Colour

#37DAFF

#37DAFF
Cyan
Light
Nearest: Sky blue

#37DAFF is a cyan with RGB values 55, 218, 255 and HSL 191°, 100%, 61%. It is a light colour, so black text on it reaches 12.6:1 contrast (AAA for normal text). The nearest named colour is Sky blue.

Colour values

#37DAFF#37DAFF

HEX#37DAFF

RGBrgb(55, 218, 255)

RGB (0–1)0.2157, 0.8549, 1

RGB percentages21.6%, 85.5%, 100%

HSLhsl(191.1, 100%, 60.8%)

HSV / HSBhsv(191.1, 78.4%, 100%)

CMYK78.4%, 14.5%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer3,660,543

CSS custom property--colour: #37DAFF;

Brightness & contrast

Relative luminance0.58175WCAG 2.x, 0 is black and 1 is white

Perceived brightness190.3 of 255ITU-R BT.601 weighting

Light or darkLight

Best text colour on this backgroundBlackcontrast 12.64:1

Contrast with white1.66:1WCAG normal text: Fail

Contrast with black12.64:1WCAG normal text: AAA

Greyscale equivalent#BABABA

Inverted#C82500

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#C2D3FFno red cones; affects about 1% of men; ΔE 33 from the original

Deuteranopia#A8C0FFno green cones; the most common form, about 1% of men; ΔE 35.3 from the original

Tritanopia#00E7E6no blue cones; rare, and affects men and women equally; ΔE 23.7 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 text12.64:1WCAG large text: AAA

Named colours

Sky blue · ΔE 16.2 Light skyblue · ΔE 17.8 Deep skyblue · ΔE 18.8 Dark turquoise · ΔE 20.6 Medium turquoise · ΔE 23.4 Light blue · ΔE 25.6

Nearest named CSS colourSky blue (#87CEEB)ΔE 16.19, a distinctly different colour

Hue familycyan

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#FF5C37

Analogous#37FFC0, #3776FF

Triadic#FF37DA, #DAFF37

Split complementary#FF3776, #FFC037

Tetradic#C037FF, #FF5C37, #76FF37

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#FFFFFF

Lighter +30%#D0F6FF

Lighter +20%#9DEDFF

Lighter +10%#6AE3FF

Darker −10%#04D1FF

Darker −20%#00AAD0

Darker −30%#00809D

Darker −40%#00566A

More saturated +25%#37DAFF

Less saturated −25%#50CAE6

Channel breakdown

R55

G218

B255

Red55 (21.6%)

Green218 (85.5%)

Blue255 (100%)

Hue191.1°

Saturation (HSL)100%

Lightness60.78%

Dominant channelBlue

Hex per channelR 37 · G DA · B FF

Keep nerding

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#37DAFF

Colour values

Brightness & contrast

Colour vision & accessibility

Named colours

Colour harmonies

Tints, shades & saturation

Channel breakdown

Keep nerding

Harmonies

Lighter and darker

Similar named colours

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