Colour

#171F1E

#171F1E
Cyan
Dark
Nearest: Black

#171F1E is a cyan with RGB values 23, 31, 30 and HSL 173°, 15%, 11%. 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

#171F1E#171F1E

HEX#171F1E

RGBrgb(23, 31, 30)

RGB (0–1)0.0902, 0.1216, 0.1176

RGB percentages9%, 12.2%, 11.8%

HSLhsl(172.5, 14.8%, 10.6%)

HSV / HSBhsv(172.5, 25.8%, 12.2%)

CMYK25.8%, 0%, 3.2%, 87.8%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer1,515,294

CSS custom property--colour: #171F1E;

Brightness & contrast

Relative luminance0.01256WCAG 2.x, 0 is black and 1 is white

Perceived brightness28.7 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#1D1D1D

Inverted#E8E0E1

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#1E1E1Eno red cones; affects about 1% of men; ΔE 3.9 from the original

Deuteranopia#1D1D1Eno green cones; the most common form, about 1% of men; ΔE 4.2 from the original

Tritanopia#151F1Fno blue cones; rare, and affects men and women equally; ΔE 1.1 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 11.6 Dark slate grey · ΔE 22 Dim grey · ΔE 33.7 Gray · ΔE 42.8 Slate grey · ΔE 43.1 Teal · ΔE 45.6

Nearest named CSS colourBlack (#000000)ΔE 11.65, a distinctly different colour

Hue familycyan

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1F1718

Analogous#171F1A, #171C1F

Triadic#1E171F, #1F1E17

Split complementary#1F171C, #1F1A17

Tetradic#1A171F, #1F1718, #1C1F17

Tints, shades & saturation

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

Lighter +40%#6E948F

Lighter +30%#587773

Lighter +20%#425A57

Lighter +10%#2D3C3A

Darker −10%#010202

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#102623

Less saturated −25%#1B1B1B

Channel breakdown

R23

G31

B30

Red23 (9%)

Green31 (12.2%)

Blue30 (11.8%)

Hue172.5°

Saturation (HSL)14.81%

Lightness10.59%

Dominant channelGreen

Hex per channelR 17 · G 1F · B 1E

Keep nerding

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

#171F1E

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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