Recognised as Colour

#171A3D

#171A3D
Blue
Dark
Nearest: Black

#171A3D is a blue with RGB values 23, 26, 61 and HSL 235°, 45%, 16%. It is a dark colour, so white text on it reaches 16.8:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#171A3D#171A3D

HEX#171A3D

RGBrgb(23, 26, 61)

RGB (0–1)0.0902, 0.102, 0.2392

RGB percentages9%, 10.2%, 23.9%

HSLhsl(235.3, 45.2%, 16.5%)

HSV / HSBhsv(235.3, 62.3%, 23.9%)

CMYK62.3%, 57.4%, 0%, 76.1%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer1,514,045

CSS custom property--colour: #171A3D;

Brightness & contrast

Relative luminance0.01258WCAG 2.x, 0 is black and 1 is white

Perceived brightness31.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 16.78:1

Contrast with white16.78:1WCAG normal text: AAA

Contrast with black1.25:1WCAG normal text: Fail

Greyscale equivalent#1C1C1C

Inverted#E8E5C2

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#091F3Eno red cones; affects about 1% of men; ΔE 6.5 from the original

Deuteranopia#051C3Cno green cones; the most common form, about 1% of men; ΔE 5.7 from the original

Tritanopia#052228no blue cones; rare, and affects men and women equally; ΔE 24.9 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text16.78:1WCAG large text: AAA

Contrast with black, large text1.25:1WCAG large text: Fail

Named colours

Black · ΔE 27.7 Dark slateblue · ΔE 31.4 Midnight blue · ΔE 34.1 Dark slate grey · ΔE 36 Dim grey · ΔE 42 Steel blue · ΔE 45.1

Nearest named CSS colourBlack (#000000)ΔE 27.74, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#3D3A17

Analogous#172D3D, #27173D

Triadic#3D171A, #1A3D17

Split complementary#3D2717, #2D3D17

Tetradic#3D172D, #3D3A17, #173D27

Tints, shades & saturation

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

Lighter +40%#5E66C2

Lighter +30%#4149AC

Lighter +20%#333A87

Lighter +10%#252A62

Darker −10%#090A18

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#0C1148

Less saturated −25%#212333

Channel breakdown

R23

G26

B61

Red23 (9%)

Green26 (10.2%)

Blue61 (23.9%)

Hue235.26°

Saturation (HSL)45.24%

Lightness16.47%

Dominant channelBlue

Hex per channelR 17 · G 1A · B 3D

Keep nerding

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

#171A3D

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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