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Recognised as Colour

#3F8BD2

  • #3F8BD2
  • Blue
  • Dark
  • Nearest: Steel blue

#3F8BD2 is a blue with RGB values 63, 139, 210 and HSL 209°, 62%, 54%. It is a dark colour, so black text on it reaches 5.8:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#3F8BD2#3F8BD2
HEX#3F8BD2
RGBrgb(63, 139, 210)
RGB (0–1)0.2471, 0.5451, 0.8235
RGB percentages24.7%, 54.5%, 82.4%
HSLhsl(209, 62%, 53.5%)
HSV / HSBhsv(209, 70%, 82.4%)
CMYK70%, 33.8%, 0%, 17.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,164,562
CSS custom property--colour: #3F8BD2;

Brightness & contrast

Relative luminance0.24175WCAG 2.x, 0 is black and 1 is white
Perceived brightness132.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.84:1
Contrast with white3.6:1WCAG normal text: Fail
Contrast with black5.84:1WCAG normal text: AA
Greyscale equivalent#808080
Inverted#C0742D

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#6B8FD5no red cones; affects about 1% of men; ΔE 8.6 from the original
Deuteranopia#5681D1no green cones; the most common form, about 1% of men; ΔE 10.1 from the original
Tritanopia#009CA5no blue cones; rare, and affects men and women equally; ΔE 41.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.6:1WCAG large text: AA
Contrast with black, large text5.84:1WCAG large text: AAA

Named colours

Steel blue · ΔE 12.3Cornflower blue · ΔE 12.7Dodgerblue · ΔE 22.8Deep skyblue · ΔE 23.8Light skyblue · ΔE 29.7Light slate grey · ΔE 32.3
Nearest named CSS colourSteel blue (#4682B4)ΔE 12.34, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#D2863F
Analogous#3FD2CF, #3F42D2
Triadic#D23F8B, #8BD23F
Split complementary#D23F41, #D2D03F
Tetradic#D03FD2, #D2863F, #42D23F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E4EFF9
Lighter +30%#BBD6EF
Lighter +20%#92BDE5
Lighter +10%#68A4DC
Darker −10%#2A71B4
Darker −20%#20578B
Darker −30%#173D61
Darker −40%#0D2338
More saturated +25%#218CF0
Less saturated −25%#5D8AB4

Channel breakdown

R63
G139
B210
Red63 (24.7%)
Green139 (54.5%)
Blue210 (82.4%)
Hue208.98°
Saturation (HSL)62.03%
Lightness53.53%
Dominant channelBlue
Hex per channelR 3F · G 8B · B D2

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Every value on this page was computed from “3f8bd2” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.