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Colour

#01897D

  • #01897D
  • Cyan
  • Dark
  • Nearest: Dark cyan

#01897D is a cyan with RGB values 1, 137, 125 and HSL 175°, 99%, 27%. It is a dark colour, so black text on it reaches 4.9:1 contrast (AA for normal text). The nearest named colour is Dark cyan.

Colour values

#01897D#01897D
HEX#01897D
RGBrgb(1, 137, 125)
RGB (0–1)0.0039, 0.5373, 0.4902
RGB percentages0.4%, 53.7%, 49%
HSLhsl(174.7, 98.6%, 27.1%)
HSV / HSBhsv(174.7, 99.3%, 53.7%)
CMYK99.3%, 0%, 8.8%, 46.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer100,733
CSS custom property--colour: #01897D;

Brightness & contrast

Relative luminance0.19378WCAG 2.x, 0 is black and 1 is white
Perceived brightness113.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.88:1
Contrast with white4.31:1WCAG normal text: Fail
Contrast with black4.88:1WCAG normal text: AA
Greyscale equivalent#6B6B6B
Inverted#FE7682

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#81807Dno red cones; affects about 1% of men; ΔE 34.1 from the original
Deuteranopia#72757Eno green cones; the most common form, about 1% of men; ΔE 34.9 from the original
Tritanopia#008C85no blue cones; rare, and affects men and women equally; ΔE 3.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.31:1WCAG large text: AA
Contrast with black, large text4.88:1WCAG large text: AAA

Named colours

Dark cyan · ΔE 7.4Teal · ΔE 8.4Light seagreen · ΔE 15.6Cadetblue · ΔE 18.2Sea green · ΔE 23.2Medium turquoise · ΔE 26.6
Nearest named CSS colourDark cyan (#008B8B)ΔE 7.44, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#89010D
Analogous#018939, #015189
Triadic#7D0189, #897D01
Split complementary#890151, #893901
Tetradic#390189, #89010D, #518901

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#58FEEF
Lighter +30%#26FDEA
Lighter +20%#02EED9
Lighter +10%#01BCAB
Darker −10%#01564F
Darker −20%#002421
Darker −30%#000000
Darker −40%#000000
More saturated +25%#008A7E
Less saturated −25%#12786F

Channel breakdown

R1
G137
B125
Red1 (0.4%)
Green137 (53.7%)
Blue125 (49%)
Hue174.71°
Saturation (HSL)98.55%
Lightness27.06%
Dominant channelGreen
Hex per channelR 01 · G 89 · B 7D

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Every value on this page was computed from “01897d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.