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Recognised as Colour

#1D312A

  • #1D312A
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#1D312A is a cyan with RGB values 29, 49, 42 and HSL 159°, 26%, 15%. It is a dark colour, so white text on it reaches 13.8:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#1D312A#1D312A
HEX#1D312A
RGBrgb(29, 49, 42)
RGB (0–1)0.1137, 0.1922, 0.1647
RGB percentages11.4%, 19.2%, 16.5%
HSLhsl(159, 25.6%, 15.3%)
HSV / HSBhsv(159, 40.8%, 19.2%)
CMYK40.8%, 0%, 14.3%, 80.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,913,130
CSS custom property--colour: #1D312A;

Brightness & contrast

Relative luminance0.02625WCAG 2.x, 0 is black and 1 is white
Perceived brightness43.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.77:1
Contrast with white13.77:1WCAG normal text: AAA
Contrast with black1.53:1WCAG normal text: Fail
Greyscale equivalent#2C2C2C
Inverted#E2CED5

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#302E2Ano red cones; affects about 1% of men; ΔE 10.1 from the original
Deuteranopia#2C2C2Ano green cones; the most common form, about 1% of men; ΔE 9.6 from the original
Tritanopia#18312Fno blue cones; rare, and affects men and women equally; ΔE 3.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text13.77:1WCAG large text: AAA
Contrast with black, large text1.53:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 14.1Black · ΔE 21.1Dim grey · ΔE 27.9Gray · ΔE 36.6Teal · ΔE 36.7Slate grey · ΔE 37.4
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 14.07, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#311D24
Analogous#1D3120, #1D2E31
Triadic#2A1D31, #312A1D
Split complementary#311D2E, #31201D
Tetradic#201D31, #311D24, #2E311D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#70AA96
Lighter +30%#56917C
Lighter +20%#437161
Lighter +10%#305145
Darker −10%#0A110F
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#133B2D
Less saturated −25%#272727

Channel breakdown

R29
G49
B42
Red29 (11.4%)
Green49 (19.2%)
Blue42 (16.5%)
Hue159°
Saturation (HSL)25.64%
Lightness15.29%
Dominant channelGreen
Hex per channelR 1D · G 31 · B 2A

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Every value on this page was computed from “1d312a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.