Colour

#00174E

#00174E
Blue
Dark
Nearest: Midnight blue

#00174E is a blue with RGB values 0, 23, 78 and HSL 222°, 100%, 15%. It is a dark colour, so white text on it reaches 17:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#00174E#00174E

HEX#00174E

RGBrgb(0, 23, 78)

RGB (0–1)0, 0.0902, 0.3059

RGB percentages0%, 9%, 30.6%

HSLhsl(222.3, 100%, 15.3%)

HSV / HSBhsv(222.3, 100%, 30.6%)

CMYK100%, 70.5%, 0%, 69.4%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer5,966

CSS custom property--colour: #00174E;

Brightness & contrast

Relative luminance0.01163WCAG 2.x, 0 is black and 1 is white

Perceived brightness31.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 17.04:1

Contrast with white17.04:1WCAG normal text: AAA

Contrast with black1.23:1WCAG normal text: Fail

Greyscale equivalent#161616

Inverted#FFE8B1

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#002050no red cones; affects about 1% of men; ΔE 7.7 from the original

Deuteranopia#00184Dno green cones; the most common form, about 1% of men; ΔE 1.6 from the original

Tritanopia#002630no blue cones; rare, and affects men and women equally; ΔE 36.6 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text17.04:1WCAG large text: AAA

Contrast with black, large text1.23:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 20.7 Dark slateblue · ΔE 23.2 Rebecca purple · ΔE 36.1 Indigo · ΔE 40 Black · ΔE 41.2 Navy · ΔE 41.9

Nearest named CSS colourMidnight blue (#191970)ΔE 20.72, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#4E3700

Analogous#003E4E, #10004E

Triadic#4E0017, #174E00

Split complementary#4E1000, #3E4E00

Tetradic#4E003E, #4E3700, #004E10

Tints, shades & saturation

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

Lighter +40%#1B5EFF

Lighter +30%#0044E7

Lighter +20%#0035B4

Lighter +10%#002681

Darker −10%#00081B

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#00174E

Less saturated −25%#0A1B44

Channel breakdown

G23

B78

Red0 (0%)

Green23 (9%)

Blue78 (30.6%)

Hue222.31°

Saturation (HSL)100%

Lightness15.29%

Dominant channelBlue

Hex per channelR 00 · G 17 · B 4E

Keep nerding

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#00174E

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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