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Colour

#002591

  • #002591
  • Blue
  • Dark
  • Nearest: Midnight blue

#002591 is a blue with RGB values 0, 37, 145 and HSL 225°, 100%, 28%. It is a dark colour, so white text on it reaches 12.5:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#002591#002591
HEX#002591
RGBrgb(0, 37, 145)
RGB (0–1)0, 0.1451, 0.5686
RGB percentages0%, 14.5%, 56.9%
HSLhsl(224.7, 100%, 28.4%)
HSV / HSBhsv(224.7, 100%, 56.9%)
CMYK100%, 74.5%, 0%, 43.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer9,617
CSS custom property--colour: #002591;

Brightness & contrast

Relative luminance0.03367WCAG 2.x, 0 is black and 1 is white
Perceived brightness56.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.55:1
Contrast with white12.55:1WCAG normal text: AAA
Contrast with black1.67:1WCAG normal text: Fail
Greyscale equivalent#252525
Inverted#FFDA6E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#003A94no red cones; affects about 1% of men; ΔE 16.2 from the original
Deuteranopia#002D8Fno green cones; the most common form, about 1% of men; ΔE 7.6 from the original
Tritanopia#004559no blue cones; rare, and affects men and women equally; ΔE 63.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text12.55:1WCAG large text: AAA
Contrast with black, large text1.67:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 13.4Navy · ΔE 15.4Dark blue · ΔE 18.3Indigo · ΔE 18.5Rebecca purple · ΔE 19.8Dark slateblue · ΔE 23.2
Nearest named CSS colourMidnight blue (#191970)ΔE 13.39, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#916C00
Analogous#006D91, #240091
Triadic#910025, #259100
Split complementary#912400, #6D9100
Tetradic#91006D, #916C00, #009124

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#5E87FF
Lighter +30%#2B61FF
Lighter +20%#003FF7
Lighter +10%#0032C4
Darker −10%#00185E
Darker −20%#000B2B
Darker −30%#000000
Darker −40%#000000
More saturated +25%#002591
Less saturated −25%#122E7F

Channel breakdown

R0
G37
B145
Red0 (0%)
Green37 (14.5%)
Blue145 (56.9%)
Hue224.69°
Saturation (HSL)100%
Lightness28.43%
Dominant channelBlue
Hex per channelR 00 · G 25 · B 91

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Every value on this page was computed from “hex 002591” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.