Colour

#171C36

#171C36
Blue
Dark
Nearest: Black

#171C36 is a blue with RGB values 23, 28, 54 and HSL 230°, 40%, 15%. It is a dark colour, so white text on it reaches 16.7:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#171C36#171C36

HEX#171C36

RGBrgb(23, 28, 54)

RGB (0–1)0.0902, 0.1098, 0.2118

RGB percentages9%, 11%, 21.2%

HSLhsl(230.3, 40.3%, 15.1%)

HSV / HSBhsv(230.3, 57.4%, 21.2%)

CMYK57.4%, 48.1%, 0%, 78.8%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer1,514,550

CSS custom property--colour: #171C36;

Brightness & contrast

Relative luminance0.01279WCAG 2.x, 0 is black and 1 is white

Perceived brightness30.8 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 16.72:1

Contrast with white16.72:1WCAG normal text: AAA

Contrast with black1.26:1WCAG normal text: Fail

Greyscale equivalent#1D1D1D

Inverted#E8E3C9

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#121F37no red cones; affects about 1% of men; ΔE 3.4 from the original

Deuteranopia#0F1D35no green cones; the most common form, about 1% of men; ΔE 3.4 from the original

Tritanopia#0B2126no blue cones; rare, and affects men and women equally; ΔE 17.9 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text16.72:1WCAG large text: AAA

Contrast with black, large text1.26:1WCAG large text: Fail

Named colours

Black · ΔE 22 Dark slate grey · ΔE 30.6 Dark slateblue · ΔE 36.8 Dim grey · ΔE 38.3 Midnight blue · ΔE 40.8 Slate grey · ΔE 43.2

Nearest named CSS colourBlack (#000000)ΔE 22, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#363117

Analogous#172B36, #221736

Triadic#36171C, #1C3617

Split complementary#362217, #2B3617

Tetradic#36172B, #363117, #173622

Tints, shades & saturation

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

Lighter +40%#5E6DBB

Lighter +30%#4554A1

Lighter +20%#35417E

Lighter +10%#262F5A

Darker −10%#080912

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#0D1540

Less saturated −25%#21232C

Channel breakdown

R23

G28

B54

Red23 (9%)

Green28 (11%)

Blue54 (21.2%)

Hue230.32°

Saturation (HSL)40.26%

Lightness15.1%

Dominant channelBlue

Hex per channelR 17 · G 1C · B 36

Keep nerding

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

#171C36

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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