Recognised as Colour

#400B17

#400B17
Red
Dark
Nearest: Black

#400B17 is a red with RGB values 64, 11, 23 and HSL 346°, 71%, 15%. It is a dark colour, so white text on it reaches 16.4:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#400B17#400B17

HEX#400B17

RGBrgb(64, 11, 23)

RGB (0–1)0.251, 0.0431, 0.0902

RGB percentages25.1%, 4.3%, 9%

HSLhsl(346.4, 70.7%, 14.7%)

HSV / HSBhsv(346.4, 82.8%, 25.1%)

CMYK0%, 82.8%, 64.1%, 74.9%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer4,197,143

CSS custom property--colour: #400B17;

Brightness & contrast

Relative luminance0.01391WCAG 2.x, 0 is black and 1 is white

Perceived brightness36.8 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 16.43:1

Contrast with white16.43:1WCAG normal text: AAA

Contrast with black1.28:1WCAG normal text: Fail

Greyscale equivalent#171717

Inverted#BFF4E8

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#191817no red cones; affects about 1% of men; ΔE 26.9 from the original

Deuteranopia#262316no green cones; the most common form, about 1% of men; ΔE 27.6 from the original

Tritanopia#470110no blue cones; rare, and affects men and women equally; ΔE 7.7 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text16.43:1WCAG large text: AAA

Contrast with black, large text1.28:1WCAG large text: Fail

Named colours

Black · ΔE 29.6 Maroon · ΔE 40.4 Brown · ΔE 42.1 Dim grey · ΔE 42.3 Saddle brown · ΔE 42.6 Sienna · ΔE 43.1

Nearest named CSS colourBlack (#000000)ΔE 29.59, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#0B4034

Analogous#400B32, #401A0B

Triadic#17400B, #0B1740

Split complementary#0B401A, #0B3140

Tetradic#31400B, #0B4034, #1A0B40

Tints, shades & saturation

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

Lighter +40%#DD3A5F

Lighter +30%#C32146

Lighter +20%#971A36

Lighter +10%#6C1227

Darker −10%#140407

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#490212

Less saturated −25%#37141C

Channel breakdown

R64

G11

B23

Red64 (25.1%)

Green11 (4.3%)

Blue23 (9%)

Hue346.42°

Saturation (HSL)70.67%

Lightness14.71%

Dominant channelRed

Hex per channelR 40 · G 0B · B 17

Keep nerding

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

#400B17

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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