Colour

#181A1F

#181A1F
Blue
Dark
Nearest: Black

#181A1F is a blue with RGB values 24, 26, 31 and HSL 223°, 13%, 11%. It is a dark colour, so white text on it reaches 17.4:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#181A1F#181A1F

HEX#181A1F

RGBrgb(24, 26, 31)

RGB (0–1)0.0941, 0.102, 0.1216

RGB percentages9.4%, 10.2%, 12.2%

HSLhsl(222.9, 12.7%, 10.8%)

HSV / HSBhsv(222.9, 22.6%, 12.2%)

CMYK22.6%, 16.1%, 0%, 87.8%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer1,579,551

CSS custom property--colour: #181A1F;

Brightness & contrast

Relative luminance0.01032WCAG 2.x, 0 is black and 1 is white

Perceived brightness26 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 17.41:1

Contrast with white17.41:1WCAG normal text: AAA

Contrast with black1.21:1WCAG normal text: Fail

Greyscale equivalent#1A1A1A

Inverted#E7E5E0

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#191A1Fno red cones; affects about 1% of men; ΔE 0.5 from the original

Deuteranopia#181A1Fno green cones; the most common form, about 1% of men; ΔE 0 from the original

Tritanopia#161B1Cno blue cones; rare, and affects men and women equally; ΔE 3.4 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text17.41:1WCAG large text: AAA

Contrast with black, large text1.21:1WCAG large text: Fail

Named colours

Black · ΔE 10 Dark slate grey · ΔE 25.1 Dim grey · ΔE 35.4 Slate grey · ΔE 44.2 Gray · ΔE 44.5 Light slate grey · ΔE 47.3

Nearest named CSS colourBlack (#000000)ΔE 10.01, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1F1D18

Analogous#181D1F, #1A181F

Triadic#1F181A, #1A1F18

Split complementary#1F1A18, #1D1F18

Tetradic#1F181D, #1F1D18, #181F1A

Tints, shades & saturation

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

Lighter +40%#727B91

Lighter +30%#5B6275

Lighter +20%#454A58

Lighter +10%#2E323C

Darker −10%#020202

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#111726

Less saturated −25%#1C1C1C

Channel breakdown

R24

G26

B31

Red24 (9.4%)

Green26 (10.2%)

Blue31 (12.2%)

Hue222.86°

Saturation (HSL)12.73%

Lightness10.78%

Dominant channelBlue

Hex per channelR 18 · G 1A · B 1F

Keep nerding

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

#181A1F

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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