Colour

#0A172D

#0A172D
Blue
Dark
Nearest: Black

#0A172D is a blue with RGB values 10, 23, 45 and HSL 218°, 64%, 11%. It is a dark colour, so white text on it reaches 17.9:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#0A172D#0A172D

HEX#0A172D

RGBrgb(10, 23, 45)

RGB (0–1)0.0392, 0.0902, 0.1765

RGB percentages3.9%, 9%, 17.6%

HSLhsl(217.7, 63.6%, 10.8%)

HSV / HSBhsv(217.7, 77.8%, 17.6%)

CMYK77.8%, 48.9%, 0%, 82.4%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer661,293

CSS custom property--colour: #0A172D;

Brightness & contrast

Relative luminance0.00867WCAG 2.x, 0 is black and 1 is white

Perceived brightness23.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 17.9:1

Contrast with white17.9:1WCAG normal text: AAA

Contrast with black1.17:1WCAG normal text: Fail

Greyscale equivalent#161616

Inverted#F5E8D2

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#0D192Eno red cones; affects about 1% of men; ΔE 1.3 from the original

Deuteranopia#08162Dno green cones; the most common form, about 1% of men; ΔE 0.9 from the original

Tritanopia#001C1Fno blue cones; rare, and affects men and women equally; ΔE 16.7 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text17.9:1WCAG large text: AAA

Contrast with black, large text1.17:1WCAG large text: Fail

Named colours

Black · ΔE 18.6 Dark slate grey · ΔE 30.6 Dim grey · ΔE 40.3 Dark slateblue · ΔE 41.2 Midnight blue · ΔE 44.3 Slate grey · ΔE 45.7

Nearest named CSS colourBlack (#000000)ΔE 18.57, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#2D200A

Analogous#0A282D, #0F0A2D

Triadic#2D0A17, #172D0A

Split complementary#2D0F0A, #292D0A

Tetradic#2D0A28, #2D200A, #0A2D0F

Tints, shades & saturation

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

Lighter +40%#326DD1

Lighter +30%#2657AA

Lighter +20%#1D4280

Lighter +10%#132C57

Darker −10%#010203

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#031534

Less saturated −25%#111926

Channel breakdown

R10

G23

B45

Red10 (3.9%)

Green23 (9%)

Blue45 (17.6%)

Hue217.71°

Saturation (HSL)63.64%

Lightness10.78%

Dominant channelBlue

Hex per channelR 0A · G 17 · B 2D

Keep nerding

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

#0A172D

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

Nerdulate something else