Colour

#637B96

#637B96
Blue
Dark
Nearest: Slate grey

#637B96 is a blue with RGB values 99, 123, 150 and HSL 212°, 20%, 49%. It is a dark colour, so black text on it reaches 4.8:1 contrast (AA for normal text). The nearest named colour is Slate grey.

Colour values

#637B96#637B96

HEX#637B96

RGBrgb(99, 123, 150)

RGB (0–1)0.3882, 0.4824, 0.5882

RGB percentages38.8%, 48.2%, 58.8%

HSLhsl(211.8, 20.5%, 48.8%)

HSV / HSBhsv(211.8, 34%, 58.8%)

CMYK34%, 18%, 0%, 41.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer6,519,702

CSS custom property--colour: #637B96;

Brightness & contrast

Relative luminance0.19021WCAG 2.x, 0 is black and 1 is white

Perceived brightness119.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 4.8:1

Contrast with white4.37:1WCAG normal text: Fail

Contrast with black4.8:1WCAG normal text: AA

Greyscale equivalent#787878

Inverted#9C8469

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#717C97no red cones; affects about 1% of men; ΔE 4.5 from the original

Deuteranopia#6B7695no green cones; the most common form, about 1% of men; ΔE 5.3 from the original

Tritanopia#538184no blue cones; rare, and affects men and women equally; ΔE 16.9 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text4.37:1WCAG large text: AA

Contrast with black, large text4.8:1WCAG large text: AAA

Named colours

Slate grey · ΔE 7.1 Light slate grey · ΔE 8.2 Steel blue · ΔE 15.1 Gray · ΔE 17.7 Dim grey · ΔE 18.6 Cadetblue · ΔE 22.9

Nearest named CSS colourSlate grey (#708090)ΔE 7.14, clearly different but related

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#967E63

Analogous#639596, #656396

Triadic#96637B, #7B9663

Split complementary#966563, #959663

Tetradic#966395, #967E63, #639665

Tints, shades & saturation

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

Lighter +40%#DDE2E8

Lighter +30%#BEC8D4

Lighter +20%#9FAFC0

Lighter +10%#8095AC

Darker −10%#4F6277

Darker −20%#3A4959

Darker −30%#262F3A

Darker −40%#12161B

More saturated +25%#4479B5

Less saturated −25%#7D7D7D

Channel breakdown

R99

G123

B150

Red99 (38.8%)

Green123 (48.2%)

Blue150 (58.8%)

Hue211.76°

Saturation (HSL)20.48%

Lightness48.82%

Dominant channelBlue

Hex per channelR 63 · G 7B · B 96

Keep nerding

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

#637B96

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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