Recognised as Colour

#636D99

#636D99
Blue
Dark
Nearest: Steel blue

#636D99 is a blue with RGB values 99, 109, 153 and HSL 229°, 21%, 49%. It is a dark colour, so white text on it reaches 5:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#636D99#636D99

HEX#636D99

RGBrgb(99, 109, 153)

RGB (0–1)0.3882, 0.4275, 0.6

RGB percentages38.8%, 42.7%, 60%

HSLhsl(228.9, 21.4%, 49.4%)

HSV / HSBhsv(228.9, 35.3%, 60%)

CMYK35.3%, 28.8%, 0%, 40%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer6,516,121

CSS custom property--colour: #636D99;

Brightness & contrast

Relative luminance0.1589WCAG 2.x, 0 is black and 1 is white

Perceived brightness112.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.03:1

Contrast with white5.03:1WCAG normal text: AA

Contrast with black4.18:1WCAG normal text: Fail

Greyscale equivalent#6E6E6E

Inverted#9C9266

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#5F719Bno red cones; affects about 1% of men; ΔE 3.2 from the original

Deuteranopia#5B6D98no green cones; the most common form, about 1% of men; ΔE 2.7 from the original

Tritanopia#54767Cno blue cones; rare, and affects men and women equally; ΔE 25.3 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text5.03:1WCAG large text: AAA

Contrast with black, large text4.18:1WCAG large text: AA

Named colours

Steel blue · ΔE 14.6 Slate grey · ΔE 18.4 Light slate grey · ΔE 19.2 Dim grey · ΔE 26.3 Gray · ΔE 27 Cornflower blue · ΔE 28.6

Nearest named CSS colourSteel blue (#4682B4)ΔE 14.56, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#998F63

Analogous#638899, #746399

Triadic#99636D, #6D9963

Split complementary#997463, #889963

Tetradic#996388, #998F63, #639974

Tints, shades & saturation

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

Lighter +40%#DEE0EA

Lighter +30%#BFC3D6

Lighter +20%#A0A6C2

Lighter +10%#818AAE

Darker −10%#4F577A

Darker −20%#3B415B

Darker −30%#272B3C

Darker −40%#13151D

More saturated +25%#4459B9

Less saturated −25%#7E7E7E

Channel breakdown

R99

G109

B153

Red99 (38.8%)

Green109 (42.7%)

Blue153 (60%)

Hue228.89°

Saturation (HSL)21.43%

Lightness49.41%

Dominant channelBlue

Hex per channelR 63 · G 6D · B 99

Keep nerding

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

#636D99

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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