Recognised as Colour

#040F27

#040F27
Blue
Dark
Nearest: Black

#040F27 is a blue with RGB values 4, 15, 39 and HSL 221°, 81%, 8%. It is a dark colour, so white text on it reaches 19:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#040F27#040F27

HEX#040F27

RGBrgb(4, 15, 39)

RGB (0–1)0.0157, 0.0588, 0.1529

RGB percentages1.6%, 5.9%, 15.3%

HSLhsl(221.1, 81.4%, 8.4%)

HSV / HSBhsv(221.1, 89.7%, 15.3%)

CMYK89.7%, 61.5%, 0%, 84.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer266,023

CSS custom property--colour: #040F27;

Brightness & contrast

Relative luminance0.00514WCAG 2.x, 0 is black and 1 is white

Perceived brightness17.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 19.04:1

Contrast with white19.04:1WCAG normal text: AAA

Contrast with black1.1:1WCAG normal text: Fail

Greyscale equivalent#0E0E0E

Inverted#FBF0D8

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#031228no red cones; affects about 1% of men; ΔE 1.8 from the original

Deuteranopia#000E27no green cones; the most common form, about 1% of men; ΔE 1.1 from the original

Tritanopia#001519no blue cones; rare, and affects men and women equally; ΔE 15.3 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text19.04:1WCAG large text: AAA

Contrast with black, large text1.1:1WCAG large text: Fail

Named colours

Black · ΔE 18.1 Dark slate grey · ΔE 33.7 Dark slateblue · ΔE 42.4 Dim grey · ΔE 43.5 Midnight blue · ΔE 44.1 Slate grey · ΔE 49

Nearest named CSS colourBlack (#000000)ΔE 18.14, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#271C04

Analogous#042127, #0A0427

Triadic#27040F, #0F2704

Split complementary#270B04, #202704

Tetradic#270421, #271C04, #04270B

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#1756E0

Lighter +30%#1244B2

Lighter +20%#0D3384

Lighter +10%#092155

Darker −10%#000000

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#000E2B

Less saturated −25%#091122

Channel breakdown

G15

B39

Red4 (1.6%)

Green15 (5.9%)

Blue39 (15.3%)

Hue221.14°

Saturation (HSL)81.4%

Lightness8.43%

Dominant channelBlue

Hex per channelR 04 · G 0F · B 27

Keep nerding

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

#040F27

Colour values

Brightness & contrast

Colour vision & accessibility

Named colours

Colour harmonies

Tints, shades & saturation

Channel breakdown

Keep nerding

Harmonies

Lighter and darker

Similar named colours

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