Recognised as Colour

#C63404

#C63404
Red
Dark
Nearest: Firebrick

#C63404 is a red with RGB values 198, 52, 4 and HSL 15°, 96%, 40%. 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

#C63404#C63404

HEX#C63404

RGBrgb(198, 52, 4)

RGB (0–1)0.7765, 0.2039, 0.0157

RGB percentages77.6%, 20.4%, 1.6%

HSLhsl(14.8, 96%, 39.6%)

HSV / HSBhsv(14.8, 98%, 77.6%)

CMYK0%, 73.7%, 98%, 22.4%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer12,989,444

CSS custom property--colour: #C63404;

Brightness & contrast

Relative luminance0.14471WCAG 2.x, 0 is black and 1 is white

Perceived brightness115.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.39:1

Contrast with white5.39:1WCAG normal text: AA

Contrast with black3.89:1WCAG normal text: Fail

Greyscale equivalent#505050

Inverted#39CBFB

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#625500no red cones; affects about 1% of men; ΔE 60.8 from the original

Deuteranopia#867600no green cones; the most common form, about 1% of men; ΔE 60.6 from the original

Tritanopia#DB002Eno blue cones; rare, and affects men and women equally; ΔE 22.3 from the original

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

Contrast with white, large text5.39:1WCAG large text: AAA

Contrast with black, large text3.89:1WCAG large text: AA

Named colours

Firebrick · ΔE 19.1 Tomato · ΔE 19.8 Orange red · ΔE 21.8 Chocolate · ΔE 21.9 Dark red · ΔE 22.8 Coral · ΔE 26.1

Nearest named CSS colourFirebrick (#B22222)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#0496C6

Analogous#C60435, #C69504

Triadic#04C634, #3404C6

Split complementary#04C695, #0435C6

Tetradic#35C604, #0496C6, #9504C6

Tints, shades & saturation

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

Lighter +40%#FDB299

Lighter +30%#FC8C67

Lighter +20%#FB6635

Lighter +10%#F84105

Darker −10%#942703

Darker −20%#621A02

Darker −30%#300D01

Darker −40%#000000

More saturated +25%#CA3200

Less saturated −25%#AD411D

Channel breakdown

R198

G52

Red198 (77.6%)

Green52 (20.4%)

Blue4 (1.6%)

Hue14.85°

Saturation (HSL)96.04%

Lightness39.61%

Dominant channelRed

Hex per channelR C6 · G 34 · B 04

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Harmonies

Lighter and darker

Similar named colours

Also reads as

C63404 (chemical formula)

Formula
761,545.444 g/mol
63404 atoms

C63404 has a molar mass of 761,545.444 g/mol, made up of 63404 atoms across 1 element: 63404 × C.

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Molar mass

Molar mass761,545.444 g/mol

Total atoms per molecule63404

Distinct elements1

Mass of one molecule1.264576 × 10^-18 g

Molecules per gram7.9077891 × 10^17

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

C100%

Carbon (C × 63404)761,545.444 g/mol, 100%

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Elements in this formula

Carbon

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