Colour

#647A87

#647A87
Blue
Dark
Nearest: Slate grey

#647A87 is a blue with RGB values 100, 122, 135 and HSL 202°, 15%, 46%. It is a dark colour, so black text on it reaches 4.7:1 contrast (AA for normal text). The nearest named colour is Slate grey.

Colour values

#647A87#647A87

HEX#647A87

RGBrgb(100, 122, 135)

RGB (0–1)0.3922, 0.4784, 0.5294

RGB percentages39.2%, 47.8%, 52.9%

HSLhsl(202.3, 14.9%, 46.1%)

HSV / HSBhsv(202.3, 25.9%, 52.9%)

CMYK25.9%, 9.6%, 0%, 47.1%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer6,584,967

CSS custom property--colour: #647A87;

Brightness & contrast

Relative luminance0.18378WCAG 2.x, 0 is black and 1 is white

Perceived brightness117.5 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 4.68:1

Contrast with white4.49:1WCAG normal text: Fail

Contrast with black4.68:1WCAG normal text: AA

Greyscale equivalent#767676

Inverted#9B8578

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#747988no red cones; affects about 1% of men; ΔE 6.4 from the original

Deuteranopia#6F7587no green cones; the most common form, about 1% of men; ΔE 6.7 from the original

Tritanopia#5A7E7Eno blue cones; rare, and affects men and women equally; ΔE 9.6 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text4.49:1WCAG large text: AA

Contrast with black, large text4.68:1WCAG large text: AAA

Named colours

Slate grey · ΔE 4.1 Light slate grey · ΔE 6.7 Gray · ΔE 11.5 Dim grey · ΔE 12.2 Cadetblue · ΔE 18.7 Dark slate grey · ΔE 20.8

Nearest named CSS colourSlate grey (#708090)ΔE 4.05, a close match

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#877164

Analogous#648782, #646987

Triadic#87647A, #7A8764

Split complementary#876469, #878364

Tetradic#826487, #877164, #698764

Tints, shades & saturation

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

Lighter +40%#D6DDE1

Lighter +30%#B9C4CB

Lighter +20%#9CACB5

Lighter +10%#7E93A0

Darker −10%#4E606A

Darker −20%#39454C

Darker −30%#232B2F

Darker −40%#0D1012

More saturated +25%#4782A4

Less saturated −25%#767676

Channel breakdown

R100

G122

B135

Red100 (39.2%)

Green122 (47.8%)

Blue135 (52.9%)

Hue202.29°

Saturation (HSL)14.89%

Lightness46.08%

Dominant channelBlue

Hex per channelR 64 · G 7A · B 87

Keep nerding

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

#647A87

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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