Colour

#636D87

#636D87
Blue
Dark
Nearest: Slate grey

#636D87 is a blue with RGB values 99, 109, 135 and HSL 223°, 15%, 46%. It is a dark colour, so white text on it reaches 5.2:1 contrast (AA for normal text). The nearest named colour is Slate grey.

Colour values

#636D87#636D87

HEX#636D87

RGBrgb(99, 109, 135)

RGB (0–1)0.3882, 0.4275, 0.5294

RGB percentages38.8%, 42.7%, 52.9%

HSLhsl(223.3, 15.4%, 45.9%)

HSV / HSBhsv(223.3, 26.7%, 52.9%)

CMYK26.7%, 19.3%, 0%, 47.1%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer6,516,103

CSS custom property--colour: #636D87;

Brightness & contrast

Relative luminance0.15339WCAG 2.x, 0 is black and 1 is white

Perceived brightness109.5 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.16:1

Contrast with white5.16:1WCAG normal text: AA

Contrast with black4.07:1WCAG normal text: Fail

Greyscale equivalent#6D6D6D

Inverted#9C9278

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#656F88no red cones; affects about 1% of men; ΔE 1 from the original

Deuteranopia#626C86no green cones; the most common form, about 1% of men; ΔE 0.4 from the original

Tritanopia#5A7276no blue cones; rare, and affects men and women equally; ΔE 14.6 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text5.16:1WCAG large text: AAA

Contrast with black, large text4.07:1WCAG large text: AA

Named colours

Slate grey · ΔE 9.6 Light slate grey · ΔE 11.8 Dim grey · ΔE 15.8 Gray · ΔE 17.4 Steel blue · ΔE 19 Dark slate grey · ΔE 23.7

Nearest named CSS colourSlate grey (#708090)ΔE 9.57, clearly different but related

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#877D63

Analogous#637F87, #6B6387

Triadic#87636D, #6D8763

Split complementary#876B63, #7F8763

Tetradic#87637F, #877D63, #63876B

Tints, shades & saturation

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

Lighter +40%#D5D9E1

Lighter +30%#B8BDCB

Lighter +20%#9BA2B5

Lighter +10%#7D87A0

Darker −10%#4D556A

Darker −20%#383D4C

Darker −30%#22262F

Darker −40%#0D0E11

More saturated +25%#4660A4

Less saturated −25%#757575

Channel breakdown

R99

G109

B135

Red99 (38.8%)

Green109 (42.7%)

Blue135 (52.9%)

Hue223.33°

Saturation (HSL)15.38%

Lightness45.88%

Dominant channelBlue

Hex per channelR 63 · G 6D · B 87

Keep nerding

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

#636D87

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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