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Recognised as Colour

#566B89

  • #566B89
  • Blue
  • Dark
  • Nearest: Slate grey

#566B89 is a blue with RGB values 86, 107, 137 and HSL 215°, 23%, 44%. It is a dark colour, so white text on it reaches 5.4:1 contrast (AA for normal text). The nearest named colour is Slate grey.

Colour values

#566B89#566B89
HEX#566B89
RGBrgb(86, 107, 137)
RGB (0–1)0.3373, 0.4196, 0.5373
RGB percentages33.7%, 42%, 53.7%
HSLhsl(215.3, 22.9%, 43.7%)
HSV / HSBhsv(215.3, 37.2%, 53.7%)
CMYK37.2%, 21.9%, 0%, 46.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,663,625
CSS custom property--colour: #566B89;

Brightness & contrast

Relative luminance0.143WCAG 2.x, 0 is black and 1 is white
Perceived brightness105.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.44:1
Contrast with white5.44:1WCAG normal text: AA
Contrast with black3.86:1WCAG normal text: Fail
Greyscale equivalent#696969
Inverted#A99476

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#606C8Ano red cones; affects about 1% of men; ΔE 3.1 from the original
Deuteranopia#5B6788no green cones; the most common form, about 1% of men; ΔE 3.8 from the original
Tritanopia#467175no blue cones; rare, and affects men and women equally; ΔE 18.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text5.44:1WCAG large text: AAA
Contrast with black, large text3.86:1WCAG large text: AA

Named colours

Slate grey · ΔE 12Light slate grey · ΔE 14Steel blue · ΔE 15.9Dim grey · ΔE 19Gray · ΔE 21Dark slate grey · ΔE 23.5
Nearest named CSS colourSlate grey (#708090)ΔE 11.98, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#897456
Analogous#568589, #5A5689
Triadic#89566B, #6B8956
Split complementary#895B56, #848956
Tetradic#895685, #897456, #56895B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#CCD4DF
Lighter +30%#ADB9CB
Lighter +20%#8D9FB8
Lighter +10%#6E84A4
Darker −10%#42536A
Darker −20%#2F3A4A
Darker −30%#1B222B
Darker −40%#07090C
More saturated +25%#3A66A5
Less saturated −25%#707070

Channel breakdown

R86
G107
B137
Red86 (33.7%)
Green107 (42%)
Blue137 (53.7%)
Hue215.29°
Saturation (HSL)22.87%
Lightness43.73%
Dominant channelBlue
Hex per channelR 56 · G 6B · B 89

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Every value on this page was computed from “566b89” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.