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Recognised as Colour

#3F70D5

  • #3F70D5
  • Blue
  • Dark
  • Nearest: Royal blue

#3F70D5 is a blue with RGB values 63, 112, 213 and HSL 220°, 64%, 54%. It is a dark colour, so white text on it reaches 4.7:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#3F70D5#3F70D5
HEX#3F70D5
RGBrgb(63, 112, 213)
RGB (0–1)0.2471, 0.4392, 0.8353
RGB percentages24.7%, 43.9%, 83.5%
HSLhsl(220.4, 64.1%, 54.1%)
HSV / HSBhsv(220.4, 70.4%, 83.5%)
CMYK70.4%, 47.4%, 0%, 16.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,157,653
CSS custom property--colour: #3F70D5;

Brightness & contrast

Relative luminance0.17449WCAG 2.x, 0 is black and 1 is white
Perceived brightness117.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 4.68:1
Contrast with white4.68:1WCAG normal text: AA
Contrast with black4.49:1WCAG normal text: Fail
Greyscale equivalent#6D6D6D
Inverted#C08F2A

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3A7BD9no red cones; affects about 1% of men; ΔE 7.3 from the original
Deuteranopia#126ED3no green cones; the most common form, about 1% of men; ΔE 4.6 from the original
Tritanopia#008898no blue cones; rare, and affects men and women equally; ΔE 57.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.68:1WCAG large text: AAA
Contrast with black, large text4.49:1WCAG large text: AA

Named colours

Royal blue · ΔE 12.3Dodgerblue · ΔE 14.4Cornflower blue · ΔE 17.1Slate blue · ΔE 19.1Medium purple · ΔE 21.6Dark slateblue · ΔE 24.9
Nearest named CSS colourRoyal blue (#4169E1)ΔE 12.35, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#D5A43F
Analogous#3FBBD5, #593FD5
Triadic#D53F70, #70D53F
Split complementary#D5593F, #BBD53F
Tetradic#D53FBB, #D5A43F, #3FD559

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E6EDFA
Lighter +30%#BDCEF0
Lighter +20%#93AEE7
Lighter +10%#698FDE
Darker −10%#2858B9
Darker −20%#1F448F
Darker −30%#163065
Darker −40%#0D1C3B
More saturated +25%#2266F2
Less saturated −25%#5C7AB8

Channel breakdown

R63
G112
B213
Red63 (24.7%)
Green112 (43.9%)
Blue213 (83.5%)
Hue220.4°
Saturation (HSL)64.1%
Lightness54.12%
Dominant channelBlue
Hex per channelR 3F · G 70 · B D5

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Every value on this page was computed from “3f70d5” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.