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Recognised as Colour

#337BA0

  • #337BA0
  • Blue
  • Dark
  • Nearest: Steel blue

#337BA0 is a blue with RGB values 51, 123, 160 and HSL 200°, 52%, 41%. 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

#337BA0#337BA0
HEX#337BA0
RGBrgb(51, 123, 160)
RGB (0–1)0.2, 0.4824, 0.6275
RGB percentages20%, 48.2%, 62.7%
HSLhsl(200.4, 51.7%, 41.4%)
HSV / HSBhsv(200.4, 68.1%, 62.7%)
CMYK68.1%, 23.1%, 0%, 37.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,373,984
CSS custom property--colour: #337BA0;

Brightness & contrast

Relative luminance0.17408WCAG 2.x, 0 is black and 1 is white
Perceived brightness112.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 4.69:1
Contrast with white4.69:1WCAG normal text: AA
Contrast with black4.48:1WCAG normal text: Fail
Greyscale equivalent#6E6E6E
Inverted#CC845F

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#697AA2no red cones; affects about 1% of men; ΔE 14.6 from the original
Deuteranopia#5A6F9Fno green cones; the most common form, about 1% of men; ΔE 15.7 from the original
Tritanopia#008587no blue cones; rare, and affects men and women equally; ΔE 25.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text4.69:1WCAG large text: AAA
Contrast with black, large text4.48:1WCAG large text: AA

Named colours

Steel blue · ΔE 9.2Slate grey · ΔE 18.2Light slate grey · ΔE 18.7Cadetblue · ΔE 24.6Teal · ΔE 25.9Dark cyan · ΔE 27
Nearest named CSS colourSteel blue (#4682B4)ΔE 9.22, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A05833
Analogous#33A08E, #3345A0
Triadic#A0337B, #7BA033
Split complementary#A03344, #A08F33
Tetradic#8F33A0, #A05833, #45A033

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B7D7E8
Lighter +30%#90C2DC
Lighter +20%#6AADCF
Lighter +10%#4398C3
Darker −10%#275D79
Darker −20%#1A4053
Darker −30%#0E222C
Darker −40%#020405
More saturated +25%#1983BA
Less saturated −25%#4D7386

Channel breakdown

R51
G123
B160
Red51 (20%)
Green123 (48.2%)
Blue160 (62.7%)
Hue200.37°
Saturation (HSL)51.66%
Lightness41.37%
Dominant channelBlue
Hex per channelR 33 · G 7B · B A0

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Every value on this page was computed from “337ba0” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.