Colour

#4181AD

#4181AD
Blue
Dark
Nearest: Steel blue

#4181AD is a blue with RGB values 65, 129, 173 and HSL 204°, 45%, 47%. It is a dark colour, so black text on it reaches 5:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#4181AD#4181AD

HEX#4181AD

RGBrgb(65, 129, 173)

RGB (0–1)0.2549, 0.5059, 0.6784

RGB percentages25.5%, 50.6%, 67.8%

HSLhsl(204.4, 45.4%, 46.7%)

HSV / HSBhsv(204.4, 62.4%, 67.8%)

CMYK62.4%, 25.4%, 0%, 32.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer4,293,037

CSS custom property--colour: #4181AD;

Brightness & contrast

Relative luminance0.19841WCAG 2.x, 0 is black and 1 is white

Perceived brightness120.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 4.97:1

Contrast with white4.23:1WCAG normal text: Fail

Contrast with black4.97:1WCAG normal text: AA

Greyscale equivalent#777777

Inverted#BE7E52

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6D81AFno red cones; affects about 1% of men; ΔE 11.8 from the original

Deuteranopia#5E76ACno green cones; the most common form, about 1% of men; ΔE 13.1 from the original

Tritanopia#008C90no blue cones; rare, and affects men and women equally; ΔE 29.2 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text4.23:1WCAG large text: AA

Contrast with black, large text4.97:1WCAG large text: AAA

Named colours

Steel blue · ΔE 4 Light slate grey · ΔE 19.4 Slate grey · ΔE 19.5 Deep skyblue · ΔE 26.9 Cadetblue · ΔE 27.2 Cornflower blue · ΔE 27.6

Nearest named CSS colourSteel blue (#4682B4)ΔE 3.95, a close match

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#AD6D41

Analogous#41ADA3, #414BAD

Triadic#AD4181, #81AD41

Split complementary#AD414B, #ADA341

Tetradic#A341AD, #AD6D41, #4BAD41

Tints, shades & saturation

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

Lighter +40%#CEE0EC

Lighter +30%#A8C8DE

Lighter +20%#83B1D1

Lighter +10%#5E9AC3

Darker −10%#336588

Darker −20%#254A63

Darker −30%#172E3E

Darker −40%#091219

More saturated +25%#2387CB

Less saturated −25%#5F7B8F

Channel breakdown

R65

G129

B173

Red65 (25.5%)

Green129 (50.6%)

Blue173 (67.8%)

Hue204.44°

Saturation (HSL)45.38%

Lightness46.67%

Dominant channelBlue

Hex per channelR 41 · G 81 · B AD

Keep nerding

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#4181AD

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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