Colour

#DF040A

#DF040A
Red
Dark
Nearest: Red

#DF040A is a red with RGB values 223, 4, 10 and HSL 358°, 96%, 45%. It is a dark colour, so white text on it reaches 5:1 contrast (AA for normal text). The nearest named colour is Red.

Colour values

#DF040A#DF040A

HEX#DF040A

RGBrgb(223, 4, 10)

RGB (0–1)0.8745, 0.0157, 0.0392

RGB percentages87.5%, 1.6%, 3.9%

HSLhsl(358.4, 96.5%, 44.5%)

HSV / HSBhsv(358.4, 98.2%, 87.5%)

CMYK0%, 98.2%, 95.5%, 12.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer14,615,562

CSS custom property--colour: #DF040A;

Brightness & contrast

Relative luminance0.15797WCAG 2.x, 0 is black and 1 is white

Perceived brightness122 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.05:1

Contrast with white5.05:1WCAG normal text: AA

Contrast with black4.16:1WCAG normal text: Fail

Greyscale equivalent#333333

Inverted#20FBF5

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#5E5301no red cones; affects about 1% of men; ΔE 78.4 from the original

Deuteranopia#8E7E00no green cones; the most common form, about 1% of men; ΔE 77.6 from the original

Tritanopia#F60010no blue cones; rare, and affects men and women equally; ΔE 8.3 from the original

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

Contrast with white, large text5.05:1WCAG large text: AAA

Contrast with black, large text4.16:1WCAG large text: AA

Named colours

Red · ΔE 13.9 Orange red · ΔE 16.1 Tomato · ΔE 24 Crimson · ΔE 24.3 Firebrick · ΔE 27 Dark red · ΔE 32.7

Nearest named CSS colourRed (#FF0000)ΔE 13.91, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#04DFD9

Analogous#DF0477, #DF6B04

Triadic#0ADF04, #040ADF

Split complementary#04DF6B, #0477DF

Tetradic#78DF04, #04DFD9, #6C04DF

Tints, shades & saturation

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

Lighter +40%#FEB1B3

Lighter +30%#FD7F83

Lighter +20%#FC4D52

Lighter +10%#FB1B21

Darker −10%#AD0308

Darker −20%#7B0206

Darker −30%#490103

Darker −40%#170001

More saturated +25%#E30006

Less saturated −25%#C32025

Channel breakdown

R223

B10

Red223 (87.5%)

Green4 (1.6%)

Blue10 (3.9%)

Hue358.36°

Saturation (HSL)96.48%

Lightness44.51%

Dominant channelRed

Hex per channelR DF · G 04 · B 0A

Keep nerding

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

#DF040A

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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