Colour

#010A40

#010A40
Blue
Dark
Nearest: Midnight blue

#010A40 is a blue with RGB values 1, 10, 64 and HSL 231°, 97%, 13%. It is a dark colour, so white text on it reaches 18.8:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#010A40#010A40

HEX#010A40

RGBrgb(1, 10, 64)

RGB (0–1)0.0039, 0.0392, 0.251

RGB percentages0.4%, 3.9%, 25.1%

HSLhsl(231.4, 96.9%, 12.7%)

HSV / HSBhsv(231.4, 98.4%, 25.1%)

CMYK98.4%, 84.4%, 0%, 74.9%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer68,160

CSS custom property--colour: #010A40;

Brightness & contrast

Relative luminance0.00594WCAG 2.x, 0 is black and 1 is white

Perceived brightness22.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 18.77:1

Contrast with white18.77:1WCAG normal text: AAA

Contrast with black1.12:1WCAG normal text: Fail

Greyscale equivalent#0C0C0C

Inverted#FEF5BF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#001542no red cones; affects about 1% of men; ΔE 7.8 from the original

Deuteranopia#000E3Fno green cones; the most common form, about 1% of men; ΔE 3.5 from the original

Tritanopia#001A24no blue cones; rare, and affects men and women equally; ΔE 34.9 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text18.77:1WCAG large text: AAA

Contrast with black, large text1.12:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 22.4 Dark slateblue · ΔE 27.5 Rebecca purple · ΔE 38.5 Black · ΔE 39.7 Indigo · ΔE 40.6 Navy · ΔE 42.2

Nearest named CSS colourMidnight blue (#191970)ΔE 22.36, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#403701

Analogous#012940, #180140

Triadic#40010A, #0A4001

Split complementary#401801, #294001

Tetradic#400129, #403701, #014018

Tints, shades & saturation

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

Lighter +40%#1233FB

Lighter +30%#0322D7

Lighter +20%#031AA4

Lighter +10%#021272

Darker −10%#00020E

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#000941

Less saturated −25%#091038

Channel breakdown

G10

B64

Red1 (0.4%)

Green10 (3.9%)

Blue64 (25.1%)

Hue231.43°

Saturation (HSL)96.92%

Lightness12.75%

Dominant channelBlue

Hex per channelR 01 · G 0A · B 40

Keep nerding

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#010A40

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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