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Recognised as Colour

#1D5156

  • #1D5156
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#1D5156 is a cyan with RGB values 29, 81, 86 and HSL 185°, 50%, 23%. It is a dark colour, so white text on it reaches 8.9:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#1D5156#1D5156
HEX#1D5156
RGBrgb(29, 81, 86)
RGB (0–1)0.1137, 0.3176, 0.3373
RGB percentages11.4%, 31.8%, 33.7%
HSLhsl(185.3, 49.6%, 22.5%)
HSV / HSBhsv(185.3, 66.3%, 33.7%)
CMYK66.3%, 5.8%, 0%, 66.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,921,366
CSS custom property--colour: #1D5156;

Brightness & contrast

Relative luminance0.06818WCAG 2.x, 0 is black and 1 is white
Perceived brightness70.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.88:1
Contrast with white8.88:1WCAG normal text: AAA
Contrast with black2.36:1WCAG normal text: Fail
Greyscale equivalent#464646
Inverted#E2AEA9

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#4B4E56no red cones; affects about 1% of men; ΔE 16.3 from the original
Deuteranopia#424756no green cones; the most common form, about 1% of men; ΔE 17.1 from the original
Tritanopia#005452no blue cones; rare, and affects men and women equally; ΔE 7.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text8.88:1WCAG large text: AAA
Contrast with black, large text2.36:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 5.6Teal · ΔE 21.6Dim grey · ΔE 21.7Slate grey · ΔE 25.3Dark cyan · ΔE 25.9Light slate grey · ΔE 28
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 5.65, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#56221D
Analogous#1D563F, #1D3456
Triadic#561D51, #51561D
Split complementary#561D34, #563F1D
Tetradic#3F1D56, #56221D, #34561D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#70C7CF
Lighter +30%#4AB7C2
Lighter +20%#3799A2
Lighter +10%#2A757C
Darker −10%#102D30
Darker −20%#03090A
Darker −30%#000000
Darker −40%#000000
More saturated +25%#0F5D64
Less saturated −25%#2B4548

Channel breakdown

R29
G81
B86
Red29 (11.4%)
Green81 (31.8%)
Blue86 (33.7%)
Hue185.26°
Saturation (HSL)49.57%
Lightness22.55%
Dominant channelBlue
Hex per channelR 1D · G 51 · B 56

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Every value on this page was computed from “1d5156” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.