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Recognised as Colour

#18B574

  • #18B574
  • Cyan
  • Dark
  • Nearest: Medium seagreen

#18B574 is a cyan with RGB values 24, 181, 116 and HSL 155°, 77%, 40%. It is a dark colour, so black text on it reaches 7.9:1 contrast (AAA for normal text). The nearest named colour is Medium seagreen.

Colour values

#18B574#18B574
HEX#18B574
RGBrgb(24, 181, 116)
RGB (0–1)0.0941, 0.7098, 0.4549
RGB percentages9.4%, 71%, 45.5%
HSLhsl(155.2, 76.6%, 40.2%)
HSV / HSBhsv(155.2, 86.7%, 71%)
CMYK86.7%, 0%, 35.9%, 29%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,619,316
CSS custom property--colour: #18B574;

Brightness & contrast

Relative luminance0.34503WCAG 2.x, 0 is black and 1 is white
Perceived brightness144.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 7.9:1
Contrast with white2.66:1WCAG normal text: Fail
Contrast with black7.9:1WCAG normal text: AAA
Greyscale equivalent#8F8F8F
Inverted#E74A8B

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#B3A670no red cones; affects about 1% of men; ΔE 50.3 from the original
Deuteranopia#A29A78no green cones; the most common form, about 1% of men; ΔE 50.5 from the original
Tritanopia#00B4A4no blue cones; rare, and affects men and women equally; ΔE 27.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.66:1WCAG large text: Fail
Contrast with black, large text7.9:1WCAG large text: AAA

Named colours

Medium seagreen · ΔE 5.1Sea green · ΔE 19.4Medium aquamarine · ΔE 23Light green · ΔE 26.4Forest green · ΔE 27Medium spring green · ΔE 29.8
Nearest named CSS colourMedium seagreen (#3CB371)ΔE 5.07, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B51859
Analogous#18B525, #18A8B5
Triadic#7418B5, #B57418
Split complementary#B518A8, #B52518
Tetradic#2518B5, #B51859, #A8B518

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A6F3D3
Lighter +30%#79EDBD
Lighter +20%#4CE7A7
Lighter +10%#1FE191
Darker −10%#128857
Darker −20%#0C5B3A
Darker −30%#062E1D
Darker −40%#000101
More saturated +25%#00CD78
Less saturated −25%#329B70

Channel breakdown

R24
G181
B116
Red24 (9.4%)
Green181 (71%)
Blue116 (45.5%)
Hue155.16°
Saturation (HSL)76.59%
Lightness40.2%
Dominant channelGreen
Hex per channelR 18 · G B5 · B 74

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Every value on this page was computed from “18b574” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.