Nerdulator> put something in

Recognised as Colour

#042171

  • #042171
  • Blue
  • Dark
  • Nearest: Midnight blue

#042171 is a blue with RGB values 4, 33, 113 and HSL 224°, 93%, 23%. It is a dark colour, so white text on it reaches 14.4:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#042171#042171
HEX#042171
RGBrgb(4, 33, 113)
RGB (0–1)0.0157, 0.1294, 0.4431
RGB percentages1.6%, 12.9%, 44.3%
HSLhsl(224, 93.2%, 22.9%)
HSV / HSBhsv(224, 96.5%, 44.3%)
CMYK96.5%, 70.8%, 0%, 55.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer270,705
CSS custom property--colour: #042171;

Brightness & contrast

Relative luminance0.02306WCAG 2.x, 0 is black and 1 is white
Perceived brightness45.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 14.37:1
Contrast with white14.37:1WCAG normal text: AAA
Contrast with black1.46:1WCAG normal text: Fail
Greyscale equivalent#212121
Inverted#FBDE8E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#002F73no red cones; affects about 1% of men; ΔE 11.7 from the original
Deuteranopia#002570no green cones; the most common form, about 1% of men; ΔE 4.2 from the original
Tritanopia#003746no blue cones; rare, and affects men and women equally; ΔE 49.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text14.37:1WCAG large text: AAA
Contrast with black, large text1.46:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 6.7Dark slateblue · ΔE 15.2Rebecca purple · ΔE 23.8Indigo · ΔE 27.2Navy · ΔE 28Slate blue · ΔE 31.8
Nearest named CSS colourMidnight blue (#191970)ΔE 6.73, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#715404
Analogous#045771, #1E0471
Triadic#710421, #217104
Split complementary#711E04, #577104
Tetradic#710457, #715404, #04711E

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#4877F9
Lighter +30%#1753F7
Lighter +20%#073ED4
Lighter +10%#062FA2
Darker −10%#021340
Darker −20%#01040E
Darker −30%#000000
Darker −40%#000000
More saturated +25%#001F75
Less saturated −25%#132862

Channel breakdown

R4
G33
B113
Red4 (1.6%)
Green33 (12.9%)
Blue113 (44.3%)
Hue224.04°
Saturation (HSL)93.16%
Lightness22.94%
Dominant channelBlue
Hex per channelR 04 · G 21 · B 71

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 042171” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.