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Colour

#00258A

  • #00258A
  • Blue
  • Dark
  • Nearest: Midnight blue

#00258A is a blue with RGB values 0, 37, 138 and HSL 224°, 100%, 27%. It is a dark colour, so white text on it reaches 12.9:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#00258A#00258A
HEX#00258A
RGBrgb(0, 37, 138)
RGB (0–1)0, 0.1451, 0.5412
RGB percentages0%, 14.5%, 54.1%
HSLhsl(223.9, 100%, 27.1%)
HSV / HSBhsv(223.9, 100%, 54.1%)
CMYK100%, 73.2%, 0%, 45.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer9,610
CSS custom property--colour: #00258A;

Brightness & contrast

Relative luminance0.03158WCAG 2.x, 0 is black and 1 is white
Perceived brightness54.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.87:1
Contrast with white12.87:1WCAG normal text: AAA
Contrast with black1.63:1WCAG normal text: Fail
Greyscale equivalent#242424
Inverted#FFDA75

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#00388Dno red cones; affects about 1% of men; ΔE 14.8 from the original
Deuteranopia#002B88no green cones; the most common form, about 1% of men; ΔE 6.1 from the original
Tritanopia#004255no blue cones; rare, and affects men and women equally; ΔE 60.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text12.87:1WCAG large text: AAA
Contrast with black, large text1.63:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 9.9Navy · ΔE 18.2Rebecca purple · ΔE 19.6Indigo · ΔE 19.9Dark slateblue · ΔE 20.1Dark blue · ΔE 21.7
Nearest named CSS colourMidnight blue (#191970)ΔE 9.91, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8A6500
Analogous#006A8A, #20008A
Triadic#8A0025, #258A00
Split complementary#8A2000, #6A8A00
Tetradic#8A006A, #8A6500, #008A20

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#5784FF
Lighter +30%#245FFF
Lighter +20%#0040F0
Lighter +10%#0033BD
Darker −10%#001757
Darker −20%#000A24
Darker −30%#000000
Darker −40%#000000
More saturated +25%#00258A
Less saturated −25%#112D79

Channel breakdown

R0
G37
B138
Red0 (0%)
Green37 (14.5%)
Blue138 (54.1%)
Hue223.91°
Saturation (HSL)100%
Lightness27.06%
Dominant channelBlue
Hex per channelR 00 · G 25 · B 8A

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Every value on this page was computed from “00258a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.