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Recognised as Colour

#17D2EF

  • #17D2EF
  • Cyan
  • Light
  • Nearest: Dark turquoise

#17D2EF is a cyan with RGB values 23, 210, 239 and HSL 188°, 87%, 51%. It is a light colour, so black text on it reaches 11.5:1 contrast (AAA for normal text). The nearest named colour is Dark turquoise.

Colour values

#17D2EF#17D2EF
HEX#17D2EF
RGBrgb(23, 210, 239)
RGB (0–1)0.0902, 0.8235, 0.9373
RGB percentages9%, 82.4%, 93.7%
HSLhsl(188.1, 87.1%, 51.4%)
HSV / HSBhsv(188.1, 90.4%, 93.7%)
CMYK90.4%, 12.1%, 0%, 6.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,561,327
CSS custom property--colour: #17D2EF;

Brightness & contrast

Relative luminance0.52507WCAG 2.x, 0 is black and 1 is white
Perceived brightness180.4 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 11.5:1
Contrast with white1.83:1WCAG normal text: Fail
Contrast with black11.5:1WCAG normal text: AAA
Greyscale equivalent#ACACAC
Inverted#E82D10

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#BCCAF1no red cones; affects about 1% of men; ΔE 35.9 from the original
Deuteranopia#A2B8EFno green cones; the most common form, about 1% of men; ΔE 37.3 from the original
Tritanopia#00DDDBno blue cones; rare, and affects men and women equally; ΔE 18.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text1.83:1WCAG large text: Fail
Contrast with black, large text11.5:1WCAG large text: AAA

Named colours

Dark turquoise · ΔE 15.2Sky blue · ΔE 17.8Medium turquoise · ΔE 18.6Light skyblue · ΔE 21.3Deep skyblue · ΔE 22.3Light seagreen · ΔE 23.7
Nearest named CSS colourDark turquoise (#00CED1)ΔE 15.21, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#EF3417
Analogous#17EFA0, #1766EF
Triadic#EF17D2, #D2EF17
Split complementary#EF1766, #EFA017
Tetradic#A017EF, #EF3417, #66EF17

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D6F7FC
Lighter +30%#A6EEF9
Lighter +20%#76E5F6
Lighter +10%#47DBF2
Darker −10%#0EADC5
Darker −20%#0A8396
Darker −30%#075966
Darker −40%#042F36
More saturated +25%#07DEFF
Less saturated −25%#36BBD0

Channel breakdown

R23
G210
B239
Red23 (9%)
Green210 (82.4%)
Blue239 (93.7%)
Hue188.06°
Saturation (HSL)87.1%
Lightness51.37%
Dominant channelBlue
Hex per channelR 17 · G D2 · B EF

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Every value on this page was computed from “17d2ef” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.