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Recognised as Colour

#004389

  • #004389
  • Blue
  • Dark
  • Nearest: Dark slateblue

#004389 is a blue with RGB values 0, 67, 137 and HSL 211°, 100%, 27%. It is a dark colour, so white text on it reaches 9.7:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#004389#004389
HEX#004389
RGBrgb(0, 67, 137)
RGB (0–1)0, 0.2627, 0.5373
RGB percentages0%, 26.3%, 53.7%
HSLhsl(210.7, 100%, 26.9%)
HSV / HSBhsv(210.7, 100%, 53.7%)
CMYK100%, 51.1%, 0%, 46.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer17,289
CSS custom property--colour: #004389;

Brightness & contrast

Relative luminance0.0582WCAG 2.x, 0 is black and 1 is white
Perceived brightness69.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.7:1
Contrast with white9.7:1WCAG normal text: AAA
Contrast with black2.16:1WCAG normal text: Fail
Greyscale equivalent#3A3A3A
Inverted#FFBC76

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#164A8Cno red cones; affects about 1% of men; ΔE 4.3 from the original
Deuteranopia#003F88no green cones; the most common form, about 1% of men; ΔE 3.1 from the original
Tritanopia#00545Fno blue cones; rare, and affects men and women equally; ΔE 42.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.7:1WCAG large text: AAA
Contrast with black, large text2.16:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 15.4Midnight blue · ΔE 25.2Steel blue · ΔE 30.3Royal blue · ΔE 32.3Rebecca purple · ΔE 32.3Slate blue · ΔE 33
Nearest named CSS colourDark slateblue (#483D8B)ΔE 15.37, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#894600
Analogous#008789, #020089
Triadic#890043, #438900
Split complementary#890200, #878900
Tetradic#890087, #894600, #008902

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#56A9FF
Lighter +30%#238FFF
Lighter +20%#0075EF
Lighter +10%#005CBC
Darker −10%#002A56
Darker −20%#001123
Darker −30%#000000
Darker −40%#000000
More saturated +25%#004389
Less saturated −25%#114378

Channel breakdown

R0
G67
B137
Red0 (0%)
Green67 (26.3%)
Blue137 (53.7%)
Hue210.66°
Saturation (HSL)100%
Lightness26.86%
Dominant channelBlue
Hex per channelR 00 · G 43 · B 89

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Every value on this page was computed from “hex 004389” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.