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Colour

#337AA2

  • #337AA2
  • Blue
  • Dark
  • Nearest: Steel blue

#337AA2 is a blue with RGB values 51, 122, 162 and HSL 202°, 52%, 42%. It is a dark colour, so white text on it reaches 4.7:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#337AA2#337AA2
HEX#337AA2
RGBrgb(51, 122, 162)
RGB (0–1)0.2, 0.4784, 0.6353
RGB percentages20%, 47.8%, 63.5%
HSLhsl(201.6, 52.1%, 41.8%)
HSV / HSBhsv(201.6, 68.5%, 63.5%)
CMYK68.5%, 24.7%, 0%, 36.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,373,730
CSS custom property--colour: #337AA2;

Brightness & contrast

Relative luminance0.17232WCAG 2.x, 0 is black and 1 is white
Perceived brightness111.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 4.72:1
Contrast with white4.72:1WCAG normal text: AA
Contrast with black4.45:1WCAG normal text: Fail
Greyscale equivalent#6E6E6E
Inverted#CC855D

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#6779A4no red cones; affects about 1% of men; ΔE 13.8 from the original
Deuteranopia#586EA1no green cones; the most common form, about 1% of men; ΔE 15.2 from the original
Tritanopia#008488no blue cones; rare, and affects men and women equally; ΔE 25.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text4.72:1WCAG large text: AAA
Contrast with black, large text4.45:1WCAG large text: AA

Named colours

Steel blue · ΔE 7.6Slate grey · ΔE 19.1Light slate grey · ΔE 19.5Cadetblue · ΔE 26.3Teal · ΔE 27.8Dark cyan · ΔE 29
Nearest named CSS colourSteel blue (#4682B4)ΔE 7.58, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A25B33
Analogous#33A293, #3342A2
Triadic#A2337A, #7AA233
Split complementary#A23342, #A29233
Tetradic#9333A2, #A25B33, #43A233

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B8D7E9
Lighter +30%#91C1DD
Lighter +20%#6BACD0
Lighter +10%#4496C4
Darker −10%#275D7B
Darker −20%#1B4054
Darker −30%#0E222E
Darker −40%#020507
More saturated +25%#1881BD
Less saturated −25%#4E7387

Channel breakdown

R51
G122
B162
Red51 (20%)
Green122 (47.8%)
Blue162 (63.5%)
Hue201.62°
Saturation (HSL)52.11%
Lightness41.76%
Dominant channelBlue
Hex per channelR 33 · G 7A · B A2

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Every value on this page was computed from “337aa2” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.