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Recognised as Colour

#576B87

  • #576B87
  • Blue
  • Dark
  • Nearest: Slate grey

#576B87 is a blue with RGB values 87, 107, 135 and HSL 215°, 22%, 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

#576B87#576B87
HEX#576B87
RGBrgb(87, 107, 135)
RGB (0–1)0.3412, 0.4196, 0.5294
RGB percentages34.1%, 42%, 52.9%
HSLhsl(215, 21.6%, 43.5%)
HSV / HSBhsv(215, 35.6%, 52.9%)
CMYK35.6%, 20.7%, 0%, 47.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,729,159
CSS custom property--colour: #576B87;

Brightness & contrast

Relative luminance0.14291WCAG 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#A89478

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#616C88no red cones; affects about 1% of men; ΔE 3.2 from the original
Deuteranopia#5C6886no green cones; the most common form, about 1% of men; ΔE 3.2 from the original
Tritanopia#487174no blue cones; rare, and affects men and women equally; ΔE 17.7 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 11.1Light slate grey · ΔE 13.3Steel blue · ΔE 16.8Dim grey · ΔE 17.8Gray · ΔE 20Dark slate grey · ΔE 22.6
Nearest named CSS colourSlate grey (#708090)ΔE 11.13, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#877357
Analogous#578387, #5B5787
Triadic#87576B, #6B8757
Split complementary#875B57, #838757
Tetradic#875783, #877357, #57875B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#CCD3DE
Lighter +30%#ADB9CA
Lighter +20%#8E9FB6
Lighter +10%#6F84A2
Darker −10%#435268
Darker −20%#2F3A49
Darker −30%#1B212A
Darker −40%#07090B
More saturated +25%#3B66A3
Less saturated −25%#6F6F6F

Channel breakdown

R87
G107
B135
Red87 (34.1%)
Green107 (42%)
Blue135 (52.9%)
Hue215°
Saturation (HSL)21.62%
Lightness43.53%
Dominant channelBlue
Hex per channelR 57 · G 6B · B 87

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Every value on this page was computed from “576b87” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.