Colour

#0A5188

#0A5188
Blue
Dark
Nearest: Steel blue

#0A5188 is a blue with RGB values 10, 81, 136 and HSL 206°, 86%, 29%. It is a dark colour, so white text on it reaches 8.3:1 contrast (AAA for normal text). The nearest named colour is Steel blue.

Colour values

#0A5188#0A5188

HEX#0A5188

RGBrgb(10, 81, 136)

RGB (0–1)0.0392, 0.3176, 0.5333

RGB percentages3.9%, 31.8%, 53.3%

HSLhsl(206.2, 86.3%, 28.6%)

HSV / HSBhsv(206.2, 92.6%, 53.3%)

CMYK92.6%, 40.4%, 0%, 46.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer676,232

CSS custom property--colour: #0A5188;

Brightness & contrast

Relative luminance0.07727WCAG 2.x, 0 is black and 1 is white

Perceived brightness77.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 8.25:1

Contrast with white8.25:1WCAG normal text: AAA

Contrast with black2.55:1WCAG normal text: Fail

Greyscale equivalent#464646

Inverted#F5AE77

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#36548Ano red cones; affects about 1% of men; ΔE 6.2 from the original

Deuteranopia#224A87no green cones; the most common form, about 1% of men; ΔE 7.2 from the original

Tritanopia#005E66no blue cones; rare, and affects men and women equally; ΔE 33.3 from the original

Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning

Contrast with white, large text8.25:1WCAG large text: AAA

Contrast with black, large text2.55:1WCAG large text: Fail

Named colours

Steel blue · ΔE 20.3 Dark slateblue · ΔE 25.3 Cornflower blue · ΔE 32.3 Slate grey · ΔE 32.4 Light slate grey · ΔE 34 Dark slate grey · ΔE 35.2

Nearest named CSS colourSteel blue (#4682B4)ΔE 20.3, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#88410A

Analogous#0A8880, #0A1288

Triadic#880A51, #51880A

Split complementary#880A12, #88800A

Tetradic#800A88, #88410A, #12880A

Tints, shades & saturation

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

Lighter +40%#6AB8F4

Lighter +30%#3AA1F1

Lighter +20%#118AE7

Lighter +10%#0D6DB8

Darker −10%#073558

Darker −20%#031829

Darker −30%#000000

Darker −40%#000000

More saturated +25%#005292

Less saturated −25%#1C4F76

Channel breakdown

R10

G81

B136

Red10 (3.9%)

Green81 (31.8%)

Blue136 (53.3%)

Hue206.19°

Saturation (HSL)86.3%

Lightness28.63%

Dominant channelBlue

Hex per channelR 0A · G 51 · B 88

Keep nerding

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#0A5188

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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