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Recognised as Colour

#18887B

  • #18887B
  • Cyan
  • Dark
  • Nearest: Dark cyan

#18887B is a cyan with RGB values 24, 136, 123 and HSL 173°, 70%, 31%. It is a dark colour, so black text on it reaches 4.8:1 contrast (AA for normal text). The nearest named colour is Dark cyan.

Colour values

#18887B#18887B
HEX#18887B
RGBrgb(24, 136, 123)
RGB (0–1)0.0941, 0.5333, 0.4824
RGB percentages9.4%, 53.3%, 48.2%
HSLhsl(173, 70%, 31.4%)
HSV / HSBhsv(173, 82.4%, 53.3%)
CMYK82.4%, 0%, 9.6%, 46.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,607,803
CSS custom property--colour: #18887B;

Brightness & contrast

Relative luminance0.19233WCAG 2.x, 0 is black and 1 is white
Perceived brightness112.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.85:1
Contrast with white4.33:1WCAG normal text: Fail
Contrast with black4.85:1WCAG normal text: AA
Greyscale equivalent#6F6F6F
Inverted#E77784

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#81807Bno red cones; affects about 1% of men; ΔE 32.4 from the original
Deuteranopia#73757Cno green cones; the most common form, about 1% of men; ΔE 33.5 from the original
Tritanopia#008B84no blue cones; rare, and affects men and women equally; ΔE 3.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.33:1WCAG large text: AA
Contrast with black, large text4.85:1WCAG large text: AAA

Named colours

Dark cyan · ΔE 7.8Teal · ΔE 8.4Light seagreen · ΔE 16.3Cadetblue · ΔE 17.5Sea green · ΔE 22.7Medium aquamarine · ΔE 27.2
Nearest named CSS colourDark cyan (#008B8B)ΔE 7.85, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#881825
Analogous#188843, #185D88
Triadic#7B1888, #887B18
Split complementary#88185D, #884318
Tetradic#431888, #881825, #5D8818

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#83E9DD
Lighter +30%#58E1D1
Lighter +20%#2CDAC6
Lighter +10%#20B3A2
Darker −10%#105D54
Darker −20%#09312D
Darker −30%#010605
Darker −40%#000000
More saturated +25%#049C8A
Less saturated −25%#2C746C

Channel breakdown

R24
G136
B123
Red24 (9.4%)
Green136 (53.3%)
Blue123 (48.2%)
Hue173.04°
Saturation (HSL)70%
Lightness31.37%
Dominant channelGreen
Hex per channelR 18 · G 88 · B 7B

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Every value on this page was computed from “18887b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.