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Recognised as Colour

#0378AA

  • #0378AA
  • Cyan
  • Dark
  • Nearest: Steel blue

#0378AA is a cyan with RGB values 3, 120, 170 and HSL 198°, 97%, 34%. It is a dark colour, so white text on it reaches 4.9:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#0378AA#0378AA
HEX#0378AA
RGBrgb(3, 120, 170)
RGB (0–1)0.0118, 0.4706, 0.6667
RGB percentages1.2%, 47.1%, 66.7%
HSLhsl(198, 96.5%, 33.9%)
HSV / HSBhsv(198, 98.2%, 66.7%)
CMYK98.2%, 29.4%, 0%, 33.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer227,498
CSS custom property--colour: #0378AA;

Brightness & contrast

Relative luminance0.16355WCAG 2.x, 0 is black and 1 is white
Perceived brightness108.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 4.92:1
Contrast with white4.92:1WCAG normal text: AA
Contrast with black4.27:1WCAG normal text: Fail
Greyscale equivalent#636363
Inverted#FC8755

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5F78ACno red cones; affects about 1% of men; ΔE 15.2 from the original
Deuteranopia#4B6BA9no green cones; the most common form, about 1% of men; ΔE 16.8 from the original
Tritanopia#008589no blue cones; rare, and affects men and women equally; ΔE 30.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.92:1WCAG large text: AAA
Contrast with black, large text4.27:1WCAG large text: AA

Named colours

Steel blue · ΔE 7.6Slate grey · ΔE 25.5Light slate grey · ΔE 25.8Deep skyblue · ΔE 27.7Cornflower blue · ΔE 27.9Cadetblue · ΔE 32
Nearest named CSS colourSteel blue (#4682B4)ΔE 7.59, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#AA3503
Analogous#03AA88, #0325AA
Triadic#AA0378, #78AA03
Split complementary#AA0324, #AA8903
Tetradic#8903AA, #AA3503, #24AA03

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#7CD6FD
Lighter +30%#4AC7FC
Lighter +20%#18B7FB
Lighter +10%#049BDC
Darker −10%#025578
Darker −20%#013146
Darker −30%#000E14
Darker −40%#000000
More saturated +25%#0079AD
Less saturated −25%#196F94

Channel breakdown

R3
G120
B170
Red3 (1.2%)
Green120 (47.1%)
Blue170 (66.7%)
Hue197.96°
Saturation (HSL)96.53%
Lightness33.92%
Dominant channelBlue
Hex per channelR 03 · G 78 · B AA

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Every value on this page was computed from “0378aa” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.