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Recognised as Colour

#3583B0

  • #3583B0
  • Blue
  • Dark
  • Nearest: Steel blue

#3583B0 is a blue with RGB values 53, 131, 176 and HSL 202°, 54%, 45%. It is a dark colour, so black text on it reaches 5:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#3583B0#3583B0
HEX#3583B0
RGBrgb(53, 131, 176)
RGB (0–1)0.2078, 0.5137, 0.6902
RGB percentages20.8%, 51.4%, 69%
HSLhsl(202, 53.7%, 44.9%)
HSV / HSBhsv(202, 69.9%, 69%)
CMYK69.9%, 25.6%, 0%, 31%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,507,120
CSS custom property--colour: #3583B0;

Brightness & contrast

Relative luminance0.20124WCAG 2.x, 0 is black and 1 is white
Perceived brightness120.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.02:1
Contrast with white4.18:1WCAG normal text: Fail
Contrast with black5.02:1WCAG normal text: AA
Greyscale equivalent#767676
Inverted#CA7C4F

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#6E83B2no red cones; affects about 1% of men; ΔE 14.1 from the original
Deuteranopia#5D77AFno green cones; the most common form, about 1% of men; ΔE 15.3 from the original
Tritanopia#008E92no blue cones; rare, and affects men and women equally; ΔE 28.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text4.18:1WCAG large text: AA
Contrast with black, large text5.02:1WCAG large text: AAA

Named colours

Steel blue · ΔE 5.2Light slate grey · ΔE 21.1Slate grey · ΔE 21.3Deep skyblue · ΔE 25.3Cadetblue · ΔE 27.2Light skyblue · ΔE 27.9
Nearest named CSS colourSteel blue (#4682B4)ΔE 5.16, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B06235
Analogous#35B0A0, #3545B0
Triadic#B03583, #83B035
Split complementary#B03545, #B0A035
Tetradic#A035B0, #B06235, #45B035

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C4DEED
Lighter +30%#9DC8E1
Lighter +20%#75B2D6
Lighter +10%#4E9DCA
Darker −10%#296689
Darker −20%#1D4962
Darker −30%#122B3A
Darker −40%#060E13
More saturated +25%#188BCD
Less saturated −25%#527B93

Channel breakdown

R53
G131
B176
Red53 (20.8%)
Green131 (51.4%)
Blue176 (69%)
Hue201.95°
Saturation (HSL)53.71%
Lightness44.9%
Dominant channelBlue
Hex per channelR 35 · G 83 · B B0

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Every value on this page was computed from “3583b0” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.