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Recognised as Colour

#174A59

  • #174A59
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#174A59 is a cyan with RGB values 23, 74, 89 and HSL 194°, 59%, 22%. It is a dark colour, so white text on it reaches 9.7:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#174A59#174A59
HEX#174A59
RGBrgb(23, 74, 89)
RGB (0–1)0.0902, 0.2902, 0.349
RGB percentages9%, 29%, 34.9%
HSLhsl(193.6, 58.9%, 22%)
HSV / HSBhsv(193.6, 74.2%, 34.9%)
CMYK74.2%, 16.9%, 0%, 65.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,526,361
CSS custom property--colour: #174A59;

Brightness & contrast

Relative luminance0.05801WCAG 2.x, 0 is black and 1 is white
Perceived brightness65.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.72:1
Contrast with white9.72:1WCAG normal text: AAA
Contrast with black2.16:1WCAG normal text: Fail
Greyscale equivalent#404040
Inverted#E8B5A6

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#41485Ano red cones; affects about 1% of men; ΔE 13.4 from the original
Deuteranopia#384159no green cones; the most common form, about 1% of men; ΔE 14.4 from the original
Tritanopia#004F4Fno blue cones; rare, and affects men and women equally; ΔE 12.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text9.72:1WCAG large text: AAA
Contrast with black, large text2.16:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 10.3Dim grey · ΔE 23.6Slate grey · ΔE 25.8Teal · ΔE 26.7Light slate grey · ΔE 28.6Gray · ΔE 30.4
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 10.34, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#592617
Analogous#175947, #172959
Triadic#59174A, #4A5917
Split complementary#591729, #594717
Tetradic#471759, #592617, #295917

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#65BDD7
Lighter +30%#3CACCD
Lighter +20%#2C8DAA
Lighter +10%#216C82
Darker −10%#0D2830
Darker −20%#020708
Darker −30%#000000
Darker −40%#000000
More saturated +25%#095267
Less saturated −25%#25424B

Channel breakdown

R23
G74
B89
Red23 (9%)
Green74 (29%)
Blue89 (34.9%)
Hue193.64°
Saturation (HSL)58.93%
Lightness21.96%
Dominant channelBlue
Hex per channelR 17 · G 4A · B 59

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Every value on this page was computed from “174a59” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.