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Colour

#0078AB

  • #0078AB
  • Cyan
  • Dark
  • Nearest: Steel blue

#0078AB is a cyan with RGB values 0, 120, 171 and HSL 198°, 100%, 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

#0078AB#0078AB
HEX#0078AB
RGBrgb(0, 120, 171)
RGB (0–1)0, 0.4706, 0.6706
RGB percentages0%, 47.1%, 67.1%
HSLhsl(197.9, 100%, 33.5%)
HSV / HSBhsv(197.9, 100%, 67.1%)
CMYK100%, 29.8%, 0%, 32.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer30,891
CSS custom property--colour: #0078AB;

Brightness & contrast

Relative luminance0.16373WCAG 2.x, 0 is black and 1 is white
Perceived brightness108.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 4.91:1
Contrast with white4.91:1WCAG normal text: AA
Contrast with black4.27:1WCAG normal text: Fail
Greyscale equivalent#626262
Inverted#FF8754

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5F78ADno red cones; affects about 1% of men; ΔE 15.3 from the original
Deuteranopia#4A6BAAno green cones; the most common form, about 1% of men; ΔE 16.7 from the original
Tritanopia#00858Ano 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 text4.91:1WCAG large text: AAA
Contrast with black, large text4.27:1WCAG large text: AA

Named colours

Steel blue · ΔE 7.6Slate grey · ΔE 25.9Light slate grey · ΔE 26.2Cornflower blue · ΔE 27.5Deep skyblue · ΔE 27.6Cadetblue · ΔE 32.5
Nearest named CSS colourSteel blue (#4682B4)ΔE 7.58, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#AB3300
Analogous#00AB88, #0023AB
Triadic#AB0078, #78AB00
Split complementary#AB0023, #AB8800
Tetradic#8800AB, #AB3300, #22AB00

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#78D7FF
Lighter +30%#45C8FF
Lighter +20%#12B8FF
Lighter +10%#009CDE
Darker −10%#005478
Darker −20%#003045
Darker −30%#000D12
Darker −40%#000000
More saturated +25%#0078AB
Less saturated −25%#156F96

Channel breakdown

R0
G120
B171
Red0 (0%)
Green120 (47.1%)
Blue171 (67.1%)
Hue197.89°
Saturation (HSL)100%
Lightness33.53%
Dominant channelBlue
Hex per channelR 00 · G 78 · B AB

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Every value on this page was computed from “0078ab” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.