Nerdulator> put something in

Recognised as Colour

#001540

  • #001540
  • Blue
  • Dark
  • Nearest: Midnight blue

#001540 is a blue with RGB values 0, 21, 64 and HSL 220°, 100%, 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

#001540#001540
HEX#001540
RGBrgb(0, 21, 64)
RGB (0–1)0, 0.0824, 0.251
RGB percentages0%, 8.2%, 25.1%
HSLhsl(220.3, 100%, 12.5%)
HSV / HSBhsv(220.3, 100%, 25.1%)
CMYK100%, 67.2%, 0%, 74.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,440
CSS custom property--colour: #001540;

Brightness & contrast

Relative luminance0.00906WCAG 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 17.78:1
Contrast with white17.78:1WCAG normal text: AAA
Contrast with black1.18:1WCAG normal text: Fail
Greyscale equivalent#141414
Inverted#FFEABF

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 0.7 from the original
Tritanopia#002028no blue cones; rare, and affects men and women equally; ΔE 29.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text17.78:1WCAG large text: AAA
Contrast with black, large text1.18:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 29Dark slateblue · ΔE 29.4Black · ΔE 33.1Dark slate grey · ΔE 42.1Rebecca purple · ΔE 43.2Steel blue · ΔE 47.2
Nearest named CSS colourMidnight blue (#191970)ΔE 29.03, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#402B00
Analogous#003540, #0B0040
Triadic#400015, #154000
Split complementary#400B00, #354000
Tetradic#400035, #402B00, #00400B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#0D5CFF
Lighter +30%#0047D9
Lighter +20%#0036A6
Lighter +10%#002673
Darker −10%#00040D
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#001540
Less saturated −25%#081838

Channel breakdown

R0
G21
B64
Red0 (0%)
Green21 (8.2%)
Blue64 (25.1%)
Hue220.31°
Saturation (HSL)100%
Lightness12.55%
Dominant channelBlue
Hex per channelR 00 · G 15 · B 40

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

Nerdulate something else

Nothing in mind? Surprise me · today’s page

Every value on this page was computed from “hex 001540” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.