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Colour

#51617D

  • #51617D
  • Blue
  • Dark
  • Nearest: Slate grey

#51617D is a blue with RGB values 81, 97, 125 and HSL 218°, 21%, 40%. It is a dark colour, so white text on it reaches 6.3:1 contrast (AA for normal text). The nearest named colour is Slate grey.

Colour values

#51617D#51617D
HEX#51617D
RGBrgb(81, 97, 125)
RGB (0–1)0.3176, 0.3804, 0.4902
RGB percentages31.8%, 38%, 49%
HSLhsl(218.2, 21.4%, 40.4%)
HSV / HSBhsv(218.2, 35.2%, 49%)
CMYK35.2%, 22.4%, 0%, 51%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,333,373
CSS custom property--colour: #51617D;

Brightness & contrast

Relative luminance0.11779WCAG 2.x, 0 is black and 1 is white
Perceived brightness96.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.26:1
Contrast with white6.26:1WCAG normal text: AA
Contrast with black3.36:1WCAG normal text: Fail
Greyscale equivalent#606060
Inverted#AE9E82

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#57637Eno red cones; affects about 1% of men; ΔE 1.8 from the original
Deuteranopia#535E7Cno green cones; the most common form, about 1% of men; ΔE 2.4 from the original
Tritanopia#44676Ano blue cones; rare, and affects men and women equally; ΔE 17.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text6.26:1WCAG large text: AAA
Contrast with black, large text3.36:1WCAG large text: AA

Named colours

Slate grey · ΔE 14.3Light slate grey · ΔE 16.8Dim grey · ΔE 18Steel blue · ΔE 19.4Dark slate grey · ΔE 21.3Gray · ΔE 21.8
Nearest named CSS colourSlate grey (#708090)ΔE 14.32, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#7D6D51
Analogous#51777D, #57517D
Triadic#7D5161, #617D51
Split complementary#7D5751, #777D51
Tetradic#7D5177, #7D6D51, #517D57

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C2CAD8
Lighter +30%#A3AFC4
Lighter +20%#8494B0
Lighter +10%#65799C
Darker −10%#3D495E
Darker −20%#29313F
Darker −30%#151920
Darker −40%#010101
More saturated +25%#375A97
Less saturated −25%#676767

Channel breakdown

R81
G97
B125
Red81 (31.8%)
Green97 (38%)
Blue125 (49%)
Hue218.18°
Saturation (HSL)21.36%
Lightness40.39%
Dominant channelBlue
Hex per channelR 51 · G 61 · B 7D

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Every value on this page was computed from “51617d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.