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Recognised as Colour

#043358

  • #043358
  • Blue
  • Dark
  • Nearest: Dark slate grey

#043358 is a blue with RGB values 4, 51, 88 and HSL 206°, 91%, 18%. It is a dark colour, so white text on it reaches 13:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#043358#043358
HEX#043358
RGBrgb(4, 51, 88)
RGB (0–1)0.0157, 0.2, 0.3451
RGB percentages1.6%, 20%, 34.5%
HSLhsl(206.4, 91.3%, 18%)
HSV / HSBhsv(206.4, 95.5%, 34.5%)
CMYK95.5%, 42%, 0%, 65.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer275,288
CSS custom property--colour: #043358;

Brightness & contrast

Relative luminance0.03098WCAG 2.x, 0 is black and 1 is white
Perceived brightness49.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.97:1
Contrast with white12.97:1WCAG normal text: AAA
Contrast with black1.62:1WCAG normal text: Fail
Greyscale equivalent#2C2C2C
Inverted#FBCCA7

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#213559no red cones; affects about 1% of men; ΔE 4.7 from the original
Deuteranopia#132E57no green cones; the most common form, about 1% of men; ΔE 5.4 from the original
Tritanopia#003C41no blue cones; rare, and affects men and women equally; ΔE 24.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text12.97:1WCAG large text: AAA
Contrast with black, large text1.62:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 28.1Dark slateblue · ΔE 31.4Steel blue · ΔE 32.9Black · ΔE 33.4Dim grey · ΔE 35.7Slate grey · ΔE 36.2
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 28.13, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#582904
Analogous#045853, #040958
Triadic#580433, #335804
Split complementary#580409, #585304
Tetradic#530458, #582904, #095804

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#32A0F6
Lighter +30%#0B88EA
Lighter +20%#086CBA
Lighter +10%#064F89
Darker −10%#021727
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#00335C
Less saturated −25%#10324D

Channel breakdown

R4
G51
B88
Red4 (1.6%)
Green51 (20%)
Blue88 (34.5%)
Hue206.43°
Saturation (HSL)91.3%
Lightness18.04%
Dominant channelBlue
Hex per channelR 04 · G 33 · B 58

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Every value on this page was computed from “hex 043358” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.