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Recognised as Colour

#427BFE

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

#427BFE is a blue with RGB values 66, 123, 254 and HSL 222°, 99%, 63%. It is a dark colour, so black text on it reaches 5.5:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#427BFE#427BFE
HEX#427BFE
RGBrgb(66, 123, 254)
RGB (0–1)0.2588, 0.4824, 0.9961
RGB percentages25.9%, 48.2%, 99.6%
HSLhsl(221.8, 98.9%, 62.7%)
HSV / HSBhsv(221.8, 74%, 99.6%)
CMYK74%, 51.6%, 0%, 0.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,357,118
CSS custom property--colour: #427BFE;

Brightness & contrast

Relative luminance0.2248WCAG 2.x, 0 is black and 1 is white
Perceived brightness132.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.5:1
Contrast with white3.82:1WCAG normal text: Fail
Contrast with black5.5:1WCAG normal text: AA
Greyscale equivalent#787878
Inverted#BD8401

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#1F8CFFno red cones; affects about 1% of men; ΔE 14.7 from the original
Deuteranopia#007AFBno green cones; the most common form, about 1% of men; ΔE 5 from the original
Tritanopia#009BB1no blue cones; rare, and affects men and women equally; ΔE 71.6 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.82:1WCAG large text: AA
Contrast with black, large text5.5:1WCAG large text: AAA

Named colours

Royal blue · ΔE 8.6Medium slateblue · ΔE 16.6Dodgerblue · ΔE 17.8Slate blue · ΔE 19Medium purple · ΔE 23.4Cornflower blue · ΔE 27.8
Nearest named CSS colourRoyal blue (#4169E1)ΔE 8.6, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FEC542
Analogous#42D9FE, #6742FE
Triadic#FE427B, #7BFE42
Split complementary#FE6742, #D9FE42
Tetradic#FE42D9, #FEC542, #42FE67

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#DAE5FF
Lighter +20%#A7C2FF
Lighter +10%#759EFE
Darker −10%#0F58FE
Darker −20%#0143D9
Darker −30%#0133A6
Darker −40%#012373
More saturated +25%#417BFF
Less saturated −25%#5A84E6

Channel breakdown

R66
G123
B254
Red66 (25.9%)
Green123 (48.2%)
Blue254 (99.6%)
Hue221.81°
Saturation (HSL)98.95%
Lightness62.75%
Dominant channelBlue
Hex per channelR 42 · G 7B · B FE

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