Colour

#171D29

#171D29
Blue
Dark
Nearest: Black

#171D29 is a blue with RGB values 23, 29, 41 and HSL 220°, 28%, 13%. It is a dark colour, so white text on it reaches 16.9:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#171D29#171D29

HEX#171D29

RGBrgb(23, 29, 41)

RGB (0–1)0.0902, 0.1137, 0.1608

RGB percentages9%, 11.4%, 16.1%

HSLhsl(220, 28.1%, 12.5%)

HSV / HSBhsv(220, 43.9%, 16.1%)

CMYK43.9%, 29.3%, 0%, 83.9%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer1,514,793

CSS custom property--colour: #171D29;

Brightness & contrast

Relative luminance0.01221WCAG 2.x, 0 is black and 1 is white

Perceived brightness29 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 16.88:1

Contrast with white16.88:1WCAG normal text: AAA

Contrast with black1.24:1WCAG normal text: Fail

Greyscale equivalent#1D1D1D

Inverted#E8E2D6

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#191E2Ano red cones; affects about 1% of men; ΔE 0.7 from the original

Deuteranopia#171C29no green cones; the most common form, about 1% of men; ΔE 1 from the original

Tritanopia#121F21no blue cones; rare, and affects men and women equally; ΔE 8.4 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text16.88:1WCAG large text: AAA

Contrast with black, large text1.24:1WCAG large text: Fail

Named colours

Black · ΔE 14 Dark slate grey · ΔE 24.8 Dim grey · ΔE 34.9 Slate grey · ΔE 42.3 Gray · ΔE 43.8 Light slate grey · ΔE 45.4

Nearest named CSS colourBlack (#000000)ΔE 14.03, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#292317

Analogous#172629, #1A1729

Triadic#29171D, #1D2917

Split complementary#291A17, #262917

Tetradic#291726, #292317, #17291A

Tints, shades & saturation

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

Lighter +40%#647BA8

Lighter +30%#4E628B

Lighter +20%#3C4B6A

Lighter +10%#29344A

Darker −10%#050608

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#0F1A31

Less saturated −25%#1F2021

Channel breakdown

R23

G29

B41

Red23 (9%)

Green29 (11.4%)

Blue41 (16.1%)

Hue220°

Saturation (HSL)28.13%

Lightness12.55%

Dominant channelBlue

Hex per channelR 17 · G 1D · B 29

Keep nerding

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

#171D29

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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