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Colour

#1C5B58

  • #1C5B58
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#1C5B58 is a cyan with RGB values 28, 91, 88 and HSL 177°, 53%, 23%. It is a dark colour, so white text on it reaches 7.8:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#1C5B58#1C5B58
HEX#1C5B58
RGBrgb(28, 91, 88)
RGB (0–1)0.1098, 0.3569, 0.3451
RGB percentages11%, 35.7%, 34.5%
HSLhsl(177.1, 52.9%, 23.3%)
HSV / HSBhsv(177.1, 69.2%, 35.7%)
CMYK69.2%, 0%, 3.3%, 64.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,858,392
CSS custom property--colour: #1C5B58;

Brightness & contrast

Relative luminance0.08434WCAG 2.x, 0 is black and 1 is white
Perceived brightness77.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.82:1
Contrast with white7.82:1WCAG normal text: AAA
Contrast with black2.69:1WCAG normal text: Fail
Greyscale equivalent#4D4D4D
Inverted#E3A4A7

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#555658no red cones; affects about 1% of men; ΔE 20.7 from the original
Deuteranopia#4C4F59no green cones; the most common form, about 1% of men; ΔE 21.7 from the original
Tritanopia#005E5Ano blue cones; rare, and affects men and women equally; ΔE 4.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text7.82:1WCAG large text: AAA
Contrast with black, large text2.69:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 9.4Teal · ΔE 16.4Dark cyan · ΔE 20.7Dim grey · ΔE 22.9Slate grey · ΔE 26.4Cadetblue · ΔE 26.5
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 9.4, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#5B1C1F
Analogous#1C5B39, #1C3F5B
Triadic#581C5B, #5B581C
Split complementary#5B1C3F, #5B391C
Tetradic#381C5B, #5B1C1F, #3E5B1C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#70D3CE
Lighter +30%#49C7C1
Lighter +20%#34A9A3
Lighter +10%#28827E
Darker −10%#103432
Darker −20%#040D0D
Darker −30%#000000
Darker −40%#000000
More saturated +25%#0D6A65
Less saturated −25%#2B4C4B

Channel breakdown

R28
G91
B88
Red28 (11%)
Green91 (35.7%)
Blue88 (34.5%)
Hue177.14°
Saturation (HSL)52.94%
Lightness23.33%
Dominant channelGreen
Hex per channelR 1C · G 5B · B 58

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Every value on this page was computed from “1c5b58” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.