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Recognised as Colour

#357E9B

  • #357E9B
  • Cyan
  • Dark
  • Nearest: Steel blue

#357E9B is a cyan with RGB values 53, 126, 155 and HSL 197°, 49%, 41%. It is a dark colour, so black text on it reaches 4.6:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#357E9B#357E9B
HEX#357E9B
RGBrgb(53, 126, 155)
RGB (0–1)0.2078, 0.4941, 0.6078
RGB percentages20.8%, 49.4%, 60.8%
HSLhsl(197.1, 49%, 40.8%)
HSV / HSBhsv(197.1, 65.8%, 60.8%)
CMYK65.8%, 18.7%, 0%, 39.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,505,819
CSS custom property--colour: #357E9B;

Brightness & contrast

Relative luminance0.18045WCAG 2.x, 0 is black and 1 is white
Perceived brightness113.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.61:1
Contrast with white4.56:1WCAG normal text: AA
Contrast with black4.61:1WCAG normal text: AA
Greyscale equivalent#717171
Inverted#CA8164

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#6F7C9Cno red cones; affects about 1% of men; ΔE 16.7 from the original
Deuteranopia#60719Bno green cones; the most common form, about 1% of men; ΔE 18.1 from the original
Tritanopia#008687no blue cones; rare, and affects men and women equally; ΔE 20.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text4.56:1WCAG large text: AAA
Contrast with black, large text4.61:1WCAG large text: AAA

Named colours

Steel blue · ΔE 13.8Slate grey · ΔE 16.5Light slate grey · ΔE 16.9Cadetblue · ΔE 19.9Teal · ΔE 20.8Dark cyan · ΔE 22
Nearest named CSS colourSteel blue (#4682B4)ΔE 13.84, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#9B5235
Analogous#359B85, #354B9B
Triadic#9B357E, #7E9B35
Split complementary#9B354B, #9B8535
Tetradic#85359B, #9B5235, #4B9B35

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B6D8E6
Lighter +30%#90C4D9
Lighter +20%#6AB0CC
Lighter +10%#449CBF
Darker −10%#285F75
Darker −20%#1B404F
Darker −30%#0E2129
Darker −40%#010203
More saturated +25%#1B89B5
Less saturated −25%#4F7381

Channel breakdown

R53
G126
B155
Red53 (20.8%)
Green126 (49.4%)
Blue155 (60.8%)
Hue197.06°
Saturation (HSL)49.04%
Lightness40.78%
Dominant channelBlue
Hex per channelR 35 · G 7E · B 9B

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Every value on this page was computed from “357e9b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.