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Recognised as Colour

#358BB5

  • #358BB5
  • Cyan
  • Dark
  • Nearest: Steel blue

#358BB5 is a cyan with RGB values 53, 139, 181 and HSL 200°, 55%, 46%. It is a dark colour, so black text on it reaches 5.5:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#358BB5#358BB5
HEX#358BB5
RGBrgb(53, 139, 181)
RGB (0–1)0.2078, 0.5451, 0.7098
RGB percentages20.8%, 54.5%, 71%
HSLhsl(199.7, 54.7%, 45.9%)
HSV / HSBhsv(199.7, 70.7%, 71%)
CMYK70.7%, 23.2%, 0%, 29%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,509,173
CSS custom property--colour: #358BB5;

Brightness & contrast

Relative luminance0.22558WCAG 2.x, 0 is black and 1 is white
Perceived brightness126.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.51:1
Contrast with white3.81:1WCAG normal text: Fail
Contrast with black5.51:1WCAG normal text: AA
Greyscale equivalent#7C7C7C
Inverted#CA744A

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#768AB7no red cones; affects about 1% of men; ΔE 16.4 from the original
Deuteranopia#657DB4no green cones; the most common form, about 1% of men; ΔE 18.1 from the original
Tritanopia#009699no blue cones; rare, and affects men and women equally; ΔE 26.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.81:1WCAG large text: AA
Contrast with black, large text5.51:1WCAG large text: AAA

Named colours

Steel blue · ΔE 8.5Light slate grey · ΔE 20.7Slate grey · ΔE 21.3Deep skyblue · ΔE 23Cadetblue · ΔE 24.3Light skyblue · ΔE 25.1
Nearest named CSS colourSteel blue (#4682B4)ΔE 8.48, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B55F35
Analogous#35B59F, #354BB5
Triadic#B5358B, #8BB535
Split complementary#B5354B, #B59F35
Tetradic#9F35B5, #B55F35, #4BB535

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C7E2EF
Lighter +30%#A0CDE3
Lighter +20%#78B8D8
Lighter +10%#51A4CC
Darker −10%#296D8E
Darker −20%#1E4E66
Darker −30%#12303F
Darker −40%#071217
More saturated +25%#1895D2
Less saturated −25%#528198

Channel breakdown

R53
G139
B181
Red53 (20.8%)
Green139 (54.5%)
Blue181 (71%)
Hue199.69°
Saturation (HSL)54.7%
Lightness45.88%
Dominant channelBlue
Hex per channelR 35 · G 8B · B B5

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Every value on this page was computed from “358bb5” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.