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Recognised as Colour

#218D7E

  • #218D7E
  • Cyan
  • Dark
  • Nearest: Dark cyan

#218D7E is a cyan with RGB values 33, 141, 126 and HSL 172°, 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

#218D7E#218D7E
HEX#218D7E
RGBrgb(33, 141, 126)
RGB (0–1)0.1294, 0.5529, 0.4941
RGB percentages12.9%, 55.3%, 49.4%
HSLhsl(171.7, 62.1%, 34.1%)
HSV / HSBhsv(171.7, 76.6%, 55.3%)
CMYK76.6%, 0%, 10.6%, 44.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,198,910
CSS custom property--colour: #218D7E;

Brightness & contrast

Relative luminance0.20879WCAG 2.x, 0 is black and 1 is white
Perceived brightness117.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.18:1
Contrast with white4.06:1WCAG normal text: Fail
Contrast with black5.18:1WCAG normal text: AA
Greyscale equivalent#757575
Inverted#DE7281

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#86847Dno red cones; affects about 1% of men; ΔE 32.9 from the original
Deuteranopia#787A7Fno green cones; the most common form, about 1% of men; ΔE 33.5 from the original
Tritanopia#009088no blue cones; rare, and affects men and women equally; ΔE 4.6 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.06:1WCAG large text: AA
Contrast with black, large text5.18:1WCAG large text: AAA

Named colours

Dark cyan · ΔE 8.9Teal · ΔE 10.1Light seagreen · ΔE 14.9Cadetblue · ΔE 17.2Sea green · ΔE 21.6Medium aquamarine · ΔE 25.1
Nearest named CSS colourDark cyan (#008B8B)ΔE 8.85, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8D2130
Analogous#218D48, #21668D
Triadic#7E218D, #8D7E21
Split complementary#8D2166, #8D4821
Tetradic#48218D, #8D2130, #668D21

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#94E6DB
Lighter +30%#6BDCCD
Lighter +20%#41D3BE
Lighter +10%#2BB6A3
Darker −10%#176459
Darker −20%#0E3A34
Darker −30%#04110F
Darker −40%#000000
More saturated +25%#0BA38E
Less saturated −25%#37776E

Channel breakdown

R33
G141
B126
Red33 (12.9%)
Green141 (55.3%)
Blue126 (49.4%)
Hue171.67°
Saturation (HSL)62.07%
Lightness34.12%
Dominant channelGreen
Hex per channelR 21 · G 8D · B 7E

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Every value on this page was computed from “218d7e” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.