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Recognised as Colour

#5B78A4

  • #5B78A4
  • Blue
  • Dark
  • Nearest: Steel blue

#5B78A4 is a blue with RGB values 91, 120, 164 and HSL 216°, 29%, 50%. It is a dark colour, so black text on it reaches 4.7:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#5B78A4#5B78A4
HEX#5B78A4
RGBrgb(91, 120, 164)
RGB (0–1)0.3569, 0.4706, 0.6431
RGB percentages35.7%, 47.1%, 64.3%
HSLhsl(216.2, 28.6%, 50%)
HSV / HSBhsv(216.2, 44.5%, 64.3%)
CMYK44.5%, 26.8%, 0%, 35.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,994,660
CSS custom property--colour: #5B78A4;

Brightness & contrast

Relative luminance0.18337WCAG 2.x, 0 is black and 1 is white
Perceived brightness118.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.67:1
Contrast with white4.5:1WCAG normal text: Fail
Contrast with black4.67:1WCAG normal text: AA
Greyscale equivalent#757575
Inverted#A4875B

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#687BA6no red cones; affects about 1% of men; ΔE 3.4 from the original
Deuteranopia#5F74A3no green cones; the most common form, about 1% of men; ΔE 3.4 from the original
Tritanopia#408287no blue cones; rare, and affects men and women equally; ΔE 27.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text4.5:1WCAG large text: AA
Contrast with black, large text4.67:1WCAG large text: AAA

Named colours

Steel blue · ΔE 8.2Slate grey · ΔE 17Light slate grey · ΔE 17.3Cornflower blue · ΔE 26.6Gray · ΔE 27.1Dim grey · ΔE 27.4
Nearest named CSS colourSteel blue (#4682B4)ΔE 8.23, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A4875B
Analogous#5B9DA4, #625BA4
Triadic#A45B78, #78A45B
Split complementary#A4625B, #9DA45B
Tetradic#A45B9D, #A4875B, #5BA462

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#DEE4ED
Lighter +30%#BDC9DB
Lighter +20%#9DAEC8
Lighter +10%#7C93B6
Darker −10%#496083
Darker −20%#374862
Darker −30%#243042
Darker −40%#121821
More saturated +25%#3B71C4
Less saturated −25%#7B7F84

Channel breakdown

R91
G120
B164
Red91 (35.7%)
Green120 (47.1%)
Blue164 (64.3%)
Hue216.16°
Saturation (HSL)28.63%
Lightness50%
Dominant channelBlue
Hex per channelR 5B · G 78 · B A4

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Every value on this page was computed from “5b78a4” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.