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Recognised as Colour

#17A0EF

  • #17A0EF
  • Blue
  • Dark
  • Nearest: Cornflower blue

#17A0EF is a blue with RGB values 23, 160, 239 and HSL 202°, 87%, 51%. It is a dark colour, so black text on it reaches 7.3:1 contrast (AAA for normal text). The nearest named colour is Cornflower blue.

Colour values

#17A0EF#17A0EF
HEX#17A0EF
RGBrgb(23, 160, 239)
RGB (0–1)0.0902, 0.6275, 0.9373
RGB percentages9%, 62.7%, 93.7%
HSLhsl(201.9, 87.1%, 51.4%)
HSV / HSBhsv(201.9, 90.4%, 93.7%)
CMYK90.4%, 33.1%, 0%, 6.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,548,527
CSS custom property--colour: #17A0EF;

Brightness & contrast

Relative luminance0.31556WCAG 2.x, 0 is black and 1 is white
Perceived brightness147.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 7.31:1
Contrast with white2.87:1WCAG normal text: Fail
Contrast with black7.31:1WCAG normal text: AAA
Greyscale equivalent#898989
Inverted#E85F10

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#7AA2F2no red cones; affects about 1% of men; ΔE 15 from the original
Deuteranopia#5D90EEno green cones; the most common form, about 1% of men; ΔE 17.6 from the original
Tritanopia#00B4BCno blue cones; rare, and affects men and women equally; ΔE 44.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.87:1WCAG large text: Fail
Contrast with black, large text7.31:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 15.1Deep skyblue · ΔE 16.6Steel blue · ΔE 19.8Dodgerblue · ΔE 21.7Light skyblue · ΔE 26.9Sky blue · ΔE 33.3
Nearest named CSS colourCornflower blue (#6495ED)ΔE 15.11, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#EF6617
Analogous#17EFD2, #1734EF
Triadic#EF17A0, #A0EF17
Split complementary#EF1734, #EFD217
Tetradic#D217EF, #EF6617, #34EF17

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D6EEFC
Lighter +30%#A6DBF9
Lighter +20%#76C7F6
Lighter +10%#47B4F2
Darker −10%#0E82C5
Darker −20%#0A6396
Darker −30%#074366
Darker −40%#042436
More saturated +25%#07A4FF
Less saturated −25%#3698D0

Channel breakdown

R23
G160
B239
Red23 (9%)
Green160 (62.7%)
Blue239 (93.7%)
Hue201.94°
Saturation (HSL)87.1%
Lightness51.37%
Dominant channelBlue
Hex per channelR 17 · G A0 · B EF

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Every value on this page was computed from “17a0ef” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.