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Recognised as Colour

#040AAF

  • #040AAF
  • Blue
  • Dark
  • Nearest: Dark blue

#040AAF is a blue with RGB values 4, 10, 175 and HSL 238°, 96%, 35%. It is a dark colour, so white text on it reaches 12.6:1 contrast (AAA for normal text). The nearest named colour is Dark blue.

Colour values

#040AAF#040AAF
HEX#040AAF
RGBrgb(4, 10, 175)
RGB (0–1)0.0157, 0.0392, 0.6863
RGB percentages1.6%, 3.9%, 68.6%
HSLhsl(237.9, 95.5%, 35.1%)
HSV / HSBhsv(237.9, 97.7%, 68.6%)
CMYK97.7%, 94.3%, 0%, 31.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer264,879
CSS custom property--colour: #040AAF;

Brightness & contrast

Relative luminance0.03338WCAG 2.x, 0 is black and 1 is white
Perceived brightness59.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.59:1
Contrast with white12.59:1WCAG normal text: AAA
Contrast with black1.67:1WCAG normal text: Fail
Greyscale equivalent#151515
Inverted#FBF550

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#003CB3no red cones; affects about 1% of men; ΔE 28.8 from the original
Deuteranopia#002AADno green cones; the most common form, about 1% of men; ΔE 17.7 from the original
Tritanopia#004966no blue cones; rare, and affects men and women equally; ΔE 87.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text12.59:1WCAG large text: AAA
Contrast with black, large text1.67:1WCAG large text: Fail

Named colours

Dark blue · ΔE 14.6Medium blue · ΔE 15.8Navy · ΔE 19.8Blue violet · ΔE 24.9Indigo · ΔE 27Dark violet · ΔE 28.1
Nearest named CSS colourDark blue (#00008B)ΔE 14.56, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#AFA904
Analogous#0460AF, #5304AF
Triadic#AF040A, #0AAF04
Split complementary#AF5304, #60AF04
Tetradic#AF0460, #AFA904, #04AF53

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8387FC
Lighter +30%#5157FB
Lighter +20%#1F27FA
Lighter +10%#050DE1
Darker −10%#03077D
Darker −20%#02044B
Darker −30%#010119
Darker −40%#000000
More saturated +25%#0006B3
Less saturated −25%#1A1F99

Channel breakdown

R4
G10
B175
Red4 (1.6%)
Green10 (3.9%)
Blue175 (68.6%)
Hue237.89°
Saturation (HSL)95.53%
Lightness35.1%
Dominant channelBlue
Hex per channelR 04 · G 0A · B AF

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Every value on this page was computed from “040aaf” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.