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Recognised as Colour

#173C49

  • #173C49
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#173C49 is a cyan with RGB values 23, 60, 73 and HSL 196°, 52%, 19%. It is a dark colour, so white text on it reaches 11.8:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#173C49#173C49
HEX#173C49
RGBrgb(23, 60, 73)
RGB (0–1)0.0902, 0.2353, 0.2863
RGB percentages9%, 23.5%, 28.6%
HSLhsl(195.6, 52.1%, 18.8%)
HSV / HSBhsv(195.6, 68.5%, 28.6%)
CMYK68.5%, 17.8%, 0%, 71.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,522,761
CSS custom property--colour: #173C49;

Brightness & contrast

Relative luminance0.03895WCAG 2.x, 0 is black and 1 is white
Perceived brightness53.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.8:1
Contrast with white11.8:1WCAG normal text: AAA
Contrast with black1.78:1WCAG normal text: Fail
Greyscale equivalent#353535
Inverted#E8C3B6

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#353B4Ano red cones; affects about 1% of men; ΔE 10.3 from the original
Deuteranopia#2E3549no green cones; the most common form, about 1% of men; ΔE 11.4 from the original
Tritanopia#004040no blue cones; rare, and affects men and women equally; ΔE 11.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text11.8:1WCAG large text: AAA
Contrast with black, large text1.78:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 11.8Dim grey · ΔE 25.7Black · ΔE 27.5Slate grey · ΔE 30.2Teal · ΔE 32.4Light slate grey · ΔE 33.2
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 11.83, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#492417
Analogous#17493D, #172349
Triadic#49173C, #3C4917
Split complementary#491723, #493D17
Tetradic#3D1749, #492417, #234917

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#5FB0CD
Lighter +30%#3C9CBD
Lighter +20%#2F7C97
Lighter +10%#235C70
Darker −10%#0B1C22
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#0B4255
Less saturated −25%#23363D

Channel breakdown

R23
G60
B73
Red23 (9%)
Green60 (23.5%)
Blue73 (28.6%)
Hue195.6°
Saturation (HSL)52.08%
Lightness18.82%
Dominant channelBlue
Hex per channelR 17 · G 3C · B 49

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Every value on this page was computed from “173c49” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.