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Recognised as Colour

#05171D

  • #05171D
  • Cyan
  • Dark
  • Nearest: Black

#05171D is a cyan with RGB values 5, 23, 29 and HSL 195°, 71%, 7%. It is a dark colour, so white text on it reaches 18.3:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#05171D#05171D
HEX#05171D
RGBrgb(5, 23, 29)
RGB (0–1)0.0196, 0.0902, 0.1137
RGB percentages2%, 9%, 11.4%
HSLhsl(195, 70.6%, 6.7%)
HSV / HSBhsv(195, 82.8%, 11.4%)
CMYK82.8%, 20.7%, 0%, 88.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer333,597
CSS custom property--colour: #05171D;

Brightness & contrast

Relative luminance0.00734WCAG 2.x, 0 is black and 1 is white
Perceived brightness20.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 18.31:1
Contrast with white18.31:1WCAG normal text: AAA
Contrast with black1.15:1WCAG normal text: Fail
Greyscale equivalent#141414
Inverted#FAE8E2

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#13161Dno red cones; affects about 1% of men; ΔE 5.2 from the original
Deuteranopia#10141Dno green cones; the most common form, about 1% of men; ΔE 5.3 from the original
Tritanopia#001919no blue cones; rare, and affects men and women equally; ΔE 5.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text18.31:1WCAG large text: AAA
Contrast with black, large text1.15:1WCAG large text: Fail

Named colours

Black · ΔE 10.2Dark slate grey · ΔE 25.8Dim grey · ΔE 38.6Slate grey · ΔE 46.5Gray · ΔE 47.6Teal · ΔE 48.3
Nearest named CSS colourBlack (#000000)ΔE 10.18, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#1D0B05
Analogous#051D17, #050B1D
Triadic#1D0517, #171D05
Split complementary#1D050B, #1D1705
Tetradic#17051D, #1D0B05, #0B1D05

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#23A1CB
Lighter +30%#1B7FA0
Lighter +20%#145C74
Lighter +10%#0C3A49
Darker −10%#000000
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#011921
Less saturated −25%#091519

Channel breakdown

R5
G23
B29
Red5 (2%)
Green23 (9%)
Blue29 (11.4%)
Hue195°
Saturation (HSL)70.59%
Lightness6.67%
Dominant channelBlue
Hex per channelR 05 · G 17 · B 1D

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Every value on this page was computed from “05171d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.