Colour

#3F131C

#3F131C
Red
Dark
Nearest: Black

#3F131C is a red with RGB values 63, 19, 28 and HSL 348°, 54%, 16%. It is a dark colour, so white text on it reaches 15.9:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#3F131C#3F131C

HEX#3F131C

RGBrgb(63, 19, 28)

RGB (0–1)0.2471, 0.0745, 0.1098

RGB percentages24.7%, 7.5%, 11%

HSLhsl(347.7, 53.7%, 16.1%)

HSV / HSBhsv(347.7, 69.8%, 24.7%)

CMYK0%, 69.8%, 55.6%, 75.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer4,133,660

CSS custom property--colour: #3F131C;

Brightness & contrast

Relative luminance0.01606WCAG 2.x, 0 is black and 1 is white

Perceived brightness38.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 15.89:1

Contrast with white15.89:1WCAG normal text: AAA

Contrast with black1.32:1WCAG normal text: Fail

Greyscale equivalent#1D1D1D

Inverted#C0ECE3

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#1D1D1Cno red cones; affects about 1% of men; ΔE 23.2 from the original

Deuteranopia#28251Bno green cones; the most common form, about 1% of men; ΔE 23.2 from the original

Tritanopia#450D16no blue cones; rare, and affects men and women equally; ΔE 6.6 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text15.89:1WCAG large text: AAA

Contrast with black, large text1.32:1WCAG large text: Fail

Named colours

Black · ΔE 26.5 Dim grey · ΔE 38.7 Dark slate grey · ΔE 39.5 Saddle brown · ΔE 43.5 Maroon · ΔE 43.6 Sienna · ΔE 43.8

Nearest named CSS colourBlack (#000000)ΔE 26.5, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#133F36

Analogous#3F1332, #3F2013

Triadic#1C3F13, #131C3F

Split complementary#133F20, #13323F

Tetradic#323F13, #133F36, #20133F

Tints, shades & saturation

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

Lighter +40%#CB536B

Lighter +30%#B53650

Lighter +20%#8D2B3F

Lighter +10%#661F2D

Darker −10%#18070B

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#490916

Less saturated −25%#351D22

Channel breakdown

R63

G19

B28

Red63 (24.7%)

Green19 (7.5%)

Blue28 (11%)

Hue347.73°

Saturation (HSL)53.66%

Lightness16.08%

Dominant channelRed

Hex per channelR 3F · G 13 · B 1C

Keep nerding

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#3F131C

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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