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Recognised as Colour

#40BBAA

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

#40BBAA is a cyan with RGB values 64, 187, 170 and HSL 172°, 49%, 49%. It is a dark colour, so black text on it reaches 8.9:1 contrast (AAA for normal text). The nearest named colour is Light seagreen.

Colour values

#40BBAA#40BBAA
HEX#40BBAA
RGBrgb(64, 187, 170)
RGB (0–1)0.251, 0.7333, 0.6667
RGB percentages25.1%, 73.3%, 66.7%
HSLhsl(171.7, 49%, 49.2%)
HSV / HSBhsv(171.7, 65.8%, 73.3%)
CMYK65.8%, 0%, 9.1%, 26.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,242,346
CSS custom property--colour: #40BBAA;

Brightness & contrast

Relative luminance0.39533WCAG 2.x, 0 is black and 1 is white
Perceived brightness158.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 8.91:1
Contrast with white2.36:1WCAG normal text: Fail
Contrast with black8.91:1WCAG normal text: AAA
Greyscale equivalent#A0A0A0
Inverted#BF4455

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#B3B0A9no red cones; affects about 1% of men; ΔE 38 from the original
Deuteranopia#A1A3ACno green cones; the most common form, about 1% of men; ΔE 39 from the original
Tritanopia#00BEB6no blue cones; rare, and affects men and women equally; ΔE 6.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.36:1WCAG large text: Fail
Contrast with black, large text8.91:1WCAG large text: AAA

Named colours

Light seagreen · ΔE 6Medium turquoise · ΔE 10.5Medium aquamarine · ΔE 11.7Dark turquoise · ΔE 13.8Turquoise · ΔE 14Dark cyan · ΔE 19.9
Nearest named CSS colourLight seagreen (#20B2AA)ΔE 6.02, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BB4051
Analogous#40BB6D, #408EBB
Triadic#AA40BB, #BBAA40
Split complementary#BB408E, #BB6D40
Tetradic#6D40BB, #BB4051, #8EBB40

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D6F1ED
Lighter +30%#B0E4DD
Lighter +20%#8AD7CC
Lighter +10%#64CABC
Darker −10%#339587
Darker −20%#266F65
Darker −30%#194942
Darker −40%#0C2320
More saturated +25%#21DAC1
Less saturated −25%#5F9C93

Channel breakdown

R64
G187
B170
Red64 (25.1%)
Green187 (73.3%)
Blue170 (66.7%)
Hue171.71°
Saturation (HSL)49%
Lightness49.22%
Dominant channelGreen
Hex per channelR 40 · G BB · B AA

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