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Recognised as Colour

#288CA1

  • #288CA1
  • Cyan
  • Dark
  • Nearest: Cadetblue

#288CA1 is a cyan with RGB values 40, 140, 161 and HSL 190°, 60%, 39%. It is a dark colour, so black text on it reaches 5.4:1 contrast (AA for normal text). The nearest named colour is Cadetblue.

Colour values

#288CA1#288CA1
HEX#288CA1
RGBrgb(40, 140, 161)
RGB (0–1)0.1569, 0.549, 0.6314
RGB percentages15.7%, 54.9%, 63.1%
HSLhsl(190.4, 60.2%, 39.4%)
HSV / HSBhsv(190.4, 75.2%, 63.1%)
CMYK75.2%, 13%, 0%, 36.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,657,441
CSS custom property--colour: #288CA1;

Brightness & contrast

Relative luminance0.2178WCAG 2.x, 0 is black and 1 is white
Perceived brightness122.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.36:1
Contrast with white3.92:1WCAG normal text: Fail
Contrast with black5.36:1WCAG normal text: AA
Greyscale equivalent#787878
Inverted#D7735E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#7D87A2no red cones; affects about 1% of men; ΔE 23.8 from the original
Deuteranopia#6D7BA1no green cones; the most common form, about 1% of men; ΔE 25.3 from the original
Tritanopia#009493no blue cones; rare, and affects men and women equally; ΔE 15.6 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.92:1WCAG large text: AA
Contrast with black, large text5.36:1WCAG large text: AAA

Named colours

Cadetblue · ΔE 14Dark cyan · ΔE 14.3Teal · ΔE 14.5Light slate grey · ΔE 20.4Slate grey · ΔE 20.7Steel blue · ΔE 21.2
Nearest named CSS colourCadetblue (#5F9EA0)ΔE 14.01, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A13D28
Analogous#28A179, #2850A1
Triadic#A1288C, #8CA128
Split complementary#A12850, #A17A28
Tetradic#7928A1, #A13D28, #50A128

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#ABDFEA
Lighter +30%#82D0E0
Lighter +20%#59C0D6
Lighter +10%#32B0CA
Darker −10%#1E6878
Darker −20%#14454F
Darker −30%#0A2126
Darker −40%#000000
More saturated +25%#0F9CBA
Less saturated −25%#417C88

Channel breakdown

R40
G140
B161
Red40 (15.7%)
Green140 (54.9%)
Blue161 (63.1%)
Hue190.41°
Saturation (HSL)60.2%
Lightness39.41%
Dominant channelBlue
Hex per channelR 28 · G 8C · B A1

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Every value on this page was computed from “288ca1” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.