Colour

#171A22

#171A22
Blue
Dark
Nearest: Black

#171A22 is a blue with RGB values 23, 26, 34 and HSL 224°, 19%, 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

#171A22#171A22

HEX#171A22

RGBrgb(23, 26, 34)

RGB (0–1)0.0902, 0.102, 0.1333

RGB percentages9%, 10.2%, 13.3%

HSLhsl(223.6, 19.3%, 11.2%)

HSV / HSBhsv(223.6, 32.4%, 13.3%)

CMYK32.4%, 23.5%, 0%, 86.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer1,514,018

CSS custom property--colour: #171A22;

Brightness & contrast

Relative luminance0.01036WCAG 2.x, 0 is black and 1 is white

Perceived brightness26.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 17.39:1

Contrast with white17.39:1WCAG normal text: AAA

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

Greyscale equivalent#1A1A1A

Inverted#E8E5DD

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#181B22no red cones; affects about 1% of men; ΔE 0.9 from the original

Deuteranopia#171A22no green cones; the most common form, about 1% of men; ΔE 0 from the original

Tritanopia#141C1Dno blue cones; rare, and affects men and women equally; ΔE 5.9 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text17.39:1WCAG large text: AAA

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

Named colours

Black · ΔE 11.1 Dark slate grey · ΔE 25.5 Dim grey · ΔE 35.6 Slate grey · ΔE 43.9 Gray · ΔE 44.7 Light slate grey · ΔE 47

Nearest named CSS colourBlack (#000000)ΔE 11.09, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#221F17

Analogous#171F22, #191722

Triadic#22171A, #1A2217

Split complementary#221917, #1F2217

Tetradic#22171F, #221F17, #172219

Tints, shades & saturation

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

Lighter +40%#6A789B

Lighter +30%#55607D

Lighter +20%#40495F

Lighter +10%#2C3140

Darker −10%#020304

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#101729

Less saturated −25%#1C1C1C

Channel breakdown

R23

G26

B34

Red23 (9%)

Green26 (10.2%)

Blue34 (13.3%)

Hue223.64°

Saturation (HSL)19.3%

Lightness11.18%

Dominant channelBlue

Hex per channelR 17 · G 1A · B 22

Keep nerding

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#171A22

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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