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Recognised as Colour

#31BDFF

  • #31BDFF
  • Cyan
  • Dark
  • Nearest: Deep skyblue

#31BDFF is a cyan with RGB values 49, 189, 255 and HSL 199°, 100%, 60%. It is a dark colour, so black text on it reaches 9.9:1 contrast (AAA for normal text). The nearest named colour is Deep skyblue.

Colour values

#31BDFF#31BDFF
HEX#31BDFF
RGBrgb(49, 189, 255)
RGB (0–1)0.1922, 0.7412, 1
RGB percentages19.2%, 74.1%, 100%
HSLhsl(199.2, 100%, 59.6%)
HSV / HSBhsv(199.2, 80.8%, 100%)
CMYK80.8%, 25.9%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,259,903
CSS custom property--colour: #31BDFF;

Brightness & contrast

Relative luminance0.44268WCAG 2.x, 0 is black and 1 is white
Perceived brightness170.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 9.85:1
Contrast with white2.13:1WCAG normal text: Fail
Contrast with black9.85:1WCAG normal text: AAA
Greyscale equivalent#A4A4A4
Inverted#CE4200

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#9DBCFFno red cones; affects about 1% of men; ΔE 21.3 from the original
Deuteranopia#81A9FEno green cones; the most common form, about 1% of men; ΔE 23.9 from the original
Tritanopia#00CED4no blue cones; rare, and affects men and women equally; ΔE 37.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.13:1WCAG large text: Fail
Contrast with black, large text9.85:1WCAG large text: AAA

Named colours

Deep skyblue · ΔE 3.4Light skyblue · ΔE 16.4Sky blue · ΔE 22.5Steel blue · ΔE 24.8Cornflower blue · ΔE 26.7Light steelblue · ΔE 31
Nearest named CSS colourDeep skyblue (#00BFFF)ΔE 3.36, a close match
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FF7331
Analogous#31FFDA, #3156FF
Triadic#FF31BD, #BDFF31
Split complementary#FF3156, #FFDA31
Tetradic#DA31FF, #FF7331, #56FF31

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FDFEFF
Lighter +30%#CAEEFF
Lighter +20%#97DEFF
Lighter +10%#64CDFF
Darker −10%#00ACFD
Darker −20%#0089CA
Darker −30%#006797
Darker −40%#004464
More saturated +25%#31BDFF
Less saturated −25%#4BB4E5

Channel breakdown

R49
G189
B255
Red49 (19.2%)
Green189 (74.1%)
Blue255 (100%)
Hue199.22°
Saturation (HSL)100%
Lightness59.61%
Dominant channelBlue
Hex per channelR 31 · G BD · B FF

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Every value on this page was computed from “31bdff” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.