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Recognised as Colour

#018B5A

  • #018B5A
  • Cyan
  • Dark
  • Nearest: Sea green

#018B5A is a cyan with RGB values 1, 139, 90 and HSL 159°, 99%, 27%. 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

#018B5A#018B5A
HEX#018B5A
RGBrgb(1, 139, 90)
RGB (0–1)0.0039, 0.5451, 0.3529
RGB percentages0.4%, 54.5%, 35.3%
HSLhsl(158.7, 98.6%, 27.5%)
HSV / HSBhsv(158.7, 99.3%, 54.5%)
CMYK99.3%, 0%, 35.3%, 45.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer101,210
CSS custom property--colour: #018B5A;

Brightness & contrast

Relative luminance0.1921WCAG 2.x, 0 is black and 1 is white
Perceived brightness110.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.84:1
Contrast with white4.34:1WCAG normal text: Fail
Contrast with black4.84:1WCAG normal text: AA
Greyscale equivalent#6A6A6A
Inverted#FE74A5

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#897F57no red cones; affects about 1% of men; ΔE 42.1 from the original
Deuteranopia#7B755Dno green cones; the most common form, about 1% of men; ΔE 42.4 from the original
Tritanopia#008A7Eno blue cones; rare, and affects men and women equally; ΔE 22.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.34:1WCAG large text: AA
Contrast with black, large text4.84:1WCAG large text: AAA

Named colours

Sea green · ΔE 5.2Medium seagreen · ΔE 16.4Medium aquamarine · ΔE 27Forest green · ΔE 28.1Dark green · ΔE 28.5Light seagreen · ΔE 28.8
Nearest named CSS colourSea green (#2E8B57)ΔE 5.2, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8B0132
Analogous#018B15, #01778B
Triadic#5A018B, #8B5A01
Split complementary#8B0177, #8B1501
Tetradic#15018B, #8B0132, #778B01

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#5AFEC4
Lighter +30%#28FDB1
Lighter +20%#02F09C
Lighter +10%#01BE7B
Darker −10%#015839
Darker −20%#002618
Darker −30%#000000
Darker −40%#000000
More saturated +25%#008C5A
Less saturated −25%#127A55

Channel breakdown

R1
G139
B90
Red1 (0.4%)
Green139 (54.5%)
Blue90 (35.3%)
Hue158.7°
Saturation (HSL)98.57%
Lightness27.45%
Dominant channelGreen
Hex per channelR 01 · G 8B · B 5A

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Every value on this page was computed from “018b5a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.