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Recognised as Colour

#51636E

  • #51636E
  • Blue
  • Dark
  • Nearest: Dim grey

#51636E is a blue with RGB values 81, 99, 110 and HSL 203°, 15%, 37%. It is a dark colour, so white text on it reaches 6.3:1 contrast (AA for normal text). The nearest named colour is Dim grey.

Colour values

#51636E#51636E
HEX#51636E
RGBrgb(81, 99, 110)
RGB (0–1)0.3176, 0.3882, 0.4314
RGB percentages31.8%, 38.8%, 43.1%
HSLhsl(202.8, 15.2%, 37.5%)
HSV / HSBhsv(202.8, 26.4%, 43.1%)
CMYK26.4%, 10%, 0%, 56.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,333,870
CSS custom property--colour: #51636E;

Brightness & contrast

Relative luminance0.11799WCAG 2.x, 0 is black and 1 is white
Perceived brightness95.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.25:1
Contrast with white6.25:1WCAG normal text: AA
Contrast with black3.36:1WCAG normal text: Fail
Greyscale equivalent#606060
Inverted#AE9C91

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5E626Fno red cones; affects about 1% of men; ΔE 5.5 from the original
Deuteranopia#5A5F6Eno green cones; the most common form, about 1% of men; ΔE 5.6 from the original
Tritanopia#496666no blue cones; rare, and affects men and women equally; ΔE 8.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text6.25:1WCAG large text: AAA
Contrast with black, large text3.36:1WCAG large text: AA

Named colours

Dim grey · ΔE 10Slate grey · ΔE 12.3Dark slate grey · ΔE 13.2Light slate grey · ΔE 15.4Gray · ΔE 15.8Cadetblue · ΔE 25.6
Nearest named CSS colourDim grey (#696969)ΔE 10.01, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#6E5C51
Analogous#516E6A, #51556E
Triadic#6E5163, #636E51
Split complementary#6E5155, #6E6B51
Tetradic#6A516E, #6E5C51, #556E51

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#BDC8CE
Lighter +30%#9FAFB9
Lighter +20%#8296A3
Lighter +10%#677D8B
Darker −10%#3B4951
Darker −20%#262E33
Darker −30%#101416
Darker −40%#000000
More saturated +25%#396986
Less saturated −25%#606060

Channel breakdown

R81
G99
B110
Red81 (31.8%)
Green99 (38.8%)
Blue110 (43.1%)
Hue202.76°
Saturation (HSL)15.18%
Lightness37.45%
Dominant channelBlue
Hex per channelR 51 · G 63 · B 6E

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Every value on this page was computed from “51636e” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.