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Recognised as Colour

#043DC9

  • #043DC9
  • Blue
  • Dark
  • Nearest: Medium slateblue

#043DC9 is a blue with RGB values 4, 61, 201 and HSL 223°, 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

#043DC9#043DC9
HEX#043DC9
RGBrgb(4, 61, 201)
RGB (0–1)0.0157, 0.2392, 0.7882
RGB percentages1.6%, 23.9%, 78.8%
HSLhsl(222.6, 96.1%, 40.2%)
HSV / HSBhsv(222.6, 98%, 78.8%)
CMYK98%, 69.7%, 0%, 21.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer277,961
CSS custom property--colour: #043DC9;

Brightness & contrast

Relative luminance0.0758WCAG 2.x, 0 is black and 1 is white
Perceived brightness82.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.35:1
Contrast with white8.35:1WCAG normal text: AAA
Contrast with black2.52:1WCAG normal text: Fail
Greyscale equivalent#3B3B3B
Inverted#FBC236

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0057CDno red cones; affects about 1% of men; ΔE 19.2 from the original
Deuteranopia#0045C6no green cones; the most common form, about 1% of men; ΔE 7.9 from the original
Tritanopia#00657Eno blue cones; rare, and affects men and women equally; ΔE 78.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text8.35:1WCAG large text: AAA
Contrast with black, large text2.52:1WCAG large text: Fail

Named colours

Medium slateblue · ΔE 21.7Dark blue · ΔE 21.8Slate blue · ΔE 22.2Royal blue · ΔE 23.3Navy · ΔE 23.8Indigo · ΔE 27.8
Nearest named CSS colourMedium slateblue (#7B68EE)ΔE 21.66, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#C99004
Analogous#04A0C9, #2D04C9
Triadic#C9043D, #3DC904
Split complementary#C92D04, #A0C904
Tetradic#C904A0, #C99004, #04C92D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9CB8FD
Lighter +30%#6A94FC
Lighter +20%#3870FB
Lighter +10%#064DFA
Darker −10%#032E97
Darker −20%#021F65
Darker −30%#010F33
Darker −40%#000001
More saturated +25%#003BCD
Less saturated −25%#1E48AF

Channel breakdown

R4
G61
B201
Red4 (1.6%)
Green61 (23.9%)
Blue201 (78.8%)
Hue222.64°
Saturation (HSL)96.1%
Lightness40.2%
Dominant channelBlue
Hex per channelR 04 · G 3D · B C9

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Every value on this page was computed from “043dc9” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.