Colour

#181B00

#181B00
Yellow
Dark
Nearest: Black

#181B00 is a yellow with RGB values 24, 27, 0 and HSL 67°, 100%, 5%. It is a dark colour, so white text on it reaches 17.6:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#181B00#181B00

HEX#181B00

RGBrgb(24, 27, 0)

RGB (0–1)0.0941, 0.1059, 0

RGB percentages9.4%, 10.6%, 0%

HSLhsl(66.7, 100%, 5.3%)

HSV / HSBhsv(66.7, 100%, 10.6%)

CMYK11.1%, 0%, 100%, 89.4%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer1,579,776

CSS custom property--colour: #181B00;

Brightness & contrast

Relative luminance0.00978WCAG 2.x, 0 is black and 1 is white

Perceived brightness24.5 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 17.56:1

Contrast with white17.56:1WCAG normal text: AAA

Contrast with black1.2:1WCAG normal text: Fail

Greyscale equivalent#181818

Inverted#E7E4FF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#1E1900no red cones; affects about 1% of men; ΔE 4.9 from the original

Deuteranopia#1E1901no green cones; the most common form, about 1% of men; ΔE 5.1 from the original

Tritanopia#1A1915no blue cones; rare, and affects men and women equally; ΔE 11.8 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text17.56:1WCAG large text: AAA

Contrast with black, large text1.2:1WCAG large text: Fail

Named colours

Black · ΔE 17 Dark slate grey · ΔE 28.5 Dim grey · ΔE 38.5 Dark olivegreen · ΔE 39.7 Gray · ΔE 47.1 Slate grey · ΔE 50.2

Nearest named CSS colourBlack (#000000)ΔE 17.03, a distinctly different colour

Hue familyyellow

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#03001B

Analogous#1B1100, #0A1B00

Triadic#00181B, #1B0018

Split complementary#000A1B, #11001B

Tetradic#001B11, #03001B, #1B000A

Tints, shades & saturation

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

Lighter +40%#CDE700

Lighter +30%#A0B400

Lighter +20%#738100

Lighter +10%#454E00

Darker −10%#000000

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#181B00

Less saturated −25%#151803

Channel breakdown

R24

G27

Red24 (9.4%)

Green27 (10.6%)

Blue0 (0%)

Hue66.67°

Saturation (HSL)100%

Lightness5.29%

Dominant channelGreen

Hex per channelR 18 · G 1B · B 00

Keep nerding

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#181B00

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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