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Recognised as Colour

#138A56

  • #138A56
  • Cyan
  • Dark
  • Nearest: Sea green

#138A56 is a cyan with RGB values 19, 138, 86 and HSL 154°, 76%, 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 Sea green.

Colour values

#138A56#138A56
HEX#138A56
RGBrgb(19, 138, 86)
RGB (0–1)0.0745, 0.5412, 0.3373
RGB percentages7.5%, 54.1%, 33.7%
HSLhsl(153.8, 75.8%, 30.8%)
HSV / HSBhsv(153.8, 86.2%, 54.1%)
CMYK86.2%, 0%, 37.7%, 45.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,280,598
CSS custom property--colour: #138A56;

Brightness & contrast

Relative luminance0.18987WCAG 2.x, 0 is black and 1 is white
Perceived brightness110.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.8:1
Contrast with white4.38:1WCAG normal text: Fail
Contrast with black4.8:1WCAG normal text: AA
Greyscale equivalent#6D6D6D
Inverted#EC75A9

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#897E53no red cones; affects about 1% of men; ΔE 41.4 from the original
Deuteranopia#7C7559no green cones; the most common form, about 1% of men; ΔE 41.5 from the original
Tritanopia#00897Dno blue cones; rare, and affects men and women equally; ΔE 23.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.38:1WCAG large text: AA
Contrast with black, large text4.8:1WCAG large text: AAA

Named colours

Sea green · ΔE 3.9Medium seagreen · ΔE 16.1Forest green · ΔE 26.4Dark green · ΔE 26.7Medium aquamarine · ΔE 27.8Dark olivegreen · ΔE 28.3
Nearest named CSS colourSea green (#2E8B57)ΔE 3.89, a close match
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8A1347
Analogous#138A1B, #13828A
Triadic#56138A, #8A5613
Split complementary#8A1382, #8A1B13
Tetradic#1B138A, #8A1347, #828A13

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#7CEDBC
Lighter +30%#4FE7A5
Lighter +20%#22E18D
Lighter +10%#19B772
Darker −10%#0D5D3A
Darker −20%#07301E
Darker −30%#000402
Darker −40%#000000
More saturated +25%#009D58
Less saturated −25%#277654

Channel breakdown

R19
G138
B86
Red19 (7.5%)
Green138 (54.1%)
Blue86 (33.7%)
Hue153.78°
Saturation (HSL)75.8%
Lightness30.78%
Dominant channelGreen
Hex per channelR 13 · G 8A · B 56

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Every value on this page was computed from “138a56” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.