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Recognised as Colour

#427FF3

  • #427FF3
  • Blue
  • Dark
  • Nearest: Royal blue

#427FF3 is a blue with RGB values 66, 127, 243 and HSL 219°, 88%, 61%. It is a dark colour, so black text on it reaches 5.6:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#427FF3#427FF3
HEX#427FF3
RGBrgb(66, 127, 243)
RGB (0–1)0.2588, 0.498, 0.9529
RGB percentages25.9%, 49.8%, 95.3%
HSLhsl(219.3, 88.1%, 60.6%)
HSV / HSBhsv(219.3, 72.8%, 95.3%)
CMYK72.8%, 47.7%, 0%, 4.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,358,131
CSS custom property--colour: #427FF3;

Brightness & contrast

Relative luminance0.22808WCAG 2.x, 0 is black and 1 is white
Perceived brightness132.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.56:1
Contrast with white3.78:1WCAG normal text: Fail
Contrast with black5.56:1WCAG normal text: AA
Greyscale equivalent#7A7A7A
Inverted#BD800C

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3E8CF7no red cones; affects about 1% of men; ΔE 8.7 from the original
Deuteranopia#007CF1no green cones; the most common form, about 1% of men; ΔE 4.6 from the original
Tritanopia#009BADno blue cones; rare, and affects men and women equally; ΔE 64.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.78:1WCAG large text: AA
Contrast with black, large text5.56:1WCAG large text: AAA

Named colours

Royal blue · ΔE 10.1Dodgerblue · ΔE 10.2Cornflower blue · ΔE 19Slate blue · ΔE 20.4Medium slateblue · ΔE 22.2Medium purple · ΔE 22.5
Nearest named CSS colourRoyal blue (#4169E1)ΔE 10.11, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#F3B642
Analogous#42D7F3, #5E42F3
Triadic#F3427F, #7FF342
Split complementary#F35E42, #D7F342
Tetradic#F342D7, #F3B642, #42F35E

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#D2E0FC
Lighter +20%#A2C0F9
Lighter +10%#729FF6
Darker −10%#125FF0
Darker −20%#0C4BC3
Darker −30%#093993
Darker −40%#062663
More saturated +25%#367BFF
Less saturated −25%#5B87DA

Channel breakdown

R66
G127
B243
Red66 (25.9%)
Green127 (49.8%)
Blue243 (95.3%)
Hue219.32°
Saturation (HSL)88.06%
Lightness60.59%
Dominant channelBlue
Hex per channelR 42 · G 7F · B F3

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Every value on this page was computed from “427ff3” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.