Colour

#00185B

#00185B
Blue
Dark
Nearest: Midnight blue

#00185B is a blue with RGB values 0, 24, 91 and HSL 224°, 100%, 18%. It is a dark colour, so white text on it reaches 16.4:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#00185B#00185B

HEX#00185B

RGBrgb(0, 24, 91)

RGB (0–1)0, 0.0941, 0.3569

RGB percentages0%, 9.4%, 35.7%

HSLhsl(224.2, 100%, 17.8%)

HSV / HSBhsv(224.2, 100%, 35.7%)

CMYK100%, 73.6%, 0%, 64.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer6,235

CSS custom property--colour: #00185B;

Brightness & contrast

Relative luminance0.01409WCAG 2.x, 0 is black and 1 is white

Perceived brightness35.8 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 16.38:1

Contrast with white16.38:1WCAG normal text: AAA

Contrast with black1.28:1WCAG normal text: Fail

Greyscale equivalent#181818

Inverted#FFE7A4

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#00245Dno red cones; affects about 1% of men; ΔE 10.2 from the original

Deuteranopia#001B5Ano green cones; the most common form, about 1% of men; ΔE 3.4 from the original

Tritanopia#002B37no blue cones; rare, and affects men and women equally; ΔE 43.5 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text16.38:1WCAG large text: AAA

Contrast with black, large text1.28:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 12.8 Dark slateblue · ΔE 19.2 Rebecca purple · ΔE 29.9 Indigo · ΔE 32.8 Navy · ΔE 34.1 Dark blue · ΔE 39

Nearest named CSS colourMidnight blue (#191970)ΔE 12.81, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#5B4300

Analogous#00465B, #15005B

Triadic#5B0018, #185B00

Split complementary#5B1600, #465B00

Tetradic#5B0046, #5B4300, #005B16

Tints, shades & saturation

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

Lighter +40%#2861FF

Lighter +30%#0040F4

Lighter +20%#0033C1

Lighter +10%#00258E

Darker −10%#000B28

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#00185B

Less saturated −25%#0B1D50

Channel breakdown

G24

B91

Red0 (0%)

Green24 (9.4%)

Blue91 (35.7%)

Hue224.18°

Saturation (HSL)100%

Lightness17.84%

Dominant channelBlue

Hex per channelR 00 · G 18 · B 5B

Keep nerding

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#00185B

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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