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Recognised as Colour

#427AB9

  • #427AB9
  • Blue
  • Dark
  • Nearest: Steel blue

#427AB9 is a blue with RGB values 66, 122, 185 and HSL 212°, 47%, 49%. It is a dark colour, so black text on it reaches 4.7:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#427AB9#427AB9
HEX#427AB9
RGBrgb(66, 122, 185)
RGB (0–1)0.2588, 0.4784, 0.7255
RGB percentages25.9%, 47.8%, 72.5%
HSLhsl(211.8, 47.4%, 49.2%)
HSV / HSBhsv(211.8, 64.3%, 72.5%)
CMYK64.3%, 34.1%, 0%, 27.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,356,793
CSS custom property--colour: #427AB9;

Brightness & contrast

Relative luminance0.1858WCAG 2.x, 0 is black and 1 is white
Perceived brightness118.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.72:1
Contrast with white4.45:1WCAG normal text: Fail
Contrast with black4.72:1WCAG normal text: AA
Greyscale equivalent#737373
Inverted#BD8546

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5F7EBCno red cones; affects about 1% of men; ΔE 6.1 from the original
Deuteranopia#4E72B8no green cones; the most common form, about 1% of men; ΔE 7.5 from the original
Tritanopia#008991no blue cones; rare, and affects men and women equally; ΔE 38.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text4.45:1WCAG large text: AA
Contrast with black, large text4.72:1WCAG large text: AAA

Named colours

Steel blue · ΔE 8.9Cornflower blue · ΔE 17.6Dodgerblue · ΔE 27.7Light slate grey · ΔE 28.4Slate grey · ΔE 28.5Deep skyblue · ΔE 29.8
Nearest named CSS colourSteel blue (#4682B4)ΔE 8.91, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B98142
Analogous#42B6B9, #4642B9
Triadic#B9427A, #7AB942
Split complementary#B94642, #B6B942
Tetradic#B942B6, #B98142, #42B946

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D6E3F1
Lighter +30%#B1C9E3
Lighter +20%#8BAED6
Lighter +10%#6694C8
Darker −10%#356193
Darker −20%#27486E
Darker −30%#1A3048
Darker −40%#0C1723
More saturated +25%#2378D8
Less saturated −25%#617C9A

Channel breakdown

R66
G122
B185
Red66 (25.9%)
Green122 (47.8%)
Blue185 (72.5%)
Hue211.76°
Saturation (HSL)47.41%
Lightness49.22%
Dominant channelBlue
Hex per channelR 42 · G 7A · B B9

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Every value on this page was computed from “427ab9” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.