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Recognised as Colour

#40CFF5

  • #40CFF5
  • Cyan
  • Light
  • Nearest: Sky blue

#40CFF5 is a cyan with RGB values 64, 207, 245 and HSL 193°, 90%, 61%. It is a light colour, so black text on it reaches 11.5:1 contrast (AAA for normal text). The nearest named colour is Sky blue.

Colour values

#40CFF5#40CFF5
HEX#40CFF5
RGBrgb(64, 207, 245)
RGB (0–1)0.251, 0.8118, 0.9608
RGB percentages25.1%, 81.2%, 96.1%
HSLhsl(192.6, 90%, 60.6%)
HSV / HSBhsv(192.6, 73.9%, 96.1%)
CMYK73.9%, 15.5%, 0%, 3.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,247,541
CSS custom property--colour: #40CFF5;

Brightness & contrast

Relative luminance0.52308WCAG 2.x, 0 is black and 1 is white
Perceived brightness182.3 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 11.46:1
Contrast with white1.83:1WCAG normal text: Fail
Contrast with black11.46:1WCAG normal text: AAA
Greyscale equivalent#B3B3B3
Inverted#BF300A

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#B8C9F7no red cones; affects about 1% of men; ΔE 30.1 from the original
Deuteranopia#9FB8F5no green cones; the most common form, about 1% of men; ΔE 31.5 from the original
Tritanopia#00DBDBno blue cones; rare, and affects men and women equally; ΔE 24.4 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 text11.46:1WCAG large text: AAA

Named colours

Sky blue · ΔE 13.5Light skyblue · ΔE 14.7Deep skyblue · ΔE 15.9Dark turquoise · ΔE 21.8Light blue · ΔE 24Medium turquoise · ΔE 24.3
Nearest named CSS colourSky blue (#87CEEB)ΔE 13.47, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#F56640
Analogous#40F5C0, #4075F5
Triadic#F540CF, #CFF540
Split complementary#F54075, #F5C040
Tetradic#C040F5, #F56640, #75F540

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#D1F4FD
Lighter +20%#A1E7FA
Lighter +10%#70DBF8
Darker −10%#10C3F2
Darker −20%#0A9EC5
Darker −30%#087794
Darker −40%#055064
More saturated +25%#36D5FF
Less saturated −25%#59C0DC

Channel breakdown

R64
G207
B245
Red64 (25.1%)
Green207 (81.2%)
Blue245 (96.1%)
Hue192.6°
Saturation (HSL)90.05%
Lightness60.59%
Dominant channelBlue
Hex per channelR 40 · G CF · B F5

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Every value on this page was computed from “40cff5” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.