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Recognised as Colour

#17516C

  • #17516C
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#17516C is a cyan with RGB values 23, 81, 108 and HSL 199°, 65%, 26%. It is a dark colour, so white text on it reaches 8.6:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#17516C#17516C
HEX#17516C
RGBrgb(23, 81, 108)
RGB (0–1)0.0902, 0.3176, 0.4235
RGB percentages9%, 31.8%, 42.4%
HSLhsl(199.1, 64.9%, 25.7%)
HSV / HSBhsv(199.1, 78.7%, 42.4%)
CMYK78.7%, 25%, 0%, 57.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,528,172
CSS custom property--colour: #17516C;

Brightness & contrast

Relative luminance0.0715WCAG 2.x, 0 is black and 1 is white
Perceived brightness73.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.64:1
Contrast with white8.64:1WCAG normal text: AAA
Contrast with black2.43:1WCAG normal text: Fail
Greyscale equivalent#474747
Inverted#E8AE93

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#44506Dno red cones; affects about 1% of men; ΔE 12 from the original
Deuteranopia#38486Cno green cones; the most common form, about 1% of men; ΔE 13.1 from the original
Tritanopia#00585Ano blue cones; rare, and affects men and women equally; ΔE 18.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text8.64:1WCAG large text: AAA
Contrast with black, large text2.43:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 17.5Steel blue · ΔE 23.7Slate grey · ΔE 23.9Dim grey · ΔE 25.6Light slate grey · ΔE 26.4Teal · ΔE 28.8
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 17.47, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#6C3217
Analogous#176C5C, #17276C
Triadic#6C1751, #516C17
Split complementary#6C1727, #6C5D17
Tetradic#5C176C, #6C3217, #276C17

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#6FBCE0
Lighter +30%#45A9D7
Lighter +20%#2990C0
Lighter +10%#207196
Darker −10%#0E3142
Darker −20%#051218
Darker −30%#000000
Darker −40%#000000
More saturated +25%#07577C
Less saturated −25%#274B5C

Channel breakdown

R23
G81
B108
Red23 (9%)
Green81 (31.8%)
Blue108 (42.4%)
Hue199.06°
Saturation (HSL)64.89%
Lightness25.69%
Dominant channelBlue
Hex per channelR 17 · G 51 · B 6C

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Every value on this page was computed from “17516c” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.