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Recognised as Colour

#15D4F9

  • #15D4F9
  • Cyan
  • Light
  • Nearest: Sky blue

#15D4F9 is a cyan with RGB values 21, 212, 249 and HSL 190°, 95%, 53%. It is a light colour, so black text on it reaches 11.8:1 contrast (AAA for normal text). The nearest named colour is Sky blue.

Colour values

#15D4F9#15D4F9
HEX#15D4F9
RGBrgb(21, 212, 249)
RGB (0–1)0.0824, 0.8314, 0.9765
RGB percentages8.2%, 83.1%, 97.6%
HSLhsl(189.7, 95%, 52.9%)
HSV / HSBhsv(189.7, 91.6%, 97.6%)
CMYK91.6%, 14.9%, 0%, 2.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,430,777
CSS custom property--colour: #15D4F9;

Brightness & contrast

Relative luminance0.54086WCAG 2.x, 0 is black and 1 is white
Perceived brightness183.3 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 11.82:1
Contrast with white1.78:1WCAG normal text: Fail
Contrast with black11.82:1WCAG normal text: AAA
Greyscale equivalent#AEAEAE
Inverted#EA2B06

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#BCCDFBno red cones; affects about 1% of men; ΔE 34.5 from the original
Deuteranopia#A0BAF9no green cones; the most common form, about 1% of men; ΔE 36.1 from the original
Tritanopia#00E1E0no blue cones; rare, and affects men and women equally; ΔE 22.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text1.78:1WCAG large text: Fail
Contrast with black, large text11.82:1WCAG large text: AAA

Named colours

Sky blue · ΔE 17.3Deep skyblue · ΔE 18.4Light skyblue · ΔE 19Dark turquoise · ΔE 19.8Medium turquoise · ΔE 23.1Light blue · ΔE 27
Nearest named CSS colourSky blue (#87CEEB)ΔE 17.33, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#F93A15
Analogous#15F9AC, #1562F9
Triadic#F915D4, #D4F915
Split complementary#F91562, #F9AC15
Tetradic#AC15F9, #F93A15, #62F915

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#DCF9FE
Lighter +30%#AAEFFD
Lighter +20%#78E6FC
Lighter +10%#47DDFA
Darker −10%#05B4D6
Darker −20%#048AA4
Darker −30%#036072
Darker −40%#023640
More saturated +25%#0FD8FF
Less saturated −25%#33C0DB

Channel breakdown

R21
G212
B249
Red21 (8.2%)
Green212 (83.1%)
Blue249 (97.6%)
Hue189.74°
Saturation (HSL)95%
Lightness52.94%
Dominant channelBlue
Hex per channelR 15 · G D4 · B F9

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Every value on this page was computed from “15d4f9” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.