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Recognised as Colour

#045FF0

  • #045FF0
  • Blue
  • Dark
  • Nearest: Royal blue

#045FF0 is a blue with RGB values 4, 95, 240 and HSL 217°, 97%, 48%. It is a dark colour, so white text on it reaches 5.4:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#045FF0#045FF0
HEX#045FF0
RGBrgb(4, 95, 240)
RGB (0–1)0.0157, 0.3725, 0.9412
RGB percentages1.6%, 37.3%, 94.1%
HSLhsl(216.9, 96.7%, 47.8%)
HSV / HSBhsv(216.9, 98.3%, 94.1%)
CMYK98.3%, 60.4%, 0%, 5.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer286,704
CSS custom property--colour: #045FF0;

Brightness & contrast

Relative luminance0.14502WCAG 2.x, 0 is black and 1 is white
Perceived brightness108.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.38:1
Contrast with white5.38:1WCAG normal text: AA
Contrast with black3.9:1WCAG normal text: Fail
Greyscale equivalent#565656
Inverted#FBA00F

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0075F5no red cones; affects about 1% of men; ΔE 15.4 from the original
Deuteranopia#0061EDno green cones; the most common form, about 1% of men; ΔE 3.3 from the original
Tritanopia#00859Eno blue cones; rare, and affects men and women equally; ΔE 79.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.38:1WCAG large text: AAA
Contrast with black, large text3.9:1WCAG large text: AA

Named colours

Royal blue · ΔE 15.6Medium slateblue · ΔE 16.5Slate blue · ΔE 20.8Medium purple · ΔE 30.2Dodgerblue · ΔE 31.9Rebecca purple · ΔE 34.7
Nearest named CSS colourRoyal blue (#4169E1)ΔE 15.62, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#F09504
Analogous#04D5F0, #1F04F0
Triadic#F0045F, #5FF004
Split complementary#F01F04, #D5F004
Tetradic#F004D5, #F09504, #04F01F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C2D9FE
Lighter +30%#90BAFD
Lighter +20%#5E9BFC
Lighter +10%#2C7CFB
Darker −10%#034BBE
Darker −20%#02378C
Darker −30%#01235A
Darker −40%#011027
More saturated +25%#005EF4
Less saturated −25%#2266D1

Channel breakdown

R4
G95
B240
Red4 (1.6%)
Green95 (37.3%)
Blue240 (94.1%)
Hue216.86°
Saturation (HSL)96.72%
Lightness47.84%
Dominant channelBlue
Hex per channelR 04 · G 5F · B F0

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Every value on this page was computed from “045ff0” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.