Recognised as Colour

#40131F

#40131F
Red
Dark
Nearest: Black

#40131F is a red with RGB values 64, 19, 31 and HSL 344°, 54%, 16%. It is a dark colour, so white text on it reaches 15.8:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#40131F#40131F

HEX#40131F

RGBrgb(64, 19, 31)

RGB (0–1)0.251, 0.0745, 0.1216

RGB percentages25.1%, 7.5%, 12.2%

HSLhsl(344, 54.2%, 16.3%)

HSV / HSBhsv(344, 70.3%, 25.1%)

CMYK0%, 70.3%, 51.6%, 74.9%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer4,199,199

CSS custom property--colour: #40131F;

Brightness & contrast

Relative luminance0.01655WCAG 2.x, 0 is black and 1 is white

Perceived brightness39.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 15.78:1

Contrast with white15.78:1WCAG normal text: AAA

Contrast with black1.33:1WCAG normal text: Fail

Greyscale equivalent#1D1D1D

Inverted#BFECE0

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#1C1D1Fno red cones; affects about 1% of men; ΔE 23.7 from the original

Deuteranopia#28261Eno green cones; the most common form, about 1% of men; ΔE 24.1 from the original

Tritanopia#460D18no blue cones; rare, and affects men and women equally; ΔE 7 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text15.78:1WCAG large text: AAA

Contrast with black, large text1.33:1WCAG large text: Fail

Named colours

Black · ΔE 27 Dim grey · ΔE 38.7 Dark slate grey · ΔE 39.7 Maroon · ΔE 44.4 Sienna · ΔE 44.7 Saddle brown · ΔE 44.8

Nearest named CSS colourBlack (#000000)ΔE 27.01, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#134034

Analogous#401335, #401D13

Triadic#1F4013, #131F40

Split complementary#13401D, #133540

Tetradic#354013, #134034, #1D1340

Tints, shades & saturation

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

Lighter +40%#CC5373

Lighter +30%#B63658

Lighter +20%#8F2A45

Lighter +10%#671F32

Darker −10%#19070C

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#4A091A

Less saturated −25%#361D24

Channel breakdown

R64

G19

B31

Red64 (25.1%)

Green19 (7.5%)

Blue31 (12.2%)

Hue344°

Saturation (HSL)54.22%

Lightness16.27%

Dominant channelRed

Hex per channelR 40 · G 13 · B 1F

Keep nerding

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

#40131F

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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