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Recognised as Colour

#218E7D

  • #218E7D
  • Cyan
  • Dark
  • Nearest: Dark cyan

#218E7D is a cyan with RGB values 33, 142, 125 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

#218E7D#218E7D
HEX#218E7D
RGBrgb(33, 142, 125)
RGB (0–1)0.1294, 0.5569, 0.4902
RGB percentages12.9%, 55.7%, 49%
HSLhsl(170.6, 62.3%, 34.3%)
HSV / HSBhsv(170.6, 76.8%, 55.7%)
CMYK76.8%, 0%, 12%, 44.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,199,165
CSS custom property--colour: #218E7D;

Brightness & contrast

Relative luminance0.2115WCAG 2.x, 0 is black and 1 is white
Perceived brightness118.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.23:1
Contrast with white4.02:1WCAG normal text: Fail
Contrast with black5.23:1WCAG normal text: AA
Greyscale equivalent#767676
Inverted#DE7182

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#88857Cno red cones; affects about 1% of men; ΔE 33.7 from the original
Deuteranopia#797A7Eno green cones; the most common form, about 1% of men; ΔE 34.4 from the original
Tritanopia#009089no 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 text4.02:1WCAG large text: AA
Contrast with black, large text5.23:1WCAG large text: AAA

Named colours

Dark cyan · ΔE 10.1Teal · ΔE 11.4Light seagreen · ΔE 14.9Cadetblue · ΔE 18.1Sea green · ΔE 20.5Medium aquamarine · ΔE 24.3
Nearest named CSS colourDark cyan (#008B8B)ΔE 10.06, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8E2132
Analogous#218E46, #21698E
Triadic#7D218E, #8E7D21
Split complementary#8E2169, #8E4621
Tetradic#46218E, #8E2132, #698E21

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#95E6DA
Lighter +30%#6BDDCB
Lighter +20%#42D3BC
Lighter +10%#2BB7A1
Darker −10%#176559
Darker −20%#0E3B34
Darker −30%#041210
Darker −40%#000000
More saturated +25%#0BA48C
Less saturated −25%#37786E

Channel breakdown

R33
G142
B125
Red33 (12.9%)
Green142 (55.7%)
Blue125 (49%)
Hue170.64°
Saturation (HSL)62.29%
Lightness34.31%
Dominant channelGreen
Hex per channelR 21 · G 8E · B 7D

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Every value on this page was computed from “218e7d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.