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Recognised as Colour

#045DC9

  • #045DC9
  • Blue
  • Dark
  • Nearest: Royal blue

#045DC9 is a blue with RGB values 4, 93, 201 and HSL 213°, 96%, 40%. It is a dark colour, so white text on it reaches 6.2:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#045DC9#045DC9
HEX#045DC9
RGBrgb(4, 93, 201)
RGB (0–1)0.0157, 0.3647, 0.7882
RGB percentages1.6%, 36.5%, 78.8%
HSLhsl(212.9, 96.1%, 40.2%)
HSV / HSBhsv(212.9, 98%, 78.8%)
CMYK98%, 53.7%, 0%, 21.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer286,153
CSS custom property--colour: #045DC9;

Brightness & contrast

Relative luminance0.12072WCAG 2.x, 0 is black and 1 is white
Perceived brightness98.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.15:1
Contrast with white6.15:1WCAG normal text: AA
Contrast with black3.41:1WCAG normal text: Fail
Greyscale equivalent#525252
Inverted#FBA236

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#006ACDno red cones; affects about 1% of men; ΔE 9 from the original
Deuteranopia#005AC7no green cones; the most common form, about 1% of men; ΔE 1.6 from the original
Tritanopia#00788Ano blue cones; rare, and affects men and women equally; ΔE 60.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.15:1WCAG large text: AAA
Contrast with black, large text3.41:1WCAG large text: AA

Named colours

Royal blue · ΔE 9.5Slate blue · ΔE 17Dodgerblue · ΔE 20.7Dark slateblue · ΔE 23.4Medium slateblue · ΔE 23.8Medium purple · ΔE 24.7
Nearest named CSS colourRoyal blue (#4169E1)ΔE 9.49, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#C97004
Analogous#04C0C9, #0D04C9
Triadic#C9045D, #5DC904
Split complementary#C90D04, #C0C904
Tetradic#C904C0, #C97004, #04C90D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9CC8FD
Lighter +30%#6AACFC
Lighter +20%#3890FB
Lighter +10%#0674FA
Darker −10%#034697
Darker −20%#022F65
Darker −30%#011833
Darker −40%#000001
More saturated +25%#005DCD
Less saturated −25%#1E5FAF

Channel breakdown

R4
G93
B201
Red4 (1.6%)
Green93 (36.5%)
Blue201 (78.8%)
Hue212.89°
Saturation (HSL)96.1%
Lightness40.2%
Dominant channelBlue
Hex per channelR 04 · G 5D · B C9

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Every value on this page was computed from “045dc9” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.