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Recognised as Colour

#3F7FDC

  • #3F7FDC
  • Blue
  • Dark
  • Nearest: Cornflower blue

#3F7FDC is a blue with RGB values 63, 127, 220 and HSL 216°, 69%, 55%. It is a dark colour, so black text on it reaches 5.3:1 contrast (AA for normal text). The nearest named colour is Cornflower blue.

Colour values

#3F7FDC#3F7FDC
HEX#3F7FDC
RGBrgb(63, 127, 220)
RGB (0–1)0.2471, 0.498, 0.8627
RGB percentages24.7%, 49.8%, 86.3%
HSLhsl(215.5, 69.2%, 55.5%)
HSV / HSBhsv(215.5, 71.4%, 86.3%)
CMYK71.4%, 42.3%, 0%, 13.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,161,500
CSS custom property--colour: #3F7FDC;

Brightness & contrast

Relative luminance0.21403WCAG 2.x, 0 is black and 1 is white
Perceived brightness127.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.28:1
Contrast with white3.98:1WCAG normal text: Fail
Contrast with black5.28:1WCAG normal text: AA
Greyscale equivalent#787878
Inverted#C08023

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5287E0no red cones; affects about 1% of men; ΔE 4.3 from the original
Deuteranopia#3779DAno green cones; the most common form, about 1% of men; ΔE 3.6 from the original
Tritanopia#0095A3no blue cones; rare, and affects men and women equally; ΔE 53 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.98:1WCAG large text: AA
Contrast with black, large text5.28:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 9.6Dodgerblue · ΔE 11.6Royal blue · ΔE 20.5Steel blue · ΔE 25.8Medium purple · ΔE 26.6Slate blue · ΔE 27.1
Nearest named CSS colourCornflower blue (#6495ED)ΔE 9.59, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#DC9C3F
Analogous#3FCDDC, #4E3FDC
Triadic#DC3F7F, #7FDC3F
Split complementary#DC4E3F, #CEDC3F
Tetradic#DC3FCD, #DC9C3F, #3FDC4E

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#ECF2FB
Lighter +30%#C0D5F4
Lighter +20%#95B9EC
Lighter +10%#6A9CE4
Darker −10%#2465C4
Darker −20%#1C4F99
Darker −30%#14396E
Darker −40%#0C2243
More saturated +25%#237AF8
Less saturated −25%#5B84C0

Channel breakdown

R63
G127
B220
Red63 (24.7%)
Green127 (49.8%)
Blue220 (86.3%)
Hue215.54°
Saturation (HSL)69.16%
Lightness55.49%
Dominant channelBlue
Hex per channelR 3F · G 7F · B DC

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Every value on this page was computed from “3f7fdc” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.