Colour

#171F22

#171F22
Cyan
Dark
Nearest: Black

#171F22 is a cyan with RGB values 23, 31, 34 and HSL 196°, 19%, 11%. 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

#171F22#171F22

HEX#171F22

RGBrgb(23, 31, 34)

RGB (0–1)0.0902, 0.1216, 0.1333

RGB percentages9%, 12.2%, 13.3%

HSLhsl(196.4, 19.3%, 11.2%)

HSV / HSBhsv(196.4, 32.4%, 13.3%)

CMYK32.4%, 8.8%, 0%, 86.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer1,515,298

CSS custom property--colour: #171F22;

Brightness & contrast

Relative luminance0.01278WCAG 2.x, 0 is black and 1 is white

Perceived brightness29.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 16.73:1

Contrast with white16.73:1WCAG normal text: AAA

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

Greyscale equivalent#1E1E1E

Inverted#E8E0DD

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#1D1F22no red cones; affects about 1% of men; ΔE 2.8 from the original

Deuteranopia#1C1D22no green cones; the most common form, about 1% of men; ΔE 3.6 from the original

Tritanopia#142020no blue cones; rare, and affects men and women equally; ΔE 3 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text16.73:1WCAG large text: AAA

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

Named colours

Black · ΔE 11.9 Dark slate grey · ΔE 22.1 Dim grey · ΔE 33.6 Slate grey · ΔE 42.4 Gray · ΔE 42.7 Light slate grey · ΔE 45.5

Nearest named CSS colourBlack (#000000)ΔE 11.89, a distinctly different colour

Hue familycyan

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#221A17

Analogous#17221F, #171922

Triadic#22171F, #1F2217

Split complementary#221719, #221F17

Tetradic#1F1722, #221A17, #192217

Tints, shades & saturation

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

Lighter +40%#6A8D9B

Lighter +30%#55727D

Lighter +20%#40565F

Lighter +10%#2C3B40

Darker −10%#020304

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#102229

Less saturated −25%#1C1C1C

Channel breakdown

R23

G31

B34

Red23 (9%)

Green31 (12.2%)

Blue34 (13.3%)

Hue196.36°

Saturation (HSL)19.3%

Lightness11.18%

Dominant channelBlue

Hex per channelR 17 · G 1F · B 22

Keep nerding

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

#171F22

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