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Recognised as Colour

#01258D

  • #01258D
  • Blue
  • Dark
  • Nearest: Midnight blue

#01258D is a blue with RGB values 1, 37, 141 and HSL 225°, 99%, 28%. It is a dark colour, so white text on it reaches 12.7:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#01258D#01258D
HEX#01258D
RGBrgb(1, 37, 141)
RGB (0–1)0.0039, 0.1451, 0.5529
RGB percentages0.4%, 14.5%, 55.3%
HSLhsl(224.6, 98.6%, 27.8%)
HSV / HSBhsv(224.6, 99.3%, 55.3%)
CMYK99.3%, 73.8%, 0%, 44.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer75,149
CSS custom property--colour: #01258D;

Brightness & contrast

Relative luminance0.03253WCAG 2.x, 0 is black and 1 is white
Perceived brightness55.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.72:1
Contrast with white12.72:1WCAG normal text: AAA
Contrast with black1.65:1WCAG normal text: Fail
Greyscale equivalent#252525
Inverted#FEDA72

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#003990no red cones; affects about 1% of men; ΔE 15.5 from the original
Deuteranopia#002C8Bno green cones; the most common form, about 1% of men; ΔE 6.9 from the original
Tritanopia#004356no blue cones; rare, and affects men and women equally; ΔE 62 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text12.72:1WCAG large text: AAA
Contrast with black, large text1.65:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 11.3Navy · ΔE 16.9Indigo · ΔE 19.2Rebecca purple · ΔE 19.5Dark blue · ΔE 20.2Dark slateblue · ΔE 21.3
Nearest named CSS colourMidnight blue (#191970)ΔE 11.34, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8D6901
Analogous#016B8D, #23018D
Triadic#8D0125, #258D01
Split complementary#8D2301, #6B8D01
Tetradic#8D016B, #8D6901, #018D23

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#5C86FE
Lighter +30%#2A60FD
Lighter +20%#0240F2
Lighter +10%#0132C0
Darker −10%#01185A
Darker −20%#000A28
Darker −30%#000000
Darker −40%#000000
More saturated +25%#00258E
Less saturated −25%#132E7B

Channel breakdown

R1
G37
B141
Red1 (0.4%)
Green37 (14.5%)
Blue141 (55.3%)
Hue224.57°
Saturation (HSL)98.59%
Lightness27.84%
Dominant channelBlue
Hex per channelR 01 · G 25 · B 8D

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Every value on this page was computed from “01258d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.