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Recognised as Colour

#40B8C0

  • #40B8C0
  • Cyan
  • Dark
  • Nearest: Light seagreen

#40B8C0 is a cyan with RGB values 64, 184, 192 and HSL 184°, 50%, 50%. It is a dark colour, so black text on it reaches 8.8:1 contrast (AAA for normal text). The nearest named colour is Light seagreen.

Colour values

#40B8C0#40B8C0
HEX#40B8C0
RGBrgb(64, 184, 192)
RGB (0–1)0.251, 0.7216, 0.7529
RGB percentages25.1%, 72.2%, 75.3%
HSLhsl(183.8, 50.4%, 50.2%)
HSV / HSBhsv(183.8, 66.7%, 75.3%)
CMYK66.7%, 4.2%, 0%, 24.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,241,600
CSS custom property--colour: #40B8C0;

Brightness & contrast

Relative luminance0.39177WCAG 2.x, 0 is black and 1 is white
Perceived brightness159.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 8.84:1
Contrast with white2.38:1WCAG normal text: Fail
Contrast with black8.84:1WCAG normal text: AAA
Greyscale equivalent#9F9F9F
Inverted#BF473F

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#AAB0C1no red cones; affects about 1% of men; ΔE 31.9 from the original
Deuteranopia#97A2C1no green cones; the most common form, about 1% of men; ΔE 33.2 from the original
Tritanopia#00BFBAno blue cones; rare, and affects men and women equally; ΔE 11.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.38:1WCAG large text: Fail
Contrast with black, large text8.84:1WCAG large text: AAA

Named colours

Light seagreen · ΔE 10.9Dark turquoise · ΔE 11.8Medium turquoise · ΔE 12.1Cadetblue · ΔE 14.5Dark cyan · ΔE 17.4Sky blue · ΔE 19.9
Nearest named CSS colourLight seagreen (#20B2AA)ΔE 10.94, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#C04840
Analogous#40C088, #4078C0
Triadic#C040B8, #B8C040
Split complementary#C04078, #C08840
Tetradic#8840C0, #C04840, #78C040

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D9F1F3
Lighter +30%#B3E3E6
Lighter +20%#8DD5D9
Lighter +10%#66C6CD
Darker −10%#33949A
Darker −20%#266F74
Darker −30%#1A4A4D
Darker −40%#0D2527
More saturated +25%#20D4E0
Less saturated −25%#609CA0

Channel breakdown

R64
G184
B192
Red64 (25.1%)
Green184 (72.2%)
Blue192 (75.3%)
Hue183.75°
Saturation (HSL)50.39%
Lightness50.2%
Dominant channelBlue
Hex per channelR 40 · G B8 · B C0

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Every value on this page was computed from “40b8c0” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.