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Recognised as Colour

#15DEE6

  • #15DEE6
  • Cyan
  • Light
  • Nearest: Dark turquoise

#15DEE6 is a cyan with RGB values 21, 222, 230 and HSL 182°, 83%, 49%. It is a light colour, so black text on it reaches 12.6:1 contrast (AAA for normal text). The nearest named colour is Dark turquoise.

Colour values

#15DEE6#15DEE6
HEX#15DEE6
RGBrgb(21, 222, 230)
RGB (0–1)0.0824, 0.8706, 0.902
RGB percentages8.2%, 87.1%, 90.2%
HSLhsl(182.3, 83.3%, 49.2%)
HSV / HSBhsv(182.3, 90.9%, 90.2%)
CMYK90.9%, 3.5%, 0%, 9.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,433,318
CSS custom property--colour: #15DEE6;

Brightness & contrast

Relative luminance0.58115WCAG 2.x, 0 is black and 1 is white
Perceived brightness187.3 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 12.62:1
Contrast with white1.66:1WCAG normal text: Fail
Contrast with black12.62:1WCAG normal text: AAA
Greyscale equivalent#B4B4B4
Inverted#EA2119

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#CDD3E7no red cones; affects about 1% of men; ΔE 42.8 from the original
Deuteranopia#B3C1E7no green cones; the most common form, about 1% of men; ΔE 43.9 from the original
Tritanopia#00E7E0no blue cones; rare, and affects men and women equally; ΔE 9.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text1.66:1WCAG large text: Fail
Contrast with black, large text12.62:1WCAG large text: AAA

Named colours

Dark turquoise · ΔE 6.3Medium turquoise · ΔE 9.5Turquoise · ΔE 13Aqua · ΔE 13.1Cyan · ΔE 13.1Light seagreen · ΔE 18.3
Nearest named CSS colourDark turquoise (#00CED1)ΔE 6.26, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#E61D15
Analogous#15E686, #1575E6
Triadic#E615DE, #DEE615
Split complementary#E61575, #E68615
Tetradic#8615E6, #E61D15, #75E615

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#CDF9FA
Lighter +30%#9EF3F6
Lighter +20%#6FEDF2
Lighter +10%#40E7EE
Darker −10%#11B1B7
Darker −20%#0C8489
Darker −30%#08575A
Darker −40%#042A2B
More saturated +25%#00F1FB
Less saturated −25%#34C1C7

Channel breakdown

R21
G222
B230
Red21 (8.2%)
Green222 (87.1%)
Blue230 (90.2%)
Hue182.3°
Saturation (HSL)83.27%
Lightness49.22%
Dominant channelBlue
Hex per channelR 15 · G DE · B E6

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Every value on this page was computed from “15dee6” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.