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Recognised as Colour

#004089

  • #004089
  • Blue
  • Dark
  • Nearest: Dark slateblue

#004089 is a blue with RGB values 0, 64, 137 and HSL 212°, 100%, 27%. It is a dark colour, so white text on it reaches 10:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#004089#004089
HEX#004089
RGBrgb(0, 64, 137)
RGB (0–1)0, 0.251, 0.5373
RGB percentages0%, 25.1%, 53.7%
HSLhsl(212, 100%, 26.9%)
HSV / HSBhsv(212, 100%, 53.7%)
CMYK100%, 53.3%, 0%, 46.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,521
CSS custom property--colour: #004089;

Brightness & contrast

Relative luminance0.05473WCAG 2.x, 0 is black and 1 is white
Perceived brightness67.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.03:1
Contrast with white10.03:1WCAG normal text: AAA
Contrast with black2.09:1WCAG normal text: Fail
Greyscale equivalent#383838
Inverted#FFBF76

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#09488Cno red cones; affects about 1% of men; ΔE 5.4 from the original
Deuteranopia#003D88no green cones; the most common form, about 1% of men; ΔE 2.2 from the original
Tritanopia#00525Eno blue cones; rare, and affects men and women equally; ΔE 44.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text10.03:1WCAG large text: AAA
Contrast with black, large text2.09:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 13.8Midnight blue · ΔE 22.7Rebecca purple · ΔE 30.3Royal blue · ΔE 30.9Slate blue · ΔE 31.3Steel blue · ΔE 32.7
Nearest named CSS colourDark slateblue (#483D8B)ΔE 13.76, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#894900
Analogous#008489, #040089
Triadic#890040, #408900
Split complementary#890500, #848900
Tetradic#890085, #894900, #008905

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#56A5FF
Lighter +30%#238AFF
Lighter +20%#0070EF
Lighter +10%#0058BC
Darker −10%#002856
Darker −20%#001023
Darker −30%#000000
Darker −40%#000000
More saturated +25%#004089
Less saturated −25%#114178

Channel breakdown

R0
G64
B137
Red0 (0%)
Green64 (25.1%)
Blue137 (53.7%)
Hue211.97°
Saturation (HSL)100%
Lightness26.86%
Dominant channelBlue
Hex per channelR 00 · G 40 · B 89

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Every value on this page was computed from “hex 004089” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.