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Recognised as Colour

#004391

  • #004391
  • Blue
  • Dark
  • Nearest: Dark slateblue

#004391 is a blue with RGB values 0, 67, 145 and HSL 212°, 100%, 28%. It is a dark colour, so white text on it reaches 9.5:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#004391#004391
HEX#004391
RGBrgb(0, 67, 145)
RGB (0–1)0, 0.2627, 0.5686
RGB percentages0%, 26.3%, 56.9%
HSLhsl(212.3, 100%, 28.4%)
HSV / HSBhsv(212.3, 100%, 56.9%)
CMYK100%, 53.8%, 0%, 43.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer17,297
CSS custom property--colour: #004391;

Brightness & contrast

Relative luminance0.06059WCAG 2.x, 0 is black and 1 is white
Perceived brightness70.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.49:1
Contrast with white9.49:1WCAG normal text: AAA
Contrast with black2.21:1WCAG normal text: Fail
Greyscale equivalent#3A3A3A
Inverted#FFBC6E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#044C94no red cones; affects about 1% of men; ΔE 6.3 from the original
Deuteranopia#00408Fno green cones; the most common form, about 1% of men; ΔE 1.7 from the original
Tritanopia#005663no blue cones; rare, and affects men and women equally; ΔE 46.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.49:1WCAG large text: AAA
Contrast with black, large text2.21:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 13.2Midnight blue · ΔE 22.2Royal blue · ΔE 27.8Slate blue · ΔE 28.5Rebecca purple · ΔE 28.7Cornflower blue · ΔE 32.8
Nearest named CSS colourDark slateblue (#483D8B)ΔE 13.15, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#914E00
Analogous#008C91, #050091
Triadic#910043, #439100
Split complementary#910500, #8C9100
Tetradic#91008C, #914E00, #009105

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#5EA8FF
Lighter +30%#2B8DFF
Lighter +20%#0072F7
Lighter +10%#005BC4
Darker −10%#002B5E
Darker −20%#00142B
Darker −30%#000000
Darker −40%#000000
More saturated +25%#004391
Less saturated −25%#12447F

Channel breakdown

R0
G67
B145
Red0 (0%)
Green67 (26.3%)
Blue145 (56.9%)
Hue212.28°
Saturation (HSL)100%
Lightness28.43%
Dominant channelBlue
Hex per channelR 00 · G 43 · B 91

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Every value on this page was computed from “hex 004391” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.