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Recognised as Colour

#3F7ED9

  • #3F7ED9
  • Blue
  • Dark
  • Nearest: Cornflower blue

#3F7ED9 is a blue with RGB values 63, 126, 217 and HSL 215°, 67%, 55%. It is a dark colour, so black text on it reaches 5.2:1 contrast (AA for normal text). The nearest named colour is Cornflower blue.

Colour values

#3F7ED9#3F7ED9
HEX#3F7ED9
RGBrgb(63, 126, 217)
RGB (0–1)0.2471, 0.4941, 0.851
RGB percentages24.7%, 49.4%, 85.1%
HSLhsl(215.5, 67%, 54.9%)
HSV / HSBhsv(215.5, 71%, 85.1%)
CMYK71%, 41.9%, 0%, 14.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,161,241
CSS custom property--colour: #3F7ED9;

Brightness & contrast

Relative luminance0.20988WCAG 2.x, 0 is black and 1 is white
Perceived brightness126 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.2:1
Contrast with white4.04:1WCAG normal text: Fail
Contrast with black5.2:1WCAG normal text: AA
Greyscale equivalent#777777
Inverted#C08126

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5286DDno red cones; affects about 1% of men; ΔE 4.4 from the original
Deuteranopia#3878D7no green cones; the most common form, about 1% of men; ΔE 3.6 from the original
Tritanopia#0093A1no blue cones; rare, and affects men and women equally; ΔE 51.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.04:1WCAG large text: AA
Contrast with black, large text5.2:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 9.6Dodgerblue · ΔE 12.6Royal blue · ΔE 21.3Steel blue · ΔE 24.8Medium purple · ΔE 27Slate blue · ΔE 27.6
Nearest named CSS colourCornflower blue (#6495ED)ΔE 9.58, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#D99A3F
Analogous#3FCBD9, #4D3FD9
Triadic#D93F7E, #7ED93F
Split complementary#D94D3F, #CBD93F
Tetradic#D93FCB, #D99A3F, #3FD94D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E9F0FB
Lighter +30%#BFD4F2
Lighter +20%#94B7EA
Lighter +10%#6A9BE1
Darker −10%#2665BF
Darker −20%#1D4E95
Darker −30%#15386A
Darker −40%#0D213F
More saturated +25%#2279F6
Less saturated −25%#5C83BC

Channel breakdown

R63
G126
B217
Red63 (24.7%)
Green126 (49.4%)
Blue217 (85.1%)
Hue215.45°
Saturation (HSL)66.96%
Lightness54.9%
Dominant channelBlue
Hex per channelR 3F · G 7E · B D9

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Every value on this page was computed from “3f7ed9” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.