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Recognised as Colour

#57B4AC

  • #57B4AC
  • Cyan
  • Dark
  • Nearest: Light seagreen

#57B4AC is a cyan with RGB values 87, 180, 172 and HSL 175°, 38%, 52%. It is a dark colour, so black text on it reaches 8.5:1 contrast (AAA for normal text). The nearest named colour is Light seagreen.

Colour values

#57B4AC#57B4AC
HEX#57B4AC
RGBrgb(87, 180, 172)
RGB (0–1)0.3412, 0.7059, 0.6745
RGB percentages34.1%, 70.6%, 67.5%
HSLhsl(174.8, 38.3%, 52.4%)
HSV / HSBhsv(174.8, 51.7%, 70.6%)
CMYK51.7%, 0%, 4.4%, 29.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,747,884
CSS custom property--colour: #57B4AC;

Brightness & contrast

Relative luminance0.37647WCAG 2.x, 0 is black and 1 is white
Perceived brightness157 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 8.53:1
Contrast with white2.46:1WCAG normal text: Fail
Contrast with black8.53:1WCAG normal text: AAA
Greyscale equivalent#A0A0A0
Inverted#A84B53

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#ACACACno red cones; affects about 1% of men; ΔE 30 from the original
Deuteranopia#9CA0ADno green cones; the most common form, about 1% of men; ΔE 30.9 from the original
Tritanopia#1BB8B1no blue cones; rare, and affects men and women equally; ΔE 9.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.46:1WCAG large text: Fail
Contrast with black, large text8.53:1WCAG large text: AAA

Named colours

Light seagreen · ΔE 8.4Cadetblue · ΔE 12.3Medium turquoise · ΔE 12.7Dark turquoise · ΔE 15.8Dark cyan · ΔE 16.3Medium aquamarine · ΔE 17.4
Nearest named CSS colourLight seagreen (#20B2AA)ΔE 8.44, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B4575F
Analogous#57B47E, #578DB4
Triadic#AC57B4, #B4AC57
Split complementary#B4578D, #B47E57
Tetradic#7E57B4, #B4575F, #8DB457

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E4F3F2
Lighter +30%#C1E3E0
Lighter +20%#9ED3CF
Lighter +10%#7AC4BD
Darker −10%#43958E
Darker −20%#33726D
Darker −30%#234F4B
Darker −40%#132C29
More saturated +25%#39D2C5
Less saturated −25%#759693

Channel breakdown

R87
G180
B172
Red87 (34.1%)
Green180 (70.6%)
Blue172 (67.5%)
Hue174.84°
Saturation (HSL)38.27%
Lightness52.35%
Dominant channelGreen
Hex per channelR 57 · G B4 · B AC

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Every value on this page was computed from “57b4ac” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.