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Recognised as Colour

#011540

  • #011540
  • Blue
  • Dark
  • Nearest: Midnight blue

#011540 is a blue with RGB values 1, 21, 64 and HSL 221°, 97%, 13%. It is a dark colour, so white text on it reaches 17.8:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#011540#011540
HEX#011540
RGBrgb(1, 21, 64)
RGB (0–1)0.0039, 0.0824, 0.251
RGB percentages0.4%, 8.2%, 25.1%
HSLhsl(221, 96.9%, 12.7%)
HSV / HSBhsv(221, 98.4%, 25.1%)
CMYK98.4%, 67.2%, 0%, 74.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer70,976
CSS custom property--colour: #011540;

Brightness & contrast

Relative luminance0.00913WCAG 2.x, 0 is black and 1 is white
Perceived brightness26.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 17.76:1
Contrast with white17.76:1WCAG normal text: AAA
Contrast with black1.18:1WCAG normal text: Fail
Greyscale equivalent#141414
Inverted#FEEABF

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#001B41no red cones; affects about 1% of men; ΔE 5.6 from the original
Deuteranopia#00153Fno green cones; the most common form, about 1% of men; ΔE 0.8 from the original
Tritanopia#002028no blue cones; rare, and affects men and women equally; ΔE 29.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text17.76:1WCAG large text: AAA
Contrast with black, large text1.18:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 29Dark slateblue · ΔE 29.3Black · ΔE 33.1Dark slate grey · ΔE 42.1Rebecca purple · ΔE 43.1Steel blue · ΔE 47.2
Nearest named CSS colourMidnight blue (#191970)ΔE 28.97, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#402C01
Analogous#013440, #0D0140
Triadic#400115, #154001
Split complementary#400D01, #344001
Tetradic#400134, #402C01, #01400D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#125CFB
Lighter +30%#0346D7
Lighter +20%#0336A4
Lighter +10%#022572
Darker −10%#00050E
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#001541
Less saturated −25%#091838

Channel breakdown

R1
G21
B64
Red1 (0.4%)
Green21 (8.2%)
Blue64 (25.1%)
Hue220.95°
Saturation (HSL)96.92%
Lightness12.75%
Dominant channelBlue
Hex per channelR 01 · G 15 · B 40

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Every value on this page was computed from “hex 011540” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.