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Recognised as Colour

#37B8DF

  • #37B8DF
  • Cyan
  • Dark
  • Nearest: Deep skyblue

#37B8DF is a cyan with RGB values 55, 184, 223 and HSL 194°, 72%, 55%. It is a dark colour, so black text on it reaches 9.1:1 contrast (AAA for normal text). The nearest named colour is Deep skyblue.

Colour values

#37B8DF#37B8DF
HEX#37B8DF
RGBrgb(55, 184, 223)
RGB (0–1)0.2157, 0.7216, 0.8745
RGB percentages21.6%, 72.2%, 87.5%
HSLhsl(193.9, 72.4%, 54.5%)
HSV / HSBhsv(193.9, 75.3%, 87.5%)
CMYK75.3%, 17.5%, 0%, 12.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,651,807
CSS custom property--colour: #37B8DF;

Brightness & contrast

Relative luminance0.40421WCAG 2.x, 0 is black and 1 is white
Perceived brightness162.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 9.08:1
Contrast with white2.31:1WCAG normal text: Fail
Contrast with black9.08:1WCAG normal text: AAA
Greyscale equivalent#9F9F9F
Inverted#C84720

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#A2B4E1no red cones; affects about 1% of men; ΔE 26.3 from the original
Deuteranopia#8BA3DFno green cones; the most common form, about 1% of men; ΔE 28.4 from the original
Tritanopia#00C4C5no blue cones; rare, and affects men and women equally; ΔE 24.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.31:1WCAG large text: Fail
Contrast with black, large text9.08:1WCAG large text: AAA

Named colours

Deep skyblue · ΔE 14Sky blue · ΔE 14.3Light skyblue · ΔE 14.8Cadetblue · ΔE 23.8Steel blue · ΔE 24.9Dark turquoise · ΔE 24.9
Nearest named CSS colourDeep skyblue (#00BFFF)ΔE 13.97, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#DF5E37
Analogous#37DFB2, #3764DF
Triadic#DF37B8, #B8DF37
Split complementary#DF3764, #DFB237
Tetradic#B237DF, #DF5E37, #64DF37

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E7F6FB
Lighter +30%#BBE7F4
Lighter +20%#8FD7ED
Lighter +10%#63C8E6
Darker −10%#1F9EC4
Darker −20%#187A98
Darker −30%#11576C
Darker −40%#0A3340
More saturated +25%#1AC8FC
Less saturated −25%#54A8C2

Channel breakdown

R55
G184
B223
Red55 (21.6%)
Green184 (72.2%)
Blue223 (87.5%)
Hue193.93°
Saturation (HSL)72.41%
Lightness54.51%
Dominant channelBlue
Hex per channelR 37 · G B8 · B DF

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Every value on this page was computed from “37b8df” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.