Colour

#171D35

#171D35
Blue
Dark
Nearest: Black

#171D35 is a blue with RGB values 23, 29, 53 and HSL 228°, 39%, 15%. It is a dark colour, so white text on it reaches 16.6:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#171D35#171D35

HEX#171D35

RGBrgb(23, 29, 53)

RGB (0–1)0.0902, 0.1137, 0.2078

RGB percentages9%, 11.4%, 20.8%

HSLhsl(228, 39.5%, 14.9%)

HSV / HSBhsv(228, 56.6%, 20.8%)

CMYK56.6%, 45.3%, 0%, 79.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer1,514,805

CSS custom property--colour: #171D35;

Brightness & contrast

Relative luminance0.01318WCAG 2.x, 0 is black and 1 is white

Perceived brightness31.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 16.62:1

Contrast with white16.62:1WCAG normal text: AAA

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

Greyscale equivalent#1D1D1D

Inverted#E8E2CA

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#142036no red cones; affects about 1% of men; ΔE 3 from the original

Deuteranopia#111D34no green cones; the most common form, about 1% of men; ΔE 2.2 from the original

Tritanopia#0B2226no blue cones; rare, and affects men and women equally; ΔE 17.1 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text16.62:1WCAG large text: AAA

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

Named colours

Black · ΔE 20.9 Dark slate grey · ΔE 29.3 Dim grey · ΔE 37.4 Dark slateblue · ΔE 38.1 Midnight blue · ΔE 42.3 Slate grey · ΔE 42.6

Nearest named CSS colourBlack (#000000)ΔE 20.89, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#352F17

Analogous#172C35, #201735

Triadic#35171D, #1D3517

Split complementary#352017, #2C3517

Tetradic#35172C, #352F17, #173520

Tints, shades & saturation

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

Lighter +40%#5F71B9

Lighter +30%#4557A0

Lighter +20%#36447C

Lighter +10%#263059

Darker −10%#080A11

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#0D173F

Less saturated −25%#21232B

Channel breakdown

R23

G29

B53

Red23 (9%)

Green29 (11.4%)

Blue53 (20.8%)

Hue228°

Saturation (HSL)39.47%

Lightness14.9%

Dominant channelBlue

Hex per channelR 17 · G 1D · B 35

Keep nerding

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

#171D35

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

Nerdulate something else