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Recognised as Colour

#043FC9

  • #043FC9
  • Blue
  • Dark
  • Nearest: Medium slateblue

#043FC9 is a blue with RGB values 4, 63, 201 and HSL 222°, 96%, 40%. It is a dark colour, so white text on it reaches 8.2:1 contrast (AAA for normal text). The nearest named colour is Medium slateblue.

Colour values

#043FC9#043FC9
HEX#043FC9
RGBrgb(4, 63, 201)
RGB (0–1)0.0157, 0.2471, 0.7882
RGB percentages1.6%, 24.7%, 78.8%
HSLhsl(222, 96.1%, 40.2%)
HSV / HSBhsv(222, 98%, 78.8%)
CMYK98%, 68.7%, 0%, 21.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer278,473
CSS custom property--colour: #043FC9;

Brightness & contrast

Relative luminance0.07798WCAG 2.x, 0 is black and 1 is white
Perceived brightness83.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.2:1
Contrast with white8.2:1WCAG normal text: AAA
Contrast with black2.56:1WCAG normal text: Fail
Greyscale equivalent#3C3C3C
Inverted#FBC036

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0058CDno red cones; affects about 1% of men; ΔE 18.5 from the original
Deuteranopia#0046C7no green cones; the most common form, about 1% of men; ΔE 6.6 from the original
Tritanopia#00667Fno blue cones; rare, and affects men and women equally; ΔE 77.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text8.2:1WCAG large text: AAA
Contrast with black, large text2.56:1WCAG large text: Fail

Named colours

Medium slateblue · ΔE 20.9Slate blue · ΔE 21.1Royal blue · ΔE 21.9Dark blue · ΔE 22.5Navy · ΔE 24.2Indigo · ΔE 27.9
Nearest named CSS colourMedium slateblue (#7B68EE)ΔE 20.93, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#C98E04
Analogous#04A1C9, #2B04C9
Triadic#C9043F, #3FC904
Split complementary#C92B04, #A2C904
Tetradic#C904A2, #C98E04, #04C92C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9CB9FD
Lighter +30%#6A96FC
Lighter +20%#3872FB
Lighter +10%#064FFA
Darker −10%#032F97
Darker −20%#022065
Darker −30%#011033
Darker −40%#000001
More saturated +25%#003DCD
Less saturated −25%#1E49AF

Channel breakdown

R4
G63
B201
Red4 (1.6%)
Green63 (24.7%)
Blue201 (78.8%)
Hue222.03°
Saturation (HSL)96.1%
Lightness40.2%
Dominant channelBlue
Hex per channelR 04 · G 3F · B C9

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Every value on this page was computed from “043fc9” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.