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Recognised as Colour

#407DDD

  • #407DDD
  • Blue
  • Dark
  • Nearest: Cornflower blue

#407DDD is a blue with RGB values 64, 125, 221 and HSL 217°, 70%, 56%. 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

#407DDD#407DDD
HEX#407DDD
RGBrgb(64, 125, 221)
RGB (0–1)0.251, 0.4902, 0.8667
RGB percentages25.1%, 49%, 86.7%
HSLhsl(216.7, 69.8%, 55.9%)
HSV / HSBhsv(216.7, 71%, 86.7%)
CMYK71%, 43.4%, 0%, 13.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,226,525
CSS custom property--colour: #407DDD;

Brightness & contrast

Relative luminance0.20978WCAG 2.x, 0 is black and 1 is white
Perceived brightness126.4 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#BF8222

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#4E86E1no red cones; affects about 1% of men; ΔE 4.8 from the original
Deuteranopia#3178DBno green cones; the most common form, about 1% of men; ΔE 3 from the original
Tritanopia#0093A2no blue cones; rare, and affects men and women equally; ΔE 54.4 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 10.9Dodgerblue · ΔE 11Royal blue · ΔE 18.3Medium purple · ΔE 25.1Slate blue · ΔE 25.2Steel blue · ΔE 27.9
Nearest named CSS colourCornflower blue (#6495ED)ΔE 10.94, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#DDA040
Analogous#40CBDD, #5240DD
Triadic#DD407D, #7DDD40
Split complementary#DD5240, #CBDD40
Tetradic#DD40CB, #DDA040, #40DD52

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#EDF3FC
Lighter +30%#C2D5F4
Lighter +20%#97B8EC
Lighter +10%#6B9AE5
Darker −10%#2363C7
Darker −20%#1C4D9B
Darker −30%#143870
Darker −40%#0C2245
More saturated +25%#2477F9
Less saturated −25%#5C83C1

Channel breakdown

R64
G125
B221
Red64 (25.1%)
Green125 (49%)
Blue221 (86.7%)
Hue216.69°
Saturation (HSL)69.78%
Lightness55.88%
Dominant channelBlue
Hex per channelR 40 · G 7D · B DD

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Every value on this page was computed from “407ddd” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.