Recognised as Colour
#218B71
- #218B71
- Cyan
- Dark
- Nearest: Sea green
#218B71 is a cyan with RGB values 33, 139, 113 and HSL 165°, 62%, 34%. It is a dark colour, so black text on it reaches 5:1 contrast (AA for normal text). The nearest named colour is Sea green.
Colour values
#218B71#218B71
HEX#218B71
RGBrgb(33, 139, 113)
RGB (0–1)0.1294, 0.5451, 0.4431
RGB percentages12.9%, 54.5%, 44.3%
HSLhsl(165.3, 61.6%, 33.7%)
HSV / HSBhsv(165.3, 76.3%, 54.5%)
CMYK76.3%, 0%, 18.7%, 45.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,198,385
CSS custom property--colour: #218B71;
Brightness & contrast
Relative luminance0.19981WCAG 2.x, 0 is black and 1 is white
Perceived brightness114.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5:1
Contrast with white4.2:1WCAG normal text: Fail
Contrast with black5:1WCAG normal text: AA
Greyscale equivalent#737373
Inverted#DE748E
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.2:1WCAG large text: AA
Contrast with black, large text5:1WCAG large text: AAA
Named colours
Hue familycyan
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#8B213B
Analogous#218B3C, #21708B
Triadic#71218B, #8B7121
Split complementary#8B2170, #8B3C21
Tetradic#3C218B, #8B213B, #708B21
Tints, shades & saturation
Channel breakdown
R33
G139
B113
Red33 (12.9%)
Green139 (54.5%)
Blue113 (44.3%)
Hue165.28°
Saturation (HSL)61.63%
Lightness33.73%
Dominant channelGreen
Hex per channelR 21 · G 8B · B 71
Keep nerding
Every link below is a page Nerdulator can generate from what it already knows about this value.
Nerdulate something else
Nothing in mind? Surprise me · today’s page