Recognised as Colour

#C40B00

#C40B00
Red
Dark
Nearest: Firebrick

#C40B00 is a red with RGB values 196, 11, 0 and HSL 3°, 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 Firebrick.

Colour values

#C40B00#C40B00

HEX#C40B00

RGBrgb(196, 11, 0)

RGB (0–1)0.7686, 0.0431, 0

RGB percentages76.9%, 4.3%, 0%

HSLhsl(3.4, 100%, 38.4%)

HSV / HSBhsv(3.4, 100%, 76.9%)

CMYK0%, 94.4%, 100%, 23.1%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer12,847,872

CSS custom property--colour: #C40B00;

Brightness & contrast

Relative luminance0.11975WCAG 2.x, 0 is black and 1 is white

Perceived brightness107.5 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6.19:1

Contrast with white6.19:1WCAG normal text: AA

Contrast with black3.4:1WCAG normal text: Fail

Greyscale equivalent#323232

Inverted#3BF4FF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#544900no red cones; affects about 1% of men; ΔE 70.2 from the original

Deuteranopia#7D6E00no green cones; the most common form, about 1% of men; ΔE 69.2 from the original

Tritanopia#D9000Fno blue cones; rare, and affects men and women equally; ΔE 7.7 from the original

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

Contrast with white, large text6.19:1WCAG large text: AAA

Contrast with black, large text3.4:1WCAG large text: AA

Named colours

Firebrick · ΔE 19.7 Orange red · ΔE 21.6 Red · ΔE 23 Crimson · ΔE 23.3 Dark red · ΔE 23.5 Tomato · ΔE 23.8

Nearest named CSS colourFirebrick (#B22222)ΔE 19.74, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#00B9C4

Analogous#C40057, #C46D00

Triadic#00C40B, #0B00C4

Split complementary#00C46D, #0057C4

Tetradic#57C400, #00B9C4, #6D00C4

Tints, shades & saturation

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

Lighter +40%#FF9791

Lighter +30%#FF675E

Lighter +20%#FF372B

Lighter +10%#F70E00

Darker −10%#910800

Darker −20%#5E0500

Darker −30%#2B0200

Darker −40%#000000

More saturated +25%#C40B00

Less saturated −25%#AC2118

Channel breakdown

R196

G11

Red196 (76.9%)

Green11 (4.3%)

Blue0 (0%)

Hue3.37°

Saturation (HSL)100%

Lightness38.43%

Dominant channelRed

Hex per channelR C4 · G 0B · B 00

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

#C40B00

Colour values

Brightness & contrast

Colour vision & accessibility

Named colours

Colour harmonies

Tints, shades & saturation

Channel breakdown

Keep nerding

Harmonies

Lighter and darker

Similar named colours

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