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Recognised as Colour

#1CB18B

  • #1CB18B
  • Cyan
  • Dark
  • Nearest: Medium aquamarine

#1CB18B is a cyan with RGB values 28, 177, 139 and HSL 165°, 73%, 40%. It is a dark colour, so black text on it reaches 7.7:1 contrast (AAA for normal text). The nearest named colour is Medium aquamarine.

Colour values

#1CB18B#1CB18B
HEX#1CB18B
RGBrgb(28, 177, 139)
RGB (0–1)0.1098, 0.6941, 0.5451
RGB percentages11%, 69.4%, 54.5%
HSLhsl(164.7, 72.7%, 40.2%)
HSV / HSBhsv(164.7, 84.2%, 69.4%)
CMYK84.2%, 0%, 21.5%, 30.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,880,459
CSS custom property--colour: #1CB18B;

Brightness & contrast

Relative luminance0.33555WCAG 2.x, 0 is black and 1 is white
Perceived brightness144.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 7.71:1
Contrast with white2.72:1WCAG normal text: Fail
Contrast with black7.71:1WCAG normal text: AAA
Greyscale equivalent#8F8F8F
Inverted#E34E74

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#ACA489no red cones; affects about 1% of men; ΔE 44.7 from the original
Deuteranopia#9A978Eno green cones; the most common form, about 1% of men; ΔE 45.5 from the original
Tritanopia#00B2A6no blue cones; rare, and affects men and women equally; ΔE 14.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.72:1WCAG large text: Fail
Contrast with black, large text7.71:1WCAG large text: AAA

Named colours

Medium aquamarine · ΔE 13.4Medium seagreen · ΔE 15.4Light seagreen · ΔE 17.6Sea green · ΔE 18.1Turquoise · ΔE 21.3Medium turquoise · ΔE 23
Nearest named CSS colourMedium aquamarine (#66CDAA)ΔE 13.42, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B11C42
Analogous#1CB141, #1C8DB1
Triadic#8B1CB1, #B18B1C
Split complementary#B11C8D, #B1411C
Tetradic#401CB1, #B11C42, #8CB11C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A8F1DE
Lighter +30%#7CEACE
Lighter +20%#50E3BE
Lighter +10%#24DCAD
Darker −10%#158568
Darker −20%#0E5946
Darker −30%#072D23
Darker −40%#000101
More saturated +25%#02CB98
Less saturated −25%#36977E

Channel breakdown

R28
G177
B139
Red28 (11%)
Green177 (69.4%)
Blue139 (54.5%)
Hue164.7°
Saturation (HSL)72.68%
Lightness40.2%
Dominant channelGreen
Hex per channelR 1C · G B1 · B 8B

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Every value on this page was computed from “1cb18b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.