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Colour

#04186E

  • #04186E
  • Blue
  • Dark
  • Nearest: Midnight blue

#04186E is a blue with RGB values 4, 24, 110 and HSL 229°, 93%, 22%. It is a dark colour, so white text on it reaches 15.4:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#04186E#04186E
HEX#04186E
RGBrgb(4, 24, 110)
RGB (0–1)0.0157, 0.0941, 0.4314
RGB percentages1.6%, 9.4%, 43.1%
HSLhsl(228.7, 93%, 22.4%)
HSV / HSBhsv(228.7, 96.4%, 43.1%)
CMYK96.4%, 78.2%, 0%, 56.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer268,398
CSS custom property--colour: #04186E;

Brightness & contrast

Relative luminance0.01805WCAG 2.x, 0 is black and 1 is white
Perceived brightness41.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 15.43:1
Contrast with white15.43:1WCAG normal text: AAA
Contrast with black1.36:1WCAG normal text: Fail
Greyscale equivalent#1A1A1A
Inverted#FBE791

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#002A71no red cones; affects about 1% of men; ΔE 14.2 from the original
Deuteranopia#001F6Dno green cones; the most common form, about 1% of men; ΔE 6.5 from the original
Tritanopia#003242no blue cones; rare, and affects men and women equally; ΔE 53.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text15.43:1WCAG large text: AAA
Contrast with black, large text1.36:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 2.4Dark slateblue · ΔE 19Navy · ΔE 22.4Indigo · ΔE 22.5Rebecca purple · ΔE 22.7Dark blue · ΔE 27.1
Nearest named CSS colourMidnight blue (#191970)ΔE 2.39, a close match
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#6E5A04
Analogous#044D6E, #25046E
Triadic#6E0418, #186E04
Split complementary#6E2504, #4D6E04
Tetradic#6E044D, #6E5A04, #046E25

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#4667F8
Lighter +30%#153FF6
Lighter +20%#082DD0
Lighter +10%#06239F
Darker −10%#020D3D
Darker −20%#00030C
Darker −30%#000000
Darker −40%#000000
More saturated +25%#001672
Less saturated −25%#122160

Channel breakdown

R4
G24
B110
Red4 (1.6%)
Green24 (9.4%)
Blue110 (43.1%)
Hue228.68°
Saturation (HSL)92.98%
Lightness22.35%
Dominant channelBlue
Hex per channelR 04 · G 18 · B 6E

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Every value on this page was computed from “04186e” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.