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Recognised as Colour

#17BCD4

  • #17BCD4
  • Cyan
  • Dark
  • Nearest: Dark turquoise

#17BCD4 is a cyan with RGB values 23, 188, 212 and HSL 188°, 80%, 46%. It is a dark colour, so black text on it reaches 9.2:1 contrast (AAA for normal text). The nearest named colour is Dark turquoise.

Colour values

#17BCD4#17BCD4
HEX#17BCD4
RGBrgb(23, 188, 212)
RGB (0–1)0.0902, 0.7373, 0.8314
RGB percentages9%, 73.7%, 83.1%
HSLhsl(187.6, 80.4%, 46.1%)
HSV / HSBhsv(187.6, 89.2%, 83.1%)
CMYK89.2%, 11.3%, 0%, 16.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,555,668
CSS custom property--colour: #17BCD4;

Brightness & contrast

Relative luminance0.40902WCAG 2.x, 0 is black and 1 is white
Perceived brightness161.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 9.18:1
Contrast with white2.29:1WCAG normal text: Fail
Contrast with black9.18:1WCAG normal text: AAA
Greyscale equivalent#9B9B9B
Inverted#E8432B

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#A9B5D5no red cones; affects about 1% of men; ΔE 33.2 from the original
Deuteranopia#92A4D4no green cones; the most common form, about 1% of men; ΔE 35 from the original
Tritanopia#00C6C3no blue cones; rare, and affects men and women equally; ΔE 16.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.29:1WCAG large text: Fail
Contrast with black, large text9.18:1WCAG large text: AAA

Named colours

Dark turquoise · ΔE 14.8Sky blue · ΔE 17.7Medium turquoise · ΔE 17.8Light seagreen · ΔE 18.8Cadetblue · ΔE 20.7Light skyblue · ΔE 22.1
Nearest named CSS colourDark turquoise (#00CED1)ΔE 14.81, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#D42F17
Analogous#17D48D, #175ED4
Triadic#D417BC, #BCD417
Split complementary#D4175E, #D48D17
Tetradic#8D17D4, #D42F17, #5ED417

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#BFF1F8
Lighter +30%#91E7F3
Lighter +20%#63DCEE
Lighter +10%#35D2E9
Darker −10%#1293A6
Darker −20%#0D6A78
Darker −30%#08424A
Darker −40%#03191C
More saturated +25%#00CDEB
Less saturated −25%#34A6B7

Channel breakdown

R23
G188
B212
Red23 (9%)
Green188 (73.7%)
Blue212 (83.1%)
Hue187.62°
Saturation (HSL)80.43%
Lightness46.08%
Dominant channelBlue
Hex per channelR 17 · G BC · B D4

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Every value on this page was computed from “17bcd4” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.