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Recognised as Colour

#1D4147

  • #1D4147
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#1D4147 is a cyan with RGB values 29, 65, 71 and HSL 189°, 42%, 20%. It is a dark colour, so white text on it reaches 11.1:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#1D4147#1D4147
HEX#1D4147
RGBrgb(29, 65, 71)
RGB (0–1)0.1137, 0.2549, 0.2784
RGB percentages11.4%, 25.5%, 27.8%
HSLhsl(188.6, 42%, 19.6%)
HSV / HSBhsv(188.6, 59.2%, 27.8%)
CMYK59.2%, 8.5%, 0%, 72.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,917,255
CSS custom property--colour: #1D4147;

Brightness & contrast

Relative luminance0.04497WCAG 2.x, 0 is black and 1 is white
Perceived brightness57.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.06:1
Contrast with white11.06:1WCAG normal text: AAA
Contrast with black1.9:1WCAG normal text: Fail
Greyscale equivalent#3A3A3A
Inverted#E2BEB8

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3C3F47no red cones; affects about 1% of men; ΔE 11.9 from the original
Deuteranopia#353A47no green cones; the most common form, about 1% of men; ΔE 12.3 from the original
Tritanopia#004443no blue cones; rare, and affects men and women equally; ΔE 8.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text11.06:1WCAG large text: AAA
Contrast with black, large text1.9:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 7.2Dim grey · ΔE 23.3Black · ΔE 28.5Slate grey · ΔE 29.1Teal · ΔE 29.2Gray · ΔE 31.3
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 7.2, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#47231D
Analogous#1D4738, #1D2C47
Triadic#471D41, #41471D
Split complementary#471D2C, #47381D
Tetradic#381D47, #47231D, #2C471D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#6DB7C3
Lighter +30%#49A4B4
Lighter +20%#3B838F
Lighter +10%#2C626B
Darker −10%#0E2023
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#104A54
Less saturated −25%#29383B

Channel breakdown

R29
G65
B71
Red29 (11.4%)
Green65 (25.5%)
Blue71 (27.8%)
Hue188.57°
Saturation (HSL)42%
Lightness19.61%
Dominant channelBlue
Hex per channelR 1D · G 41 · B 47

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Every value on this page was computed from “1d4147” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.