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Recognised as Colour

#5BBBDB

  • #5BBBDB
  • Cyan
  • Dark
  • Nearest: Sky blue

#5BBBDB is a cyan with RGB values 91, 187, 219 and HSL 195°, 64%, 61%. It is a dark colour, so black text on it reaches 9.6:1 contrast (AAA for normal text). The nearest named colour is Sky blue.

Colour values

#5BBBDB#5BBBDB
HEX#5BBBDB
RGBrgb(91, 187, 219)
RGB (0–1)0.3569, 0.7333, 0.8588
RGB percentages35.7%, 73.3%, 85.9%
HSLhsl(195, 64%, 60.8%)
HSV / HSBhsv(195, 58.4%, 85.9%)
CMYK58.4%, 14.6%, 0%, 14.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,011,867
CSS custom property--colour: #5BBBDB;

Brightness & contrast

Relative luminance0.42879WCAG 2.x, 0 is black and 1 is white
Perceived brightness168.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 9.58:1
Contrast with white2.19:1WCAG normal text: Fail
Contrast with black9.58:1WCAG normal text: AAA
Greyscale equivalent#A9A9A9
Inverted#A44424

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#A8B7DDno red cones; affects about 1% of men; ΔE 22.7 from the original
Deuteranopia#96A9DBno green cones; the most common form, about 1% of men; ΔE 24.3 from the original
Tritanopia#00C5C5no blue cones; rare, and affects men and women equally; ΔE 24.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.19:1WCAG large text: Fail
Contrast with black, large text9.58:1WCAG large text: AAA

Named colours

Sky blue · ΔE 9.4Light skyblue · ΔE 12.3Deep skyblue · ΔE 18Light blue · ΔE 19.8Cadetblue · ΔE 20Light steelblue · ΔE 21.3
Nearest named CSS colourSky blue (#87CEEB)ΔE 9.43, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#DB7B5B
Analogous#5BDBBB, #5B7BDB
Triadic#DB5BBB, #BBDB5B
Split complementary#DB5B7B, #DBBB5B
Tetradic#BB5BDB, #DB7B5B, #7BDB5B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#D8EFF7
Lighter +20%#AFDEED
Lighter +10%#85CCE4
Darker −10%#31AAD2
Darker −20%#2589AB
Darker −30%#1C6881
Darker −40%#134657
More saturated +25%#42C7F4
Less saturated −25%#74AEC2

Channel breakdown

R91
G187
B219
Red91 (35.7%)
Green187 (73.3%)
Blue219 (85.9%)
Hue195°
Saturation (HSL)64%
Lightness60.78%
Dominant channelBlue
Hex per channelR 5B · G BB · B DB

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Every value on this page was computed from “5bbbdb” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.