Recognised as Colour

#40180E

#40180E
Red
Dark
Nearest: Black

#40180E is a red with RGB values 64, 24, 14 and HSL 12°, 64%, 15%. It is a dark colour, so white text on it reaches 15.5:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#40180E#40180E

HEX#40180E

RGBrgb(64, 24, 14)

RGB (0–1)0.251, 0.0941, 0.0549

RGB percentages25.1%, 9.4%, 5.5%

HSLhsl(12, 64.1%, 15.3%)

HSV / HSBhsv(12, 78.1%, 25.1%)

CMYK0%, 62.5%, 78.1%, 74.9%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer4,200,462

CSS custom property--colour: #40180E;

Brightness & contrast

Relative luminance0.01775WCAG 2.x, 0 is black and 1 is white

Perceived brightness39.8 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 15.5:1

Contrast with white15.5:1WCAG normal text: AAA

Contrast with black1.35:1WCAG normal text: Fail

Greyscale equivalent#202020

Inverted#BFE7F1

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#231F0Dno red cones; affects about 1% of men; ΔE 20.5 from the original

Deuteranopia#2C270Dno green cones; the most common form, about 1% of men; ΔE 20.7 from the original

Tritanopia#471016no blue cones; rare, and affects men and women equally; ΔE 9.1 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text15.5:1WCAG large text: AAA

Contrast with black, large text1.35:1WCAG large text: Fail

Named colours

Black · ΔE 28.2 Saddle brown · ΔE 35.2 Sienna · ΔE 37.2 Maroon · ΔE 38.6 Dim grey · ΔE 38.8 Dark slate grey · ΔE 39.8

Nearest named CSS colourBlack (#000000)ΔE 28.22, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#0E3640

Analogous#400E1D, #40310E

Triadic#0E4018, #180E40

Split complementary#0E4031, #0E1D40

Tetradic#1D400E, #0E3640, #310E40

Tints, shades & saturation

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

Lighter +40%#D66144

Lighter +30%#BE4729

Lighter +20%#943720

Lighter +10%#6A2817

Darker −10%#160805

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#4A1204

Less saturated −25%#361E18

Channel breakdown

R64

G24

B14

Red64 (25.1%)

Green24 (9.4%)

Blue14 (5.5%)

Hue12°

Saturation (HSL)64.1%

Lightness15.29%

Dominant channelRed

Hex per channelR 40 · G 18 · B 0E

Keep nerding

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

#40180E

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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