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Colour

#218D7C

  • #218D7C
  • Cyan
  • Dark
  • Nearest: Dark cyan

#218D7C is a cyan with RGB values 33, 141, 124 and HSL 171°, 62%, 34%. It is a dark colour, so black text on it reaches 5.2:1 contrast (AA for normal text). The nearest named colour is Dark cyan.

Colour values

#218D7C#218D7C
HEX#218D7C
RGBrgb(33, 141, 124)
RGB (0–1)0.1294, 0.5529, 0.4863
RGB percentages12.9%, 55.3%, 48.6%
HSLhsl(170.6, 62.1%, 34.1%)
HSV / HSBhsv(170.6, 76.6%, 55.3%)
CMYK76.6%, 0%, 12.1%, 44.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,198,908
CSS custom property--colour: #218D7C;

Brightness & contrast

Relative luminance0.20828WCAG 2.x, 0 is black and 1 is white
Perceived brightness117.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.17:1
Contrast with white4.07:1WCAG normal text: Fail
Contrast with black5.17:1WCAG normal text: AA
Greyscale equivalent#757575
Inverted#DE7283

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#87847Bno red cones; affects about 1% of men; ΔE 33.5 from the original
Deuteranopia#787A7Dno green cones; the most common form, about 1% of men; ΔE 33.6 from the original
Tritanopia#008F88no blue cones; rare, and affects men and women equally; ΔE 6.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.07:1WCAG large text: AA
Contrast with black, large text5.17:1WCAG large text: AAA

Named colours

Dark cyan · ΔE 10Teal · ΔE 11.2Light seagreen · ΔE 15.2Cadetblue · ΔE 18.2Sea green · ΔE 20.5Medium aquamarine · ΔE 24.7
Nearest named CSS colourDark cyan (#008B8B)ΔE 10.04, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8D2132
Analogous#218D46, #21688D
Triadic#7C218D, #8D7C21
Split complementary#8D2168, #8D4621
Tetradic#46218D, #8D2132, #688D21

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#94E6D9
Lighter +30%#6BDCCA
Lighter +20%#41D3BC
Lighter +10%#2BB6A0
Darker −10%#176458
Darker −20%#0E3A33
Darker −30%#04110F
Darker −40%#000000
More saturated +25%#0BA38B
Less saturated −25%#37776D

Channel breakdown

R33
G141
B124
Red33 (12.9%)
Green141 (55.3%)
Blue124 (48.6%)
Hue170.56°
Saturation (HSL)62.07%
Lightness34.12%
Dominant channelGreen
Hex per channelR 21 · G 8D · B 7C

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Every value on this page was computed from “218d7c” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.