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Colour

#043A89

  • #043A89
  • Blue
  • Dark
  • Nearest: Dark slateblue

#043A89 is a blue with RGB values 4, 58, 137 and HSL 216°, 94%, 28%. It is a dark colour, so white text on it reaches 10.7:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#043A89#043A89
HEX#043A89
RGBrgb(4, 58, 137)
RGB (0–1)0.0157, 0.2275, 0.5373
RGB percentages1.6%, 22.7%, 53.7%
HSLhsl(215.6, 94.3%, 27.6%)
HSV / HSBhsv(215.6, 97.1%, 53.7%)
CMYK97.1%, 57.7%, 0%, 46.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer277,129
CSS custom property--colour: #043A89;

Brightness & contrast

Relative luminance0.04858WCAG 2.x, 0 is black and 1 is white
Perceived brightness64.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.65:1
Contrast with white10.65:1WCAG normal text: AAA
Contrast with black1.97:1WCAG normal text: Fail
Greyscale equivalent#343434
Inverted#FBC576

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#00448Cno red cones; affects about 1% of men; ΔE 7.5 from the original
Deuteranopia#003987no green cones; the most common form, about 1% of men; ΔE 0.8 from the original
Tritanopia#004E5Bno blue cones; rare, and affects men and women equally; ΔE 48.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text10.65:1WCAG large text: AAA
Contrast with black, large text1.97:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 11.5Midnight blue · ΔE 17.7Rebecca purple · ΔE 26.2Slate blue · ΔE 28.2Royal blue · ΔE 28.8Medium purple · ΔE 34.6
Nearest named CSS colourDark slateblue (#483D8B)ΔE 11.5, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#895304
Analogous#047C89, #110489
Triadic#89043A, #3A8904
Split complementary#891104, #7C8904
Tetradic#89047C, #895304, #048911

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#5F9EFA
Lighter +30%#2D80F9
Lighter +20%#0764EC
Lighter +10%#054FBB
Darker −10%#032557
Darker −20%#011026
Darker −30%#000000
Darker −40%#000000
More saturated +25%#00398D
Less saturated −25%#163D77

Channel breakdown

R4
G58
B137
Red4 (1.6%)
Green58 (22.7%)
Blue137 (53.7%)
Hue215.64°
Saturation (HSL)94.33%
Lightness27.65%
Dominant channelBlue
Hex per channelR 04 · G 3A · B 89

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Every value on this page was computed from “043a89” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.