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Colour

#287C87

  • #287C87
  • Cyan
  • Dark
  • Nearest: Teal

#287C87 is a cyan with RGB values 40, 124, 135 and HSL 187°, 54%, 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 Teal.

Colour values

#287C87#287C87
HEX#287C87
RGBrgb(40, 124, 135)
RGB (0–1)0.1569, 0.4863, 0.5294
RGB percentages15.7%, 48.6%, 52.9%
HSLhsl(186.9, 54.3%, 34.3%)
HSV / HSBhsv(186.9, 70.4%, 52.9%)
CMYK70.4%, 8.1%, 0%, 47.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,653,319
CSS custom property--colour: #287C87;

Brightness & contrast

Relative luminance0.16616WCAG 2.x, 0 is black and 1 is white
Perceived brightness107.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 4.86:1
Contrast with white4.86:1WCAG normal text: AA
Contrast with black4.32:1WCAG normal text: Fail
Greyscale equivalent#6B6B6B
Inverted#D78378

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#717788no red cones; affects about 1% of men; ΔE 22.8 from the original
Deuteranopia#636D87no green cones; the most common form, about 1% of men; ΔE 23.6 from the original
Tritanopia#00827Fno blue cones; rare, and affects men and women equally; ΔE 11.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text4.86:1WCAG large text: AAA
Contrast with black, large text4.32:1WCAG large text: AA

Named colours

Teal · ΔE 9.3Dark cyan · ΔE 11.5Cadetblue · ΔE 14.7Slate grey · ΔE 19.6Light slate grey · ΔE 20.5Dark slate grey · ΔE 21.2
Nearest named CSS colourTeal (#008080)ΔE 9.28, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#873328
Analogous#288762, #284D87
Triadic#87287C, #7C8728
Split complementary#87284D, #876228
Tetradic#622887, #873328, #4D8728

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9AD9E1
Lighter +30%#73CAD5
Lighter +20%#4BBBCA
Lighter +10%#34A0AE
Darker −10%#1C5860
Darker −20%#113438
Darker −30%#051011
Darker −40%#000000
More saturated +25%#128D9D
Less saturated −25%#3E6B71

Channel breakdown

R40
G124
B135
Red40 (15.7%)
Green124 (48.6%)
Blue135 (52.9%)
Hue186.95°
Saturation (HSL)54.29%
Lightness34.31%
Dominant channelBlue
Hex per channelR 28 · G 7C · B 87

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Every value on this page was computed from “287c87” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.