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Recognised as Colour

#304C4B

  • #304C4B
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#304C4B is a cyan with RGB values 48, 76, 75 and HSL 178°, 23%, 24%. It is a dark colour, so white text on it reaches 9.3:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#304C4B#304C4B
HEX#304C4B
RGBrgb(48, 76, 75)
RGB (0–1)0.1882, 0.298, 0.2941
RGB percentages18.8%, 29.8%, 29.4%
HSLhsl(177.9, 22.6%, 24.3%)
HSV / HSBhsv(177.9, 36.8%, 29.8%)
CMYK36.8%, 0%, 1.3%, 70.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,165,259
CSS custom property--colour: #304C4B;

Brightness & contrast

Relative luminance0.06305WCAG 2.x, 0 is black and 1 is white
Perceived brightness68.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.29:1
Contrast with white9.29:1WCAG normal text: AAA
Contrast with black2.26:1WCAG normal text: Fail
Greyscale equivalent#464646
Inverted#CFB3B4

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#49494Bno red cones; affects about 1% of men; ΔE 11.3 from the original
Deuteranopia#44454Bno green cones; the most common form, about 1% of men; ΔE 11.8 from the original
Tritanopia#264E4Cno blue cones; rare, and affects men and women equally; ΔE 3.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text9.29:1WCAG large text: AAA
Contrast with black, large text2.26:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 1.7Dim grey · ΔE 18.1Slate grey · ΔE 25.5Gray · ΔE 25.9Teal · ΔE 26.2Light slate grey · ΔE 28.4
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 1.74, below the just-noticeable difference
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#4C3031
Analogous#304C3D, #303F4C
Triadic#4B304C, #4C4B30
Split complementary#4C303F, #4C3D30
Tetradic#3D304C, #4C3031, #3F4C30

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8FB9B7
Lighter +30%#70A5A3
Lighter +20%#578B89
Lighter +10%#446B6A
Darker −10%#1C2D2C
Darker −20%#090D0D
Darker −30%#000000
Darker −40%#000000
More saturated +25%#215C59
Less saturated −25%#3E3E3E

Channel breakdown

R48
G76
B75
Red48 (18.8%)
Green76 (29.8%)
Blue75 (29.4%)
Hue177.86°
Saturation (HSL)22.58%
Lightness24.31%
Dominant channelGreen
Hex per channelR 30 · G 4C · B 4B

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Every value on this page was computed from “304c4b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.