Colour

#171C2A

#171C2A
Blue
Dark
Nearest: Black

#171C2A is a blue with RGB values 23, 28, 42 and HSL 224°, 29%, 13%. It is a dark colour, so white text on it reaches 17:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#171C2A#171C2A

HEX#171C2A

RGBrgb(23, 28, 42)

RGB (0–1)0.0902, 0.1098, 0.1647

RGB percentages9%, 11%, 16.5%

HSLhsl(224.2, 29.2%, 12.7%)

HSV / HSBhsv(224.2, 45.2%, 16.5%)

CMYK45.2%, 33.3%, 0%, 83.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer1,514,538

CSS custom property--colour: #171C2A;

Brightness & contrast

Relative luminance0.0118WCAG 2.x, 0 is black and 1 is white

Perceived brightness28.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 16.99:1

Contrast with white16.99:1WCAG normal text: AAA

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

Greyscale equivalent#1C1C1C

Inverted#E8E3D5

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#171D2Bno red cones; affects about 1% of men; ΔE 0.6 from the original

Deuteranopia#161C2Ano green cones; the most common form, about 1% of men; ΔE 0.4 from the original

Tritanopia#111F21no blue cones; rare, and affects men and women equally; ΔE 10.2 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text16.99:1WCAG large text: AAA

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

Named colours

Black · ΔE 14.7 Dark slate grey · ΔE 25.9 Dim grey · ΔE 35.6 Slate grey · ΔE 42.6 Gray · ΔE 44.4 Dark slateblue · ΔE 44.8

Nearest named CSS colourBlack (#000000)ΔE 14.73, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#2A2517

Analogous#17252A, #1C172A

Triadic#2A171C, #1C2A17

Split complementary#2A1B17, #252A17

Tetradic#2A1725, #2A2517, #172A1B

Tints, shades & saturation

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

Lighter +40%#6376AA

Lighter +30%#4D5E8D

Lighter +20%#3B486C

Lighter +10%#29324B

Darker −10%#050609

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#0F1832

Less saturated −25%#1F2022

Channel breakdown

R23

G28

B42

Red23 (9%)

Green28 (11%)

Blue42 (16.5%)

Hue224.21°

Saturation (HSL)29.23%

Lightness12.75%

Dominant channelBlue

Hex per channelR 17 · G 1C · B 2A

Keep nerding

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

#171C2A

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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