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Recognised as Colour

#043EC9

  • #043EC9
  • Blue
  • Dark
  • Nearest: Medium slateblue

#043EC9 is a blue with RGB values 4, 62, 201 and HSL 222°, 96%, 40%. It is a dark colour, so white text on it reaches 8.3:1 contrast (AAA for normal text). The nearest named colour is Medium slateblue.

Colour values

#043EC9#043EC9
HEX#043EC9
RGBrgb(4, 62, 201)
RGB (0–1)0.0157, 0.2431, 0.7882
RGB percentages1.6%, 24.3%, 78.8%
HSLhsl(222.3, 96.1%, 40.2%)
HSV / HSBhsv(222.3, 98%, 78.8%)
CMYK98%, 69.2%, 0%, 21.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer278,217
CSS custom property--colour: #043EC9;

Brightness & contrast

Relative luminance0.07688WCAG 2.x, 0 is black and 1 is white
Perceived brightness82.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.28:1
Contrast with white8.28:1WCAG normal text: AAA
Contrast with black2.54:1WCAG normal text: Fail
Greyscale equivalent#3C3C3C
Inverted#FBC136

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0057CDno red cones; affects about 1% of men; ΔE 18.4 from the original
Deuteranopia#0046C7no green cones; the most common form, about 1% of men; ΔE 7.4 from the original
Tritanopia#00657Fno blue cones; rare, and affects men and women equally; ΔE 77.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text8.28:1WCAG large text: AAA
Contrast with black, large text2.54:1WCAG large text: Fail

Named colours

Medium slateblue · ΔE 21.3Slate blue · ΔE 21.7Dark blue · ΔE 22.1Royal blue · ΔE 22.6Navy · ΔE 24Indigo · ΔE 27.8
Nearest named CSS colourMedium slateblue (#7B68EE)ΔE 21.28, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#C98F04
Analogous#04A0C9, #2D04C9
Triadic#C9043E, #3EC904
Split complementary#C92C04, #A1C904
Tetradic#C904A0, #C98F04, #04C92C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9CB9FD
Lighter +30%#6A95FC
Lighter +20%#3871FB
Lighter +10%#064EFA
Darker −10%#032F97
Darker −20%#021F65
Darker −30%#011033
Darker −40%#000001
More saturated +25%#003CCD
Less saturated −25%#1E49AF

Channel breakdown

R4
G62
B201
Red4 (1.6%)
Green62 (24.3%)
Blue201 (78.8%)
Hue222.34°
Saturation (HSL)96.1%
Lightness40.2%
Dominant channelBlue
Hex per channelR 04 · G 3E · B C9

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Every value on this page was computed from “043ec9” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.