00 · B 4B

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Harmonies

Lighter and darker

Similar named colours

Also reads as

C1004B (chemical formula)

Formula
12,069.854 g/mol
1005 atoms

C1004B has a molar mass of 12,069.854 g/mol, made up of 1005 atoms across 2 elements: 1004 × C, 1 × B.

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Molar mass

Molar mass12,069.854 g/mol

Total atoms per molecule1005

Distinct elements2

Mass of one molecule2.0042464 × 10^-20 g

Molecules per gram4.9894065 × 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

C99.9%

B0.1%

Carbon (C × 1004)12,059.044 g/mol, 99.91%

Boron (B)10.81 g/mol, 0.09%

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