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Recognised as Colour

#0473FF

  • #0473FF
  • Blue
  • Dark
  • Nearest: Royal blue

#0473FF is a blue with RGB values 4, 115, 255 and HSL 213°, 100%, 51%. It is a dark colour, so black text on it reaches 4.9:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#0473FF#0473FF
HEX#0473FF
RGBrgb(4, 115, 255)
RGB (0–1)0.0157, 0.451, 1
RGB percentages1.6%, 45.1%, 100%
HSLhsl(213.5, 100%, 50.8%)
HSV / HSBhsv(213.5, 98.4%, 100%)
CMYK98.4%, 54.9%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer291,839
CSS custom property--colour: #0473FF;

Brightness & contrast

Relative luminance0.19507WCAG 2.x, 0 is black and 1 is white
Perceived brightness123.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.9:1
Contrast with white4.28:1WCAG normal text: Fail
Contrast with black4.9:1WCAG normal text: AA
Greyscale equivalent#666666
Inverted#FB8C00

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0085FFno red cones; affects about 1% of men; ΔE 14.6 from the original
Deuteranopia#0070FCno green cones; the most common form, about 1% of men; ΔE 1.2 from the original
Tritanopia#0096AEno blue cones; rare, and affects men and women equally; ΔE 75.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.28:1WCAG large text: AA
Contrast with black, large text4.9:1WCAG large text: AAA

Named colours

Royal blue · ΔE 11.8Medium slateblue · ΔE 17.9Slate blue · ΔE 21.6Dodgerblue · ΔE 23Medium purple · ΔE 28.4Cornflower blue · ΔE 34.2
Nearest named CSS colourRoyal blue (#4169E1)ΔE 11.78, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FF9004
Analogous#04F1FF, #1204FF
Triadic#FF0473, #73FF04
Split complementary#FF1204, #F1FF04
Tetradic#FF04F1, #FF9004, #04FF12

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D0E5FF
Lighter +30%#9DC8FF
Lighter +20%#6AACFF
Lighter +10%#378FFF
Darker −10%#005CD0
Darker −20%#00459D
Darker −30%#002F6A
Darker −40%#001837
More saturated +25%#0473FF
Less saturated −25%#2377E0

Channel breakdown

R4
G115
B255
Red4 (1.6%)
Green115 (45.1%)
Blue255 (100%)
Hue213.47°
Saturation (HSL)100%
Lightness50.78%
Dominant channelBlue
Hex per channelR 04 · G 73 · B FF

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Every value on this page was computed from “0473ff” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.