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Colour

#4583BB

  • #4583BB
  • Blue
  • Dark
  • Nearest: Steel blue

#4583BB is a blue with RGB values 69, 131, 187 and HSL 208°, 46%, 50%. It is a dark colour, so black text on it reaches 5.2:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#4583BB#4583BB
HEX#4583BB
RGBrgb(69, 131, 187)
RGB (0–1)0.2706, 0.5137, 0.7333
RGB percentages27.1%, 51.4%, 73.3%
HSLhsl(208.5, 46.5%, 50.2%)
HSV / HSBhsv(208.5, 63.1%, 73.3%)
CMYK63.1%, 29.9%, 0%, 26.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,555,707
CSS custom property--colour: #4583BB;

Brightness & contrast

Relative luminance0.21086WCAG 2.x, 0 is black and 1 is white
Perceived brightness124.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.22:1
Contrast with white4.03:1WCAG normal text: Fail
Contrast with black5.22:1WCAG normal text: AA
Greyscale equivalent#7A7A7A
Inverted#BA7C44

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#6B85BDno red cones; affects about 1% of men; ΔE 9 from the original
Deuteranopia#5B79BAno green cones; the most common form, about 1% of men; ΔE 10.7 from the original
Tritanopia#009097no blue cones; rare, and affects men and women equally; ΔE 34.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text4.03:1WCAG large text: AA
Contrast with black, large text5.22:1WCAG large text: AAA

Named colours

Steel blue · ΔE 3.5Cornflower blue · ΔE 20.4Light slate grey · ΔE 24.4Slate grey · ΔE 24.7Deep skyblue · ΔE 25.7Light skyblue · ΔE 28.8
Nearest named CSS colourSteel blue (#4682B4)ΔE 3.54, a close match
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BB7D45
Analogous#45BBB8, #4548BB
Triadic#BB4583, #83BB45
Split complementary#BB4548, #BBB845
Tetradic#B845BB, #BB7D45, #48BB45

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#DAE7F2
Lighter +30%#B5CEE4
Lighter +20%#90B5D6
Lighter +10%#6A9CC9
Darker −10%#376996
Darker −20%#294F71
Darker −30%#1C354B
Darker −40%#0E1B26
More saturated +25%#2585DB
Less saturated −25%#65819B

Channel breakdown

R69
G131
B187
Red69 (27.1%)
Green131 (51.4%)
Blue187 (73.3%)
Hue208.47°
Saturation (HSL)46.46%
Lightness50.2%
Dominant channelBlue
Hex per channelR 45 · G 83 · B BB

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Every value on this page was computed from “4583bb” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.