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Recognised as Colour

#3387BD

  • #3387BD
  • Blue
  • Dark
  • Nearest: Steel blue

#3387BD is a blue with RGB values 51, 135, 189 and HSL 203°, 58%, 47%. It is a dark colour, so black text on it reaches 5.3:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#3387BD#3387BD
HEX#3387BD
RGBrgb(51, 135, 189)
RGB (0–1)0.2, 0.5294, 0.7412
RGB percentages20%, 52.9%, 74.1%
HSLhsl(203.5, 57.5%, 47.1%)
HSV / HSBhsv(203.5, 73%, 74.1%)
CMYK73%, 28.6%, 0%, 25.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,377,085
CSS custom property--colour: #3387BD;

Brightness & contrast

Relative luminance0.21706WCAG 2.x, 0 is black and 1 is white
Perceived brightness124.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.34:1
Contrast with white3.93:1WCAG normal text: Fail
Contrast with black5.34:1WCAG normal text: AA
Greyscale equivalent#797979
Inverted#CC7842

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#6E88BFno red cones; affects about 1% of men; ΔE 13.1 from the original
Deuteranopia#5B7ABCno green cones; the most common form, about 1% of men; ΔE 15.3 from the original
Tritanopia#00949Ano blue cones; rare, and affects men and women equally; ΔE 32.6 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.93:1WCAG large text: AA
Contrast with black, large text5.34:1WCAG large text: AAA

Named colours

Steel blue · ΔE 4.6Deep skyblue · ΔE 22.8Cornflower blue · ΔE 23Light slate grey · ΔE 24.9Slate grey · ΔE 25.4Light skyblue · ΔE 27.2
Nearest named CSS colourSteel blue (#4682B4)ΔE 4.58, a close match
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BD6933
Analogous#33BDAE, #3342BD
Triadic#BD3387, #87BD33
Split complementary#BD3342, #BDAE33
Tetradic#AE33BD, #BD6933, #42BD33

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#CBE2F1
Lighter +30%#A3CCE6
Lighter +20%#7BB5DB
Lighter +10%#539FD0
Darker −10%#286A95
Darker −20%#1D4E6D
Darker −30%#123145
Darker −40%#08141C
More saturated +25%#158EDB
Less saturated −25%#51809F

Channel breakdown

R51
G135
B189
Red51 (20%)
Green135 (52.9%)
Blue189 (74.1%)
Hue203.48°
Saturation (HSL)57.5%
Lightness47.06%
Dominant channelBlue
Hex per channelR 33 · G 87 · B BD

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Every value on this page was computed from “3387bd” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.