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Colour

#018B4D

  • #018B4D
  • Cyan
  • Dark
  • Nearest: Sea green

#018B4D is a cyan with RGB values 1, 139, 77 and HSL 153°, 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

#018B4D#018B4D
HEX#018B4D
RGBrgb(1, 139, 77)
RGB (0–1)0.0039, 0.5451, 0.302
RGB percentages0.4%, 54.5%, 30.2%
HSLhsl(153, 98.6%, 27.5%)
HSV / HSBhsv(153, 99.3%, 54.5%)
CMYK99.3%, 0%, 44.6%, 45.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer101,197
CSS custom property--colour: #018B4D;

Brightness & contrast

Relative luminance0.19008WCAG 2.x, 0 is black and 1 is white
Perceived brightness109.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.8:1
Contrast with white4.37:1WCAG normal text: Fail
Contrast with black4.8:1WCAG normal text: AA
Greyscale equivalent#696969
Inverted#FE74B2

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#8B7E48no red cones; affects about 1% of men; ΔE 44.6 from the original
Deuteranopia#7D7551no green cones; the most common form, about 1% of men; ΔE 44.3 from the original
Tritanopia#00897Cno blue cones; rare, and affects men and women equally; ΔE 29.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.37:1WCAG large text: AA
Contrast with black, large text4.8:1WCAG large text: AAA

Named colours

Sea green · ΔE 8.4Medium seagreen · ΔE 14.6Forest green · ΔE 20.8Dark green · ΔE 23Green · ΔE 26.4Dark olivegreen · ΔE 30
Nearest named CSS colourSea green (#2E8B57)ΔE 8.44, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8B013F
Analogous#018B08, #01848B
Triadic#4D018B, #8B4D01
Split complementary#8B0184, #8B0801
Tetradic#08018B, #8B013F, #848B01

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#5AFEB4
Lighter +30%#28FD9D
Lighter +20%#02F085
Lighter +10%#01BE69
Darker −10%#015831
Darker −20%#002615
Darker −30%#000000
Darker −40%#000000
More saturated +25%#008C4D
Less saturated −25%#127A4B

Channel breakdown

R1
G139
B77
Red1 (0.4%)
Green139 (54.5%)
Blue77 (30.2%)
Hue153.04°
Saturation (HSL)98.57%
Lightness27.45%
Dominant channelGreen
Hex per channelR 01 · G 8B · B 4D

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Every value on this page was computed from “018b4d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.