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Recognised as Colour

#3F75EB

  • #3F75EB
  • Blue
  • Dark
  • Nearest: Royal blue

#3F75EB is a blue with RGB values 63, 117, 235 and HSL 221°, 81%, 58%. It is a dark colour, so black text on it reaches 5:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#3F75EB#3F75EB
HEX#3F75EB
RGBrgb(63, 117, 235)
RGB (0–1)0.2471, 0.4588, 0.9216
RGB percentages24.7%, 45.9%, 92.2%
HSLhsl(221.2, 81.1%, 58.4%)
HSV / HSBhsv(221.2, 73.2%, 92.2%)
CMYK73.2%, 50.2%, 0%, 7.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,158,955
CSS custom property--colour: #3F75EB;

Brightness & contrast

Relative luminance0.19777WCAG 2.x, 0 is black and 1 is white
Perceived brightness124.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.96:1
Contrast with white4.24:1WCAG normal text: Fail
Contrast with black4.96:1WCAG normal text: AA
Greyscale equivalent#727272
Inverted#C08A14

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#2B83EFno red cones; affects about 1% of men; ΔE 10.5 from the original
Deuteranopia#0073E9no green cones; the most common form, about 1% of men; ΔE 4.6 from the original
Tritanopia#0091A5no blue cones; rare, and affects men and women equally; ΔE 65.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.24:1WCAG large text: AA
Contrast with black, large text4.96:1WCAG large text: AAA

Named colours

Royal blue · ΔE 5.6Dodgerblue · ΔE 14.5Slate blue · ΔE 16.8Medium slateblue · ΔE 19Medium purple · ΔE 21.1Cornflower blue · ΔE 22.6
Nearest named CSS colourRoyal blue (#4169E1)ΔE 5.64, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#EBB53F
Analogous#3FCBEB, #5F3FEB
Triadic#EB3F75, #75EB3F
Split complementary#EB5F3F, #CBEB3F
Tetradic#EB3FCB, #EBB53F, #3FEB5F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#F8FAFE
Lighter +30%#CAD9F9
Lighter +20%#9BB7F5
Lighter +10%#6D96F0
Darker −10%#1756E0
Darker −20%#1244B2
Darker −30%#0E3383
Darker −40%#092155
More saturated +25%#2B6EFF
Less saturated −25%#597FD1

Channel breakdown

R63
G117
B235
Red63 (24.7%)
Green117 (45.9%)
Blue235 (92.2%)
Hue221.16°
Saturation (HSL)81.13%
Lightness58.43%
Dominant channelBlue
Hex per channelR 3F · G 75 · B EB

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Every value on this page was computed from “3f75eb” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.