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Colour

#366E8A

  • #366E8A
  • Blue
  • Dark
  • Nearest: Steel blue

#366E8A is a blue with RGB values 54, 110, 138 and HSL 200°, 44%, 38%. It is a dark colour, so white text on it reaches 5.6:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#366E8A#366E8A
HEX#366E8A
RGBrgb(54, 110, 138)
RGB (0–1)0.2118, 0.4314, 0.5412
RGB percentages21.2%, 43.1%, 54.1%
HSLhsl(200, 43.7%, 37.6%)
HSV / HSBhsv(200, 60.9%, 54.1%)
CMYK60.9%, 20.3%, 0%, 45.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,567,242
CSS custom property--colour: #366E8A;

Brightness & contrast

Relative luminance0.13771WCAG 2.x, 0 is black and 1 is white
Perceived brightness100.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.59:1
Contrast with white5.59:1WCAG normal text: AA
Contrast with black3.75:1WCAG normal text: Fail
Greyscale equivalent#646464
Inverted#C99175

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#606D8Bno red cones; affects about 1% of men; ΔE 12.7 from the original
Deuteranopia#55648Ano green cones; the most common form, about 1% of men; ΔE 14.2 from the original
Tritanopia#007677no blue cones; rare, and affects men and women equally; ΔE 21.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text5.59:1WCAG large text: AAA
Contrast with black, large text3.75:1WCAG large text: AA

Named colours

Steel blue · ΔE 15.2Slate grey · ΔE 15.6Light slate grey · ΔE 17.2Dark slate grey · ΔE 21.5Dim grey · ΔE 23Teal · ΔE 23.3
Nearest named CSS colourSteel blue (#4682B4)ΔE 15.18, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8A5236
Analogous#368A7C, #36448A
Triadic#8A366E, #6E8A36
Split complementary#8A3644, #8A7C36
Tetradic#7C368A, #8A5236, #448A36

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#ADCEDF
Lighter +30%#88B9D1
Lighter +20%#64A3C2
Lighter +10%#448BAF
Darker −10%#285165
Darker −20%#193441
Darker −30%#0B161C
Darker −40%#000000
More saturated +25%#1E76A2
Less saturated −25%#4E6672

Channel breakdown

R54
G110
B138
Red54 (21.2%)
Green110 (43.1%)
Blue138 (54.1%)
Hue200°
Saturation (HSL)43.75%
Lightness37.65%
Dominant channelBlue
Hex per channelR 36 · G 6E · B 8A

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Every value on this page was computed from “366e8a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.