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Recognised as Colour

#30666F

  • #30666F
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#30666F is a cyan with RGB values 48, 102, 111 and HSL 189°, 40%, 31%. It is a dark colour, so white text on it reaches 6.5:1 contrast (AA for normal text). The nearest named colour is Dark slate grey.

Colour values

#30666F#30666F
HEX#30666F
RGBrgb(48, 102, 111)
RGB (0–1)0.1882, 0.4, 0.4353
RGB percentages18.8%, 40%, 43.5%
HSLhsl(188.6, 39.6%, 31.2%)
HSV / HSBhsv(188.6, 56.8%, 43.5%)
CMYK56.8%, 8.1%, 0%, 56.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,171,951
CSS custom property--colour: #30666F;

Brightness & contrast

Relative luminance0.11279WCAG 2.x, 0 is black and 1 is white
Perceived brightness90.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.45:1
Contrast with white6.45:1WCAG normal text: AA
Contrast with black3.26:1WCAG normal text: Fail
Greyscale equivalent#5B5B5B
Inverted#CF9990

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5E6370no red cones; affects about 1% of men; ΔE 16.4 from the original
Deuteranopia#545B6Fno green cones; the most common form, about 1% of men; ΔE 17.3 from the original
Tritanopia#006A69no blue cones; rare, and affects men and women equally; ΔE 11.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text6.45:1WCAG large text: AAA
Contrast with black, large text3.26:1WCAG large text: AA

Named colours

Dark slate grey · ΔE 11.6Teal · ΔE 16.2Slate grey · ΔE 18.2Dim grey · ΔE 18.9Dark cyan · ΔE 19.8Light slate grey · ΔE 20.4
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 11.6, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#6F3930
Analogous#306F59, #30476F
Triadic#6F3066, #666F30
Split complementary#6F3047, #6F5830
Tetradic#58306F, #6F3930, #476F30

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#98CAD3
Lighter +30%#75B8C3
Lighter +20%#51A6B4
Lighter +10%#3F8793
Darker −10%#21454B
Darker −20%#112528
Darker −30%#020404
Darker −40%#000000
More saturated +25%#1C7483
Less saturated −25%#44585B

Channel breakdown

R48
G102
B111
Red48 (18.8%)
Green102 (40%)
Blue111 (43.5%)
Hue188.57°
Saturation (HSL)39.62%
Lightness31.18%
Dominant channelBlue
Hex per channelR 30 · G 66 · B 6F

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Every value on this page was computed from “30666f” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.