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Recognised as Colour

#040151

  • #040151
  • Blue
  • Dark
  • Nearest: Midnight blue

#040151 is a blue with RGB values 4, 1, 81 and HSL 242°, 98%, 16%. It is a dark colour, so white text on it reaches 18.6:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#040151#040151
HEX#040151
RGBrgb(4, 1, 81)
RGB (0–1)0.0157, 0.0039, 0.3176
RGB percentages1.6%, 0.4%, 31.8%
HSLhsl(242.2, 97.6%, 16.1%)
HSV / HSBhsv(242.2, 98.8%, 31.8%)
CMYK95.1%, 98.8%, 0%, 68.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer262,481
CSS custom property--colour: #040151;

Brightness & contrast

Relative luminance0.00642WCAG 2.x, 0 is black and 1 is white
Perceived brightness27.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 18.61:1
Contrast with white18.61:1WCAG normal text: AAA
Contrast with black1.13:1WCAG normal text: Fail
Greyscale equivalent#070707
Inverted#FBFEAE

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#001753no red cones; affects about 1% of men; ΔE 16 from the original
Deuteranopia#000E50no green cones; the most common form, about 1% of men; ΔE 9.6 from the original
Tritanopia#001D2Cno blue cones; rare, and affects men and women equally; ΔE 49.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text18.61:1WCAG large text: AAA
Contrast with black, large text1.13:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 10.9Indigo · ΔE 25.2Navy · ΔE 25.2Dark slateblue · ΔE 26.1Rebecca purple · ΔE 29Dark blue · ΔE 30.4
Nearest named CSS colourMidnight blue (#191970)ΔE 10.88, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#4E5101
Analogous#012651, #2C0151
Triadic#510401, #015104
Split complementary#512C01, #265101
Tetradic#510126, #4E5101, #01512C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#2A22FC
Lighter +30%#0B03E8
Lighter +20%#0902B6
Lighter +10%#060283
Darker −10%#02001F
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#030052
Less saturated −25%#0D0B47

Channel breakdown

R4
G1
B81
Red4 (1.6%)
Green1 (0.4%)
Blue81 (31.8%)
Hue242.25°
Saturation (HSL)97.56%
Lightness16.08%
Dominant channelBlue
Hex per channelR 04 · G 01 · B 51

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Every value on this page was computed from “hex 040151” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.