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Recognised as Colour

#425DDA

  • #425DDA
  • Blue
  • Dark
  • Nearest: Royal blue

#425DDA is a blue with RGB values 66, 93, 218 and HSL 229°, 67%, 56%. It is a dark colour, so white text on it reaches 5.5:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#425DDA#425DDA
HEX#425DDA
RGBrgb(66, 93, 218)
RGB (0–1)0.2588, 0.3647, 0.8549
RGB percentages25.9%, 36.5%, 85.5%
HSLhsl(229.3, 67.3%, 55.7%)
HSV / HSBhsv(229.3, 69.7%, 85.5%)
CMYK69.7%, 57.3%, 0%, 14.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,349,402
CSS custom property--colour: #425DDA;

Brightness & contrast

Relative luminance0.14049WCAG 2.x, 0 is black and 1 is white
Perceived brightness108.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.51:1
Contrast with white5.51:1WCAG normal text: AA
Contrast with black3.81:1WCAG normal text: Fail
Greyscale equivalent#606060
Inverted#BDA225

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0070DEno red cones; affects about 1% of men; ΔE 16.4 from the original
Deuteranopia#0062D8no green cones; the most common form, about 1% of men; ΔE 8.8 from the original
Tritanopia#007C92no blue cones; rare, and affects men and women equally; ΔE 70.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.51:1WCAG large text: AAA
Contrast with black, large text3.81:1WCAG large text: AA

Named colours

Royal blue · ΔE 6.5Slate blue · ΔE 10.4Medium slateblue · ΔE 12.5Medium purple · ΔE 20.7Rebecca purple · ΔE 25.6Dodgerblue · ΔE 26.5
Nearest named CSS colourRoyal blue (#4169E1)ΔE 6.53, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#DABF42
Analogous#42A9DA, #7342DA
Triadic#DA425D, #5DDA42
Split complementary#DA7342, #A9DA42
Tetradic#DA42A9, #DABF42, #42DA73

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#EDEFFB
Lighter +30%#C2CBF3
Lighter +20%#97A6EB
Lighter +10%#6D82E2
Darker −10%#2642C3
Darker −20%#1E3498
Darker −30%#15256E
Darker −40%#0D1743
More saturated +25%#264BF6
Less saturated −25%#5E6FBE

Channel breakdown

R66
G93
B218
Red66 (25.9%)
Green93 (36.5%)
Blue218 (85.5%)
Hue229.34°
Saturation (HSL)67.26%
Lightness55.69%
Dominant channelBlue
Hex per channelR 42 · G 5D · B DA

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Every value on this page was computed from “425dda” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.